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CoStar Group

csgp · NASDAQ Real Estate
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Employees 1001-5000
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FY2010 Annual Report · CoStar Group
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COSTAR GROUP

2010
 ANNUAL
 REPORT

SHAREHOLDER INFORMATION

Stock Listing

Symbol: CSGP, 

NASDAQ Listed

Independent Auditors

Ernst & Young LLP

8484 Westpark Drive

McLean, VA 22102 

Transfer Agent 

and Registrar

American Stock Transfer &

Trust Company, LLC

6201 15th Avenue

Brooklyn, NY 11219

CORPORATE INFORMATION

Corporate Offi ce

CoStar Group, Inc.

1331 L Street, NW

Washington, DC 20005

1-800-811-4798

www.costar.com

Investor Relations

Brian J. Radecki

Chief Financial Offi cer

(202) 336-6920

Timothy J. Trainor

Communications Director

(202) 336-6975

ABOUT COSTAR

CoStar Group (Nasdaq: CSGP) is commercial real estate’s 

leading provider of information, analytic and marketing 

services. Founded in 1987, CoStar conducts expansive, 

ongoing research to produce and maintain the largest and 

most comprehensive database of commercial real estate 

information. Our suite of online services enables clients to 

analyze, interpret and gain unmatched insight on  

commercial property values, market conditions and current 

availabilities. Headquartered in Washington, DC, CoStar 

maintains offi ces throughout the U.S. and in Europe with a 

staff of approximately 1,500 worldwide, including the 

industry’s largest professional research organization. 

For more information, visit http://www.costar.com.

©2011 CoStar Group, Inc.

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2010 Financial highlights

OperatiOns

Revenues
Net income
Net income per share (diluted)
Weighted average outstanding shares (diluted)

Balance sheet

Cash, cash equivalents and investments
Total assets
Stockholders’ equity

$ IN ThOusANDs, ExCEpT pEr shArE DATA

2006

$158,889
$12,410
$0.65
19,165

2006

$158,148
$275,437
$250,110

2007

$192,805
$15,951
$0.82
19,404

2007

$187,426
$321,843
$281,805

2008

$212,428
$24,623
$1.26
19,550

2008

$224,590
$334,384
$303,421

2009

$209,659
$18,693
$0.94
19,925

2009

$255,698
$404,579
$359,006

2010

$226,260
$13,289
$0.64
20,707

2010

$239,316
$439,648
$381,502

Five Year revenue Growth

comparison oF quarterlY eBitDa + net income

EBITDA

NET INCOME

250

200

150

100

18

16

14

12

10

8

6

4

2

0

2009

2010

‘06

‘07

‘08

‘09

‘10

Q1

Q2

Q3

Q4

Q1

Q2

Q3

Q4

$ IN MIllIONs

$ IN MIllIONs

reconciliation oF quarterlY eBitDa with 2009-2010 quarterlY net income

2009

2010

q1

q2

q3

q4

q1

q2

q3

q4

  $6.1
1.4
2.2
(0.4)
5.1

 $14.4

  $4.6
1.2
2.2 
(0.3)
3.9

 $11.6

  $4.3
1.5
2.1
(0.2)
2.9

 $10.6

  $3.6
1.6
2.3
(0.2)
2.6

  $9.9

  $2.9
1.2
2.4
(0.2)
2.5

  $8.8

  $3.3
0.8
2.5
(0.2)
1.4

  $7.8

  $3.4
0.9
2.4
(0.2)
2.9

  $9.4

  $3.8
0.9
2.5
(0.2)
3.4

 $10.4

Net income 
Purchase amortization
Depreciation and other amortization
Interest income, net
Income tax expense, net

EBITDA

$ IN MIllIONs

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
new cOrpOrate headquarters 
1331 l street, nw, washingtOn, dc

expanding 
boundaries 
of success

Perhaps the single event that had the biggest impact on our business in  
2010 was the notable and welcome improvement in market conditions as 
commercial real estate made a clear transition toward a recovery phase.

cOstar grOup FOunder + ceO

andrew 
florance

Listening to our customers and responding 
to their ever-changing information needs 
have always been the driving forces behind 
CoStar Group’s remarkable success. 
There’s no question that our service will 
continue to grow and evolve to keep pace 
with a commercial real estate industry 
that’s becoming more interconnected  
and sophisticated by the day.

COsTAr GrOup 2010 AnnuAL RepoRT

5

tO Our sharehOlders

As we begin our 24th year, I find it both astounding 
and instructive to look back and consider the 
enormous changes our business has experienced 
since CoStar Group first began providing information 
services to the commercial real estate industry. 

When we first started, “state of the art” meant sending our 
clients listing updates on CD-ROMs. Today, CoStar provides 
the most dynamic and advanced online research and 
analytics platform in the industry. 

There’s no question that our service will continue to  
grow and evolve to keep pace with a commercial real  
estate industry that’s becoming more interconnected  
and sophisticated by the day. 

From our beginning as an innovative start-up providing 
brokers with a more effective and efficient way to market and 
find space in a handful of major U.S. markets, we have grown 
rapidly. Today, we are the largest research organization in 
commercial real estate, with the largest, most complete and 
most accurate database offering thousands more properties, 
transactions, tenants, and sale and lease listings than 
competitive services. 

CoStar is now an essential resource for brokers, as well as 
owners, investors, banks and lenders, appraisers, vendors, 
and government agencies—the full spectrum of commercial 
real estate. Simply stated, CoStar Group is now the leading 
provider of digitized information for one of the largest asset 
classes in the global economy, valued at an estimated  
$11 trillion in the U.S.

Reflecting on these and many other changes serves as 
a powerful reminder that listening to our customers and 
responding to their ever-changing information needs have 
always been the driving forces behind CoStar Group’s 
remarkable success. 

Each year, participants in this massive and data-intensive 
asset class conduct millions of highly valued leasing, sales, 
and financing transactions that require enormous amounts 
of information and analysis.

Our decision to grow CoStar’s business by expanding market 
coverage and producing property-level detail through our 
ongoing research has enabled us to address our subscribers’ 
most critical business information needs and develop a 
highly successful business model. More than ever, we’re 
focused on providing advanced tools and applied research 
that uses CoStar’s digital information resources to speed 
transactions, reduce costs, and manage risks. 

It’s my firm belief that CoStar has succeeded because of  
our innovation and unrelenting pursuit of this goal. 

BOstOn OFFice: 
under One rOOF
Combining PPR, Resolve 
Technology and CoStar under 
one roof in a spectacular, 
full-floor office setting was a 
momentous event, bringing 
together the people and 
resources developing the 
industry’s next generation of 
advanced analytic products and 
risk management resources. 

new YOrk citY OFFice: 
Further expansiOn
The opening of our New York 
office was CoStar’s third major 
office unveiling of the year, after 
Boston and Washington, DC.  
The central location combined 
two offices and provided a 
spacious new venue for  
metro-area business.

total numBer oF inDiviDual suBscriBers

millions oF properties in DataBase

89,000

88,000

87,000

86,000

85,000

84,000

83,000

82,000

81,000

80,000

2009

2010

4.5
4.5

4.0
4.0

3.5
3.5

3.0
3.0

2.5
2.5

2.0
2.0

1.5
1.5

1.0
1.0

0.5
0.5

0
0

 GROWTH IN TOTAL COSTAR SUBSCRIBER SITES PER YEAR

Q1

Q2

Q3

Q4

Q1

Q2

Q3

Q4

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

TOTAl NuMBEr OF INDIVIDuAl COsTAr suBsCrIBErs QuArTErlY

TOTAl NuMBEr OF prOpErTIEs IN COsTAr’s DATABAsE [IN MIllIONs] pEr YEAr

CoStar Group had one of its most successful years in 
2010, with strong organic sales growth, a large increase in 
subscribers, and high customer renewal rates. The strong 
improvements in these key metrics of our business reflected 
the impact of improving market conditions in commercial 
real estate. During 2010, the national office vacancy and 
availability rates began to decline in the U.S. for the first time 
in three years, signaling the onset of market recovery.

In this improving environment, we generated consecutive 
record levels of revenue each quarter during 2010, 
culminating in $58.2 million in revenue in the fourth quarter 
of 2010. For the full year of 2010, CoStar generated $226.3 
million in total revenue, an increase of $16.6 million or 
approximately 8% over 2009. 

We experienced very strong growth in net subscribers across 
multiple product areas and regions, adding more than 2,600 
subscribers during the year. 

There is no stronger indication 
of the overall value and utility 
of CoStar’s services than the 
exceptionally high renewal rates 
we achieved in 2010.

Another important benchmark of success was our ability to 
retain customers and drive usage through the recession and 
into the current recovery. At year-end 2010, the 12-month 
trailing renewal rate for subscription-based services 
exceeded 90%, increasing from approximately 85% in the 
fourth quarter of 2009. This is the highest renewal rate level 
for CoStar since the second quarter of 2008. 

I believe there is no stronger indication of the overall value 
and utility of CoStar’s services than the exceptionally high 
renewal rates we achieved in 2010. Approximately 94% of the 
Company’s total revenue was subscription-based at the end 
of the fourth quarter of 2010. 

COsTAr GrOup 2010 AnnuAL RepoRT

7

We are especially proud of generating strong earnings, totaling 
$13.3 million in net income, during a year in which the industry 
was emerging from one of the worst economic downturns  
in history. 

CoStar closed out the year with an exceptionally strong 
balance sheet. At the end of the fourth quarter of 2010, the 
Company had $239.3 million in cash, cash equivalents, and 
investments on hand, with no long-term debt. Following 
the successful sale and leaseback of our headquarters in 
February 2011, the Company had more than $320 million  
in cash and investments on hand.

Throughout the year, CoStar took advantage of our strong 
financial position to invest in our business ahead of the 
economic recovery. These investments included growing our 
sales force and research organization to capture the revenue 
opportunities expected to accompany increased leasing and 
sales activity. 

Other notable 2010 accomplishments that we believe position  
the Company for future high-margin revenue growth include:

• 

• 

• 

• 

The successful launch of Showcase in the U.K., CoStar’s 
innovative, online lead-generation service, continued to 
expand and capture market share in 2010. With nearly 
12,000 brokers in the U.K. and U.S. using the service to 
market their listings online as of the end of the year,  
Showcase has become one of our fastest-growing services.

The addition of key personnel to our expanded analytics 
service and commencing development of a discounted cash 
flow (DCF) forecasting and valuation solution among other 
applied research products. 

The introduction of the first comprehensive repeat-
sales index for commercial real estate, providing a more 
comprehensive and accurate economic index for analyzing 
sale price movements for commercial property. Drawing on 
what we believe to be the largest and most comprehensive 
comparable sales database in commercial real estate, 
the new CoStar Commercial Repeat Sales Index (CCRSI) 
includes national indices tracking sales of general and 
investment-grade properties, as well as more than two 
dozen sub-indices, taking advantage of the unique breadth 
of CoStar’s property and comparable sales data.

The continued expansion of our proprietary database to 
unprecedented levels. At the end of the fourth quarter of 
2010, CoStar’s research organization tracked more than 3.9 
million properties in the United States, United Kingdom, and 
France, having a total combined size of 75.5 billion rentable 
square feet, an astounding number that serves as the main 
source of value for CoStar in the marketplace.

estaBlishing new FOundatiOns  
FOr lOng term grOwth

cOmmercial real estate  
enters recOverY phase

We purchased an office building at 1331 L Street, NW in 
Washington, DC, in February of 2010 for $41.25 million or $243 
per square foot and relocated our corporate headquarters. One 
year later, we sold the building for a sizable gain and signed 
a long-term lease with the new owner, an affiliate of Munich-
based GLL Real Estate Partners GmbH. 

At a sale price of $596 per square foot, we believe the purchase 
and sale represents the greatest appreciation from a single 
building bought and sold in the United States during the past 
five years.

Our spacious and efficient offices in Washington are 
exceptionally well suited to our work, and the building is fully 
capable of accommodating our growth for years to come. Being 
closer to the center of the Washington region’s transportation 
hub benefits our employees and also improves our ability to 
recruit from the entire Washington metro workforce. 

As an incentive to move our headquarters to Washington, 
DC, the City offered CoStar a generous relocation package 
potentially worth more than $6 million in property tax 
abatements over a 10-year period. 

We also took advantage of sharply lower rental rates 
available in the market to secure long-term leases for 
several of our major offices, including those in London, 
New York, and Boston, where we successfully integrated 
our affiliates Property & Portfolio Research and Resolve 
Technology with our local CoStar team under one roof. 

Q1

Perhaps the single event that had the biggest impact on our 
business in 2010 was the notable and welcome improvement 
in market conditions as commercial real estate made a clear 
transition toward a recovery phase. 

With this important turning point, the national office vacancy 
and availability rates declined for the first time in three 
years. Both office leasing activity and absorption also staged 
impressive come-backs, capped by a very impressive 21 
million square feet of positive net absorption in the fourth 
quarter of 2010. 

While a strong stock market rally and impressive office 
employment growth triggered leasing and sales activity 
during the year, construction levels for all types of 
commercial property remained extremely low. Construction 
began on just one million square feet of office space in the 
entire U.S. in the fourth quarter of 2010. That’s the smallest 
amount of new office construction in decades. 

Given the almost complete shutdown in new supply, and current 
job growth forecasts calling for six million jobs to be created in 
the next two years, the prospects for a faster-than-expected 
recovery in the office market appear strong. In fact, the market 
may be poised for a long and significant growth phase.

Historically, CoStar’s sales growth and renewal rates have 
been closely correlated to two key industry indicators—the 
national vacancy and availability rates. This certainly was 
the case in 2010. We saw a strong and positive impact on our 
business as conditions improved throughout the year.

Year-over-Year chanGe in costar’s investment GraDe repeat sale inDex

0.25

0.15

0.05

-0.05

-0.15

-0.25

-0.35

1 YEAR LATER:
COSTAR SELLS
HQ

FEB. 2010:
COSTAR BUYS
HQ

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

Q1

pErCENT ChANGE IN AVErAGE VAluE

COsTAr GrOup 2010 AnnuAL RepoRT

9

With commercial real estate now clearly at the beginning stages of an 
upward cycle, we believe this is an opportune time to aggressively  
invest in our business.

cOstar superBlY pOsitiOned tO prOvide 
higher-Order inFOrmatiOn services

With commercial real estate now clearly at the beginning 
of an upward cycle, we believe this is an opportune time to 
aggressively invest in our business. In 2011, we intend to 
use our strong cash position to pursue companies in the 
commercial real estate software and information space that 
offer high potential to create significant value for both our 
clients and shareholders. 

As we’ve demonstrated in the past with PPR, Resolve 
Technology, and many other companies, we look for 
acquisitions available at reasonable valuations that offer a 
strong strategic fit. Our goal is to leverage our proprietary 
data and technology by adding innovative products and 
services that have the potential to capture significant market 
share and continue the acceleration of our revenue growth. 

We also plan to invest more aggressively in software 
development, as we see numerous opportunities to drive 
additional revenue and earnings growth by making selective 
upgrades to our U.S. and International product offerings. 
We are taking significant steps to ensure our information 
and analytics operate on multiple platforms and remain an 
essential resource for commercial real estate professionals.

The opportunity we see before us remains vast and still 
largely untapped. We continue to add new users and 
generate sustained revenue growth across all the markets 
we’ve added over the past two decades. We are increasingly 
able to leverage our relatively fixed cost structure over a 
growing subscriber base, while using our data in new and 
more advanced applications to support the key information 
and business needs of our clients. 

Guiding all of our software development is the directive 
to provide these capabilities and integrate our customers’ 
proprietary data with CoStar’s extensive information to yield 
far greater insight and much faster decision-support.

It’s my belief CoStar is superbly positioned to provide 
these higher-order information services, a role that in my 
estimation no other company has the resources, capabilities 
and expertise to accomplish. I am confident that CoStar will 
be one of the innovative information providers that meets the 
growing information needs of an increasingly complex and 
dynamic commercial real estate industry. 

In our view, 2011 will be a year of exceptional innovation 
and growth. I look forward to reporting our progress to you 
throughout the coming year.

Andrew C. Florance 
Founder and Chief Executive Officer 
CoStar Group, Inc.

Developing new and enhanced software and analytic 
capabilities has been and will remain a major focus 
for CoStar’s technology group. CoStar Group CEO,  
Andrew Florance, provided additional insight   
on the company’s technology and software  
development plans.

hOw dOes sOFtware develOpment  
Fit intO cOstar’s grOwth strategY?

We plan to invest more aggressively in software development 
and technology to ensure our information and analytics 
operate on multiple platforms and remain an essential 
resource for commercial real estate professionals. We see 
numerous opportunities to drive additional revenue and 
earnings growth by making selective upgrades to our U.S. 
and International service offerings, and we also have several 
exciting new initiatives in advanced planning stages. These 
initiatives include new, advanced analytical tools for CoStar 
and PPR, as well as developing segment-specific versions  
of our information services. 

For example, we’re developing customized versions of our 
flagship service, CoStar Property, designed to support the 
specialized commercial real estate information needs of specific 
verticals, such as banks, appraisers, and property owners. 

Essentially, we will develop customized interfaces for major 
types of users, moving from a “one-size-fits-all” version of 
our service to versions that more specifically and efficiently 
address the information needs of key market segments. 

I am confident that offering customized versions will lead 
to increased penetration, subscriber growth, and stronger 
usage. We also have a new version of our core product 
in advanced development that will operate in the mobile 
environment, including the Apple iPad™ and likely other 
devices that will enable subscribers to take CoStar  
wherever they go.

We fully recognize the need and importance of constant 
innovation, and believe these investments in our software 
and our business will greatly enhance the utility and overall 
value that CoStar provides our clients.

cOstar ipad applicatiOn cOming in 2011
CoStarGo is a revolutionary new commercial real estate information 
service that will provide mobile users with complete access to their 
property, listing, sales comp, tenant and analytic data. CoStarGo delivers 
information that’s accessible, visual and actionable—from anywhere. 
View current availability, photos and floor plans for a building, scan 
the tenant stack, or tap to access essential building analytics.

COsTAr GrOup 2010 AnnuAL RepoRT

11

ceO questiOn + answer

Technology + 
innoVaTion

where dO YOu see OppOrtunitY  
FOr creating additiOnal value  
in sOFtware develOpment?

what dOes this mean FOr  
the industrY at-large and an  
individual user in particular? 

Currently, our clients extract and analyze data from many 
different sources, from commercially available providers 
such as CoStar, as well as their own proprietary information. 
They then take this information and move it at significant 
expense through different software environments and 
across different technology platforms to accomplish their 
business objectives. 

When you look at the full spectrum of events associated with 
real estate assets, you see that people need information at 
different stages of the cycle. These data events can include 
acquisitions and dispositions, development or redevelopment 
opportunities, financing and asset valuation, leasing space, 
raising equity, portfolio allocation, fund re-investment, and 
many other related activities.

I believe CoStar is exceptionally well positioned to provide 
our clients with more of the vital information streams they 
use in their day-to-day business, and also to provide a more 
effective way to integrate external and internal information 
more seamlessly using smarter, more advanced applications 
to increase efficiency and reduce costs. 

For each new event or stage in the real estate “life cycle,”  
the user essentially starts the process over, rebuilding  
models and researching or updating the information they 
need. Not only is this manual integration effort a hugely  
time-consuming process, it also introduces the opportunity  
for errors. 

Think about how we use information today. Most of us turn to 
a data source to look up or confirm a specific value or analyze 
a specific set of data. You have to initiate the process and 
then take the information and combine or integrate it with 
other pieces of information, and process it into some type of 
output. It’s a very reactive process.

A more fully integrated and completely seamless information 
source can apply analytics and information in ways that make 
the information much more proactive. With that capability, 
our software can provide a trigger that alerts the user to 
a data point, such as a recent change in rental rates or 
vacancy, or reveals a market anomaly that may yield a better 
investment or leasing decision, and provide a way to use 
information more proactively. 

If we can provide more seamless and integrated technology 
that our customers can use to proactively manage and 
update the information processes they use in their day-
to-day businesses, I believe we can produce a 5% or 15% 
increase in efficiency, reduce error rates, and provide more 
accurate results using the information updated each day by 
our research team. In that way, I believe we can offer our 
clients an even more valuable service that will become even 
more integral to their businesses.

cOstar’s new headquarters

efficienT + 
responsible

cOstar’s leed® gOld headquarters
The state-of-the-art, 10-story structure provides a remarkably efficient and functional 
workspace capable of accommodating our Company’s growth for years to come.  
Designed by Smith Group, CoStar’s headquarters is one of the first LEED® Gold Core and  
Shell office buildings in Washington, DC, and one of the few such buildings in the nation. 
CoStar intends to apply for LEED® Platinum certification for its built–    out space.

Building OperatiOn

interiOr Build-Out

100% OF THE BUILDING’S ExPECTED ANNUAL ELECTRICITY CONSUMPTION 
FOR THE NExT TWO YEARS HAS BEEN OFFSET WITH PURCHASED RENEWABLE 
ENERGY CREDITS.

SMART BUILDING SYSTEM (SBS) TECHNOLOGY WILL BE INSTALLED TO 
MONITOR AND MAINTAIN OPERATIONS. SBS USES INTELLIGENT AUTOMATION 
TO ANALYZE ENERGY CONSUMPTION WHILE IMPROVING COMFORT LEVELS. 

A HEAVILY LANDSCAPED GREEN-ROOF GARDEN WILL BE INSTALLED TO 
CAPTURE RAIN RUN-OFF AND MINIMIZE HEAT GAIN.

cOmpanY initiatives

THE HEADqUARTERS BUILDING IS LOCATED WITHIN WALKING DISTANCE OF 
MORE THAN 16 COMMUNITY SERVICES AND WITHIN ONE-qUARTER MILE OF 
THREE METRO (PUBLIC TRANSPORTATION) STATIONS. MORE THAN THREE-
qUARTERS OF COSTAR’S HEADqUARTERS STAFF TAKE ADVANTAGE OF THE 
AREA’S PUBLIC TRANSPORTATION SYSTEM, FREE EMPLOYEE SHUTTLE,  
AND OTHER RESOURCES.

FOUR ELECTRIC-CAR CHARGERS AVAILABLE IN THE COSTAR GROUP 
BUILDING’S GARAGE ENCOURAGE THOSE WHO CONTINUE TO COMMUTE BY 
CAR TO CONVERT FROM GASOLINE TO ELECTRIC-POWERED VEHICLES.

WINDOW LINES ON ALL FOUR SIDES PROVIDE AN ABUNDANCE OF 
NATURAL LIGHT WITHIN THE ExPANSIVE, VIRTUALLY COLUMN-FREE OFFICE 
ENVIRONMENT. DAYLIGHT HARVESTING SENSORS ALLOW LIGHTING POWER 
DENSITY TO BE REDUCED.

FLUORESCENT AND LED LIGHT FIxTURES ARE USED ExCLUSIVELY AND  
THE ExTENSIVE USE OF ROOM OCCUPANCY SENSORS FURTHER REDUCE 
POWER USE.

WORKSTATIONS AND OFFICES ARE GREENGUARD-CERTIFIED FOR INDOOR  
AIR qUALITY.

ExTENSIVE WATER CONSERVATION MEASURES IN OFFICE PANTRIES AND 
RESTROOMS REDUCE TOTAL WATER CONSUMPTION IN ExCESS OF 30% FROM 
THE LEED CI VERSION 3.0 BASELINE.

WHENEVER POSSIBLE, CONSTRUCTION WASTE WILL BE DIVERTED FROM A 
LANDFILL, MATERIALS USED ON THE PROjECT WILL BE REGIONALLY SOURCED 
(MANUFACTURED WITHIN 500 MILES), AND PROjECT MATERIALS WILL 
CONTAIN RECYCLED CONTENT.

COsTAr GrOup 2010 AnnuAL RepoRT

13

lOcated in the heart  
OF the capital
Being closer to the center 
of the Washington region’s 
transportation hub benefits 
our employees, many of  
whom take advantage of  
public transportation, the 
city’s vibrant cultural and 
entertainment amenities.

a center  
OF learning 
Included in the planned build-out 
is a tiered 50-seat auditorium 
that will provide a superb venue 
for live and video-cast lectures. 
The auditorium will be equipped 
with the very latest audio and 
video technology.

a cOmFOrtaBle + 
eFFicient wOrkplace
The new office’s attractive and 
functional design includes  
high-quality lighting, 
temperature controls, and 
extensive day-lighting and 
openness, providing a richer, 
more robust collaborative work 
environment. The open, spacious 
floor plan supports teamwork 
across all departments.

new envirOnmentallY 
FriendlY research 
vehicles
CoStar has added the new 
Chevrolet Volt to its fleet of 
research vehicles, further 
reducing the company’s  
carbon output while  
enhancing its extensive  
field research capabilities.

FOrm

10-K

UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
Washington, DC 20549 

FORM 10-K 

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF 
THE SECURITIES EXCHANGE ACT OF 1934 

For the fiscal year ended December 31, 2010 

Commission file number 0-24531 

CoStar Group, Inc. 
(Exact name of registrant as specified in its charter) 

Delaware 
(State or other jurisdiction of incorporation or organization) 

52-2091509 
(I.R.S. Employer Identification No.) 

1331 L Street, NW 
Washington, DC 20005 
(Address of principal executive offices) (zip code) 

(202) 346-6500 
Registrant’s telephone number, including area code 

(877) 739-0486 
Registrant’s facsimile number, including area code 

Securities registered pursuant to Section 12(b) of the Act: 

Title of Each Class 
Common Stock, $.01 par value 

Name of Each Exchange on Which Registered 
NASDAQ Global Select Market 

Securities registered pursuant to Section 12(g) of the Act: 
None 

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Yes   No  

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes    No  

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act 
of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject 
to such filing requirements of the past 90 days. Yes    No  

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data 
File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or 
for such shorter period that registrant was required to submit and post such files.) Yes    No  

Indicate  by  check  mark  if  disclosure  of  delinquent  filers  pursuant  to  Item  405  of  Regulation  S-K  is  not  contained  herein,  and  will  not  be 
contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this  Form 
10-K or any amendment to this Form 10-K.     

Indicate  by  check  mark  whether  the  registrant  is  a  large  accelerated  filer,  an  accelerated  filer,  a  non-accelerated  filer,  or  a  smaller  reporting 
company.  See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Securities 
Exchange Act of 1934.  

Large accelerated filer   
Non-accelerated filer   

Accelerated filer   
Smaller reporting company   

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes   No   

Based  on  the  closing  price  of  the  common  stock  on  June  30, 2010  on  the  Nasdaq  Stock  Market,  Nasdaq  Global  Select  Market,  the  aggregate 
market value of registrant’s common stock held by non-affiliates of the registrant was approximately $658 million. 

As of February 18, 2011, there were 20,761,799 shares of the registrant’s common stock outstanding. 

DOCUMENTS INCORPORATED BY REFERENCE 

1 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Portions of the registrant’s definitive proxy statement, which is expected to be filed with the Securities and Exchange Commission within 120 

days after the end of the registrant’s fiscal year ended December 31, 2010, are incorporated by reference into Part III of this Report. 

2 

TABLE OF CONTENTS 

COsTAr GrOup 2010 AnnuAL RepoRT

17

PART I 
Item 1. 
Item 1A. 
Item 1B. 
Item 2. 
Item 3. 
Item 4. 

PART II 
Item 5. 

Item 6. 
Item 7. 
Item 7A. 
Item 8. 
Item 9. 
Item 9A. 
Item 9B. 

PART III 
Item 10. 
Item 11. 
Item 12. 

Item 13. 
Item 14. 

PART IV 
Item 15. 

Business .............................................................................................................................................  4 
Risk Factors .......................................................................................................................................  15 
Unresolved Staff Comments..............................................................................................................  22 
Properties ...........................................................................................................................................  22 
Legal Proceedings..............................................................................................................................  23 
[Removed and Reserved]...................................................................................................................  23 

Market for the Registrant’s Common Stock, Related Stockholder Matters and Issuer 

Purchases of Equity Securities .......................................................................................................  24 
Selected Consolidated Financial and Operating Data .......................................................................  26 
Management’s Discussion and Analysis of Financial Condition and Results of Operations............  27 
Quantitative and Qualitative Disclosures about Market Risk............................................................  44 
Financial Statements and Supplementary Data .................................................................................  44 
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure ...........  45 
Controls and Procedures ....................................................................................................................  45 
Other Information ..............................................................................................................................  46 

Directors, Executive Officers and Corporate Governance ................................................................  46 
Executive Compensation ...................................................................................................................  46 
46 
Security Ownership of Certain Beneficial Owners and Management and Related 
Stockholder Matters........................................................................................................................  
Certain Relationships and Related Transactions, and Director Independence ..................................  46 
Principal Accountant Fees and Services............................................................................................  46 

Exhibits and Financial Statement Schedules .....................................................................................  46 
Signatures ..........................................................................................................................................  48 
Index to Exhibits................................................................................................................................  49 
Index to Consolidated Financial Statements......................................................................................  F-1 

3 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 1. 

Business  

PART I 

In  this  report,  the  words  “we,”  “our,”  “us,”  “CoStar”  or  the  “Company”  refer  to  CoStar  Group,  Inc.  and  its 
direct and indirect subsidiaries. This report also refers to our websites, but information contained on those sites is 
not part of this report. 

CoStar Group, Inc., a Delaware corporation, is the number one provider of information, marketing and analytic 
services  to the commercial real estate industry in the United States (U.S.) and United Kingdom (U.K.) based on the 
fact  that  we  offer  the  most  comprehensive  commercial  real  estate  database  available,  have  the  largest  research 
department in the industry, provide more information, marketing and analytic services than any of our competitors 
and  believe  we  generate  more  revenues  than  any  of  our  competitors.  CoStar’s  integrated  suite  of  services  offers 
customers online access to the most comprehensive database of commercial real estate information, which has been 
researched and verified by our team of researchers, currently covering the U.S., as well as London and other parts of 
the U.K. and parts of France. We manage our business geographically in two operating segments; our primary areas 
of measurement and decision-making are the U.S. and International, which includes the U.K. and France. 

Since  our  founding  in  1987,  CoStar’s  strategy  has  been  to  provide  commercial  real  estate  professionals  with 
critical  knowledge  to  explore  and  complete  transactions  by  offering  the  most  comprehensive,  timely  and 
standardized  information  on  U.S.  commercial  real  estate.  As  a  result  of  our  January  2003  acquisition  of  Focus 
Information  Limited  (now,  CoStar  U.K.  Limited),  June  2004  acquisition  of  Scottish  Property  Network,  December 
2006 acquisition of Grecam S.A.S., February 2007 acquisition of Property Investment Exchange Limited, and July 
2009 acquisition of Property and Portfolio Research, Inc. (“PPR”) and its wholly owned U.K. subsidiary, Property 
and Portfolio Research Ltd. (“PPR UK”), we have extended our offering of comprehensive commercial real estate 
information to include London and other parts of the U.K. and parts of France.  Information about CoStar’s revenues 
from, and long-lived assets located in, foreign countries is included in Notes 2 and 11 to our consolidated financial 
statements. CoStar’s revenues, net income, assets and liabilities, broken out by segment are set forth in  Note 11 to 
our consolidated financial statements.  Information about risks associated with our foreign operations is included in 
“Item 7A. Quantitative and Qualitative Disclosures about Market Risk.”   

We deliver our content to our U.S. customers primarily via an integrated suite of online service offerings that 
includes information about space available for lease, comparable sales information, tenant information, information 
about properties for sale, internet marketing services, property information for clients’ websites, information about 
industry  professionals  and  their  business  relationships,  analytic  information,  data  integration,  and  industry  news.  
We also provide market research and analysis for commercial real estate investors and lenders via our PPR service 
offerings,  and  portfolio  and  debt  management  and  reporting  capabilities  through  our  Resolve  Technology,  Inc. 
(“Resolve  Technology”)  service  offerings.  We  have  created  and  are  continually  improving  a  standardized 
information platform where the commercial real estate industry and related businesses can continuously interact and 
easily facilitate transactions due to the efficient exchange of accurate information we supply. 

We have a number of assets that provide a unique foundation for our standardized platform, including the most 
comprehensive proprietary database in the industry; the largest research department in the industry; proprietary data 
collection,  information  management  and  quality  control  systems;  a  large  in-house  product  development  team;  a 
broad suite of web-based information, marketing and analytic services; a large team of analysts and economists and 
a  large  base  of  clients.  Our  database  has  been  developed  and  enhanced  for  more  than  23  years  by  a  research 
department that makes thousands of daily database updates. In addition to our internal efforts to grow the database, 
we have obtained and assimilated over 52 proprietary databases.   

We intend to continue to grow our standardized platform of commercial real estate information, marketing and 
analytic services.  In 2004, we began research for a 21-market U.S. expansion effort.  By the end of the first quarter 
of 2006, we had successfully launched service in each of those 21 markets.  In addition, following our acquisition of 
National Research Bureau in January 2005, we launched  various research  initiatives  as part of our expansion into 
real estate information for retail properties.  We launched the new retail component of our flagship product, CoStar 
Property  Professional,  in  May  2006.  In  July  2006,  we  announced  our  intention  to  commence  actively  researching 
commercial properties in approximately 81 new Core Based Statistical Areas (“CBSAs”) across the U.S. in an effort 
to expand the geographical coverage of our service offerings, including our new retail service. In the fourth quarter 
of 2007, we released our CoStar Property Professional service in the 81 new CBSAs across the U.S.  In 2008,  we 

4 

 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

19

released  CoStar  Showcase,  an  internet  marketing  service  that  provides  commercial  real  estate  professionals  the 
opportunity  to  make  their  listings  accessible  to  all  visitors  to  our  public  websites,  www.CoStar.com  and 
www.showcase.com.  

During  the  second  half  of  2009,  as  part  of  our  strategy  for  providing  subscribers  with  tools  for  conducting 
primary research and analysis on commercial real estate, we expanded subscribers’ capabilities to use our database 
of  research-verified  commercial  property  information  to  conduct  in-depth  analysis  and  generate  online  reports  of 
trends in sales and leasing activity.  Furthermore, in July 2009, we added analytic and market forecasting services to 
our  platform  of  research  and  marketing  services  with  our  acquisition  of  PPR,  and  in  October  2009  we  acquired 
Resolve  Technology’s  business  intelligence  and  portfolio  management  software  used  by  institutional  real  estate 
investment companies.  

We also intend to continue to expand the coverage of our service offerings within our International segment.  In 
December 2006, our U.K. subsidiary, CoStar Limited, acquired Grecam S.A.S., a provider of commercial property 
information and market-level surveys, studies and consulting services, located in Paris, France.  In February 2007, 
CoStar  Limited  also  acquired  Property  Investment  Exchange  Limited,  a  provider  of  commercial  property 
information  and  operator  of  an  online  investment  property  exchange  located  in  London,  England.    Our  July  2009 
acquisition  of  PPR  and  PPR  UK  also  expanded  the  market  research  capabilities  of  our  U.K.  operations.    Further 
information about CoStar’s acquisitions is included in Note 3 to our consolidated financial statements. 

  CoStar intends to integrate its U.K. and French operations more fully with its U.S. operations and eventually to 
introduce a consistent international platform of service offerings.  In 2007, we introduced the “CoStar Group” as the 
brand encompassing our worldwide operations. 

Following  our  acquisitions  of  PPR  and  Resolve  Technology  in  2009,  we  began  integrating  their  respective 
product and service offerings with our own, including the services we have successfully integrated following prior 
acquisitions.    We  believe  that  our  recent  U.S.  and  International  expansion  and  integration  efforts  have  created  a 
platform for long-term growth. 

Our  subscription-based  information  services,  consisting  primarily  of  CoStar  Property  Professional,  CoStar 
Tenant, CoStar COMPS Professional and FOCUS services, currently generate more than 94% of our total revenues. 
CoStar  Property  Professional,  CoStar  Tenant,  and  CoStar  COMPS  Professional  are  generally  sold  as  a  suite  of 
similar services and comprise our primary service offering in our U.S. operating segment.  FOCUS is our primary 
service  offering  in  our  International  operating  segment.  The  majority  of  our  contracts  for  our  subscription-based 
information services typically have a minimum term of one year and renew automatically. Upon renewal, many of 
the  subscription  contract  rates  may  change  in  accordance  with  contract  provisions  or  as  a  result  of  contract 
renegotiations. To encourage clients to use our services regularly, we generally charge a fixed monthly amount for 
our  subscription-based  information  services  rather  than  fees  based  on  actual  system  usage.  Contract  rates  are 
generally based on the number of sites, number of users, organization size, the client’s business focus, geography 
and  the  number  of  services  to  which  a  client  subscribes.  Our  subscription  clients  generally  pay  contract  fees  on  a 
monthly basis, but in some cases may pay us on a quarterly or annual basis.   

Industry Overview  

The market for commercial real estate information and analysis is vast based on the variety, volume and value 
of transactions related to commercial real estate. Each transaction has multiple participants and multiple information 
requirements, and in order to facilitate transactions, industry participants must have extensive, accurate and current 
information  and  analysis.  Members  of  the  commercial  real  estate  and  related  business  community  require  daily 
access to current data such as space availability, properties for sale, rental rates, vacancy rates, tenant movements, 
sales comparables, supply, new construction, absorption rates and other important market developments to carry out 
their  businesses  effectively.  Market  research  (including  historical  and  forecast  conditions)  and  applied  analytics 
have also become instrumental to the success of commercial real estate industry participants operating in the current 
economic  environment.  There  is  a  strong  need  for  an  efficient  marketplace,  where  commercial  real  estate 
professionals  can  exchange  information,  evaluate  opportunities  using  standardized  data  and  interpretive  analyses, 
and interact with each other on a continuous basis. 

5 

 
 
 
 
 
 
 
 
 
A large number of parties involved in the commercial real estate and related business community make use of 

the services we provide in order to obtain information they need to conduct their businesses, including: 

Sales and leasing brokers 
Property owners 
Property managers 

• 
• 
• 
•  Design and construction professionals 
•  Real estate developers 
•  Real estate investment trust managers 
• 
•  Commercial bankers 
•  Mortgage bankers 
•  Mortgage brokers 
•  Retailers 

Investment bankers 

Pension fund managers 

•  Government agencies 
•  Mortgage-backed security issuers 
•  Appraisers 
• 
•  Reporters 
• 
•  Building services vendors 
•  Communications providers 
• 
• 
• 

Insurance companies’ managers 
Institutional advisors 
Investors and asset managers 

Tenant vendors 

The commercial real estate and related business community generally has operated in an inefficient marketplace 
because  of  the  fragmented  approach  to  gathering  and  exchanging  information  within  the  marketplace.  Various 
organizations,  including  hundreds  of  brokerage  firms,  directory  publishers  and  local  research  companies,  collect 
data  on  specific  markets  and  develop  software  to  analyze  the  information  they  have  independently  gathered.  This 
highly fragmented methodology has resulted in duplication of effort in the collection  and analysis of  information, 
excessive  internal  cost  and  the  creation  of  non-standardized  data  containing  varying  degrees  of  accuracy  and 
comprehensiveness, resulting in a formidable information gap. 

The  creation  of  a  standardized  information  platform  for  commercial  real  estate  requires  an  infrastructure 
including a standardized database, accurate and comprehensive research capabilities, experienced analysts, easy to 
use  technology  and  intensive  participant  interaction.  By  combining  our  extensive  database,  approximately  957 
researchers  and outside contractors,  our  experienced  team  of  analysts  and  economists,  technological  expertise and 
broad customer base, we believe that we have created such a platform. 

CoStar’s Comprehensive Database  

CoStar has spent more than 23 years building and acquiring a database of commercial real estate information, 
which  includes  information  on  leasing,  sales,  comparable  sales,  tenants,  and  demand  statistics,  as  well  as  digital 
images. 

As of January 31,  2011, our database of real estate information covered the U.S., London, England and other 

parts of the U.K. and parts of France, and contained: 

•  Approximately 1.5 million sale and lease listings; 
•  Approximately 4.0 million total properties; 
•  Approximately 11.1 billion square feet of sale and lease listings; 
•  Approximately 8.9 million tenants; 
•  Approximately 1.8 million sales transactions valued in the aggregate at approximately $3.7 trillion; 

and 

•  Approximately 11.2 million digital attachments, including building photographs, aerial photographs, 

plat maps and floor plans. 

This highly complex database is comprised of hundreds of data fields, tracking such categories as: 

Location 
Site and zoning information 

• 
• 
•  Building characteristics 
Space availability 
• 
• 
Tax assessments 
•  Ownership 
• 
Sales and lease comparables 
Space requirements 
• 
•  Number of retail stores  

•  Mortgage and deed information 
For-sale information 
• 
Income and expense histories 
• 
Tenant names 
• 
• 
Lease expirations 
•  Contact information 
•  Historical trends 
•  Demographic information 
•  Retail sales per square foot 

6 

 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

21

CoStar Research 

We  have  developed  a  sophisticated  data  collection  organization  utilizing  a  multi-faceted  research  process.  In 
2010, our full time researchers and contractors drove millions of miles, conducted hundreds of thousands of on-site 
building inspections, and conducted millions of interviews of brokers, owners and tenants. 

Research  Department.  As  of  January  31,  2011,  we  had  approximately  957  commercial  real  estate  research 
professionals and outside contractors performing research.  Our research professionals undergo an extensive training 
program  so  that  we  can  maintain  consistent  research  methods  and  processes  throughout  our  research  department. 
Our  researchers  collect  and  analyze  commercial  real  estate  information  through  millions  of  phone  calls,  e-mails, 
internet  updates  and  faxes  each  year,  in  addition  to  field  inspections,  public  records  review,  news  monitoring  and 
direct mail. Each researcher is responsible for maintaining the accuracy and reliability of database information. As 
part  of  their  update  process,  researchers  develop  cooperative  relationships  with  industry  professionals  that  allow 
them to gather useful information. Because of the importance commercial real estate professionals place on our data 
and our prominent position in the industry, many of these professionals routinely take the initiative and proactively 
report available space and transactions to our researchers.   

CoStar has an extensive field research effort that includes physical inspection of properties in order to research 

new markets, find additional inventory, photograph properties and verify existing information.  

CoStar utilizes 144 high-tech field research vehicles in 41 states and the U.K. Of these vehicles, 98 are custom-
designed  energy  efficient  hybrid  cars  that  are  equipped  with  computers,  proprietary  Global  Positioning  System 
tracking  software,  high  resolution  digital  cameras  and  handheld  laser  instruments  to  help  precisely  measure 
buildings,  geo-code  them  and  position  them  on  digital  maps.    Some  of  our  researchers  also  use  custom-designed 
trucks  with  the  same  equipment  as  well  as  pneumatic  masts  that  extend  up  to  an  elevation  of  twenty-five  feet  to 
allow for unobstructed building photographs from “birds-eye” views.  Each CoStar vehicle uses wireless technology 
to  track  and  transmit  field  data.  A  typical  site  inspection  consists  of  photographing  the  building,  measuring  the 
building, geo-coding the building, capturing “For Sale” or “For Lease” sign information, counting parking spaces, 
assessing  property  condition  and  construction,  and  gathering  tenant  information.  Certain  researchers  canvass 
properties, interviewing tenants suite by suite. In addition, many of our field researchers are photographers who take 
photographs of commercial real estate properties to add to CoStar’s database of digital images.   

Data and Image Providers. We license a small portion of our data and images from public record providers and 
third party data sources. Licensing agreements with these entities provide for our use of a variety of commercial real 
estate  information,  including  property  ownership,  tenant  information,  demographic  information,  maps  and  aerial 
photographs,  all  of  which  enhance  various  CoStar  services.  These  license  agreements  generally  grant  us  a  non-
exclusive license to use the data and images in the creation and supplementation of our information, marketing and 
analytic services and include what we believe are standard terms, such as a contract term ranging from one to five 
years, automatic renewal of the contract and fixed periodic license fees or a combination of fixed periodic license 
fees plus additional fees based upon our usage. 

Management  and  Quality  Control  Systems.  Our  research  processes  include  automated  and  non-automated 
controls to ensure the integrity of the data collection process. A large number of automated data quality tests check 
for potential errors, including occupancy date conflicts, available square footage greater than building area, typical 
floor space greater than land area and expired leases. We also monitor changes to critical fields of information to 
ensure  all  information  is  kept  in  compliance  with  our  standard  definitions  and  methodology.  Our  non-automated 
quality control procedures include: 

• 
• 
• 
• 

calling our information sources on recently updated properties to re-verify information; 
performing periodic research audits and field checks to determine if we correctly canvassed buildings; 
providing training and retraining to our research professionals to ensure accurate data compilation; and 
compiling measurable performance metrics for research teams and managers for feedback on data quality. 

Finally, one of the most important and effective quality control measures we rely on is feedback provided by the 

commercial real estate professionals using our data every day. 

7 

 
 
 
 
 
 
 
 
 
 
 
Proprietary Technology 

As of January 31,  2011, CoStar had a staff of  154  product  development,  database  and  network professionals.  
CoStar’s information technology professionals focus on developing new services for our customers and delivering 
research automation tools that improve the quality of our data and increase the efficiency of our research analysts.  

Our  information  technology  team  is  responsible  for  developing  and  maintaining  CoStar  services,  including 
CoStar Property Professional, CoStar COMPS, CoStar Tenant, CoStar Showcase, CoStar Commercial MLS, CoStar 
Connect, FOCUS, SPN, Shopproperty, PPR products and services, and Resolve Portfolio Maximizer and Request.  
In  2008,  CoStar  released  CoStar  Showcase,  an  internet  marketing  service  that  provides  commercial  real  estate 
professionals  the  opportunity  to  make  their  listings  accessible  to  all  visitors  to  our  public  websites, 
www.CoStar.com  and  www.showcase.com.    In  2009,  we  expanded  subscribers’  capabilities  to  use  CoStar’s 
database of research-verified commercial property information to conduct in-depth analysis and generate reports on 
trends in sales and leasing activity online. In 2010, we launched Showcase in the U.K. via www.Showcase.co.uk.  

Our information technology team is responsible for developing the infrastructure necessary to support CoStar’s 
business  processes,  our  comprehensive  database  of  commercial  real  estate  information,  marketing  and  analytic 
services  and  our  extensive  image  library.  The  team  implements  technologies  and  systems  that  introduce  efficient 
workflows and controls that increase the production capacity of our research teams and improve the quality of our 
data.    Over  the  years,  the  team  has  developed  data  collection  and  quality  control  mechanisms  that  we  believe  are 
unique to the commercial real estate industry. The team continues to develop and modify our enterprise information 
management  system  that  integrates  CoStar  sales,  research,  field  research,  customer  support  and  accounting 
information.  We use this system to maintain our commercial real estate research information, manage contacts with 
the commercial real estate community, provide research workflow automation and conduct daily automated quality 
assurance  checks.  In  addition,  our  information  technology  team  has  also  developed  fraud-detection  technology  to 
detect and prevent unauthorized access to our services.  

Our  information  technology  professionals  also  maintain  the  servers  and  network  components  necessary  to 
support CoStar services and research systems.  Our encrypted virtual private network provides remote researchers 
and salespeople secure access to CoStar applications and network resources. CoStar maintains a comprehensive data 
protection  policy  that  provides  for  use  of  encrypted  data  fields  and  off-site  storage  of  all  system  backups,  among 
other protective measures.  CoStar’s services are continually monitored in an effort to ensure our customers fast and 
reliable access.   

Services 

Our  suite  of  information,  marketing  and  analytic  services  is  branded  and  marketed  to  our  customers.  Our 
services  are  derived  from  a  database  of  building-specific  information  and  offer  customers  specialized  tools  for 
accessing,  analyzing  and  using  our  information.  Over  time,  we  expect  to  continue  to  enhance  our  existing 
information,  marketing  and  analytic  services  and  develop  additional  services  that  make  use  of  our  comprehensive 
database to meet the needs of our existing customers as well as potential new categories of customers. 

Our various information, marketing and analytic services are described in detail in the following paragraphs as 

of January 31, 2011: 

CoStar Property Professional®   CoStar Property Professional, or “CoStar Property,” is the Company’s flagship 
service. It provides subscribers a comprehensive inventory of office, industrial, retail and multifamily properties and 
land in markets throughout the U.S., including for-lease and for-sale listings, historical data, building photographs, 
maps and floor plans. Commercial real estate professionals use CoStar Property to identify available space for lease, 
evaluate leasing and sale opportunities, value assets and position properties in the marketplace. Our clients also use 
CoStar Property to analyze market conditions by calculating current vacancy rates, absorption rates or average rental 
rates,  and  forecasting  future  trends  based  on  user  selected  variables.  CoStar  Property  provides  subscribers  with 
powerful map-based search capabilities as well as a user controlled, password protected extranet (or electronic “file 
cabinet”) where brokers may share space surveys and transaction-related documents online, in real time, with team 
members. When used together with CoStar Connect, CoStar Property enables subscribers to share space surveys and 
transaction-related  documents  with  their  clients,  accessed  through  their  corporate  website.  CoStar  Property,  along 
with all of CoStar’s other core information, marketing and analytic services, is delivered solely via the internet.   

8 

 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

23

CoStar  COMPS  Professional® 

  CoStar  COMPS  Professional,  or  “COMPS  Professional,”  provides 
comprehensive  coverage  of  comparable  sales  information  in  the  U.S.  commercial  real  estate  industry.  It  is  the 
industry’s  most  comprehensive  database  of  comparable  sales  transactions  and  is  designed  for  professionals  who 
need to research property comparables, identify market trends, expedite the appraisal process and support property 
valuations.  COMPS  Professional  offers  subscribers  numerous  fields  of  property  information,  access  to  support 
documents  (e.g.,  deeds  of  trust)  for  new  comparables,  demographics  and  the  ability  to  view  for-sale  properties 
alongside sold properties in three formats – plotted on a map, aerial image or in a table. 

CoStar  Tenant®      CoStar  Tenant  is  a  detailed  online  business-to-business  prospecting  and  analytical  tool 
providing  commercial  real  estate  professionals  with  the  most  comprehensive  commercial  real  estate-related  U.S. 
tenant  information  available.  CoStar  Tenant  profiles  tenants  occupying  space  in  commercial  buildings  across  the 
U.S.  and  provides  updates  on  lease  expirations  -  one  of  the  service’s  key  features  -  as  well  as  occupancy  levels, 
growth rates and numerous other facts. Delivering this information via the internet allows users to target prospective 
clients quickly through a searchable database that identifies only those tenants meeting certain criteria. 

CoStar Showcase®   CoStar Showcase offers commercial real estate professionals a simple way to get their for-
sale and for-lease listings in front of a broad internet audience who search on Google, Yahoo, Bing, Showcase.com 
and Costar.com to find commercial properties.  When customers sign up for CoStar Showcase, their listings become 
accessible to visitors to Showcase.com  and Costar.com, who can search those listings for free.  To drive traffic to 
CoStar  Showcase  subscriber  listings,  CoStar  invests  in  Google,  Yahoo  and  Bing  keyword  based  pay-per-click 
advertising to capture the high volume traffic of users actively searching for commercial properties on those search 
engines.   As  part of their CoStar Showcase subscription, subscribers  also receive customized  websites  for  each of 
their  brokers  that  displays  their  bio,  photo,  contact  information  and  updated  listings  that  they  can  use  to  promote 
their services. CoStar Showcase can be purchased as a firm-wide annual subscription by firms who want all of their 
brokers  to  be  able  to  access  the  service,  or  it  can  be  purchased  by  individual  brokers  on  a  month-to-month  basis.  
When  individual  brokers  sign  up  for  CoStar  Showcase,  they  also  receive  access  to  CoStar  Commercial  MLS 
(described below). 

CoStar Property Express®   CoStar Property Express provides access, via an annual subscription, to a “light” or 
scaled down version of CoStar Property. Commercial real estate professionals use CoStar Property Express to look 
up and search for-lease and for-sale listings in CoStar’s comprehensive national database. CoStar Property Express 
provides base building information, photos, floor plans, maps and a limited number of reports.  

CoStar Listings Express®   CoStar Listings Express provides access via an annual subscription to a listings only 
version of CoStar Property Express.  Commercial real estate professionals use CoStar Listings Express to look up 
and  search  for  lease  and  for  sale  listings  in  CoStar’s  comprehensive  national  database.    CoStar  Listings  Express 
provides base building information, photos, floor plans, maps and a limited number of reports on only properties that 
are either for lease or for sale.  CoStar Listings Express does not provide information on fully leased properties, as 
found in CoStar Property Professional and CoStar Property Express. 

CoStar  COMPS  Express®      CoStar  COMPS  Express  provides  users  with  immediate,  subscription  free  access 
with payment by credit card to the CoStar COMPS Professional system on a report-by-report basis. Subscribers also 
use this on-demand service to research comparable sales information outside of their subscription markets. 

CoStar  Connect®      CoStar  Connect  allows  commercial  real  estate  firms  to  license  CoStar’s  technology  and 
information  to  market  their  U.S.  property  listings  on  their  corporate  websites.  Customers  enhance  the  quality  and 
depth  of  their  listing  information  through  access  to  CoStar’s  database  of  content  and  digital  images.  The  service 
automatically  updates  via  the  CoStar  Property  database  and  manages  customers’  online  property  information, 
providing comprehensive listings coverage and significantly reducing the expense of building and maintaining their 
websites’ content and functionality.  

CoStar  Commercial  MLS®      CoStar  Commercial  MLS  is  the  industry’s  most  comprehensive  collection  of 
researched  for  sale  listings.    CoStar  Commercial  MLS  draws  upon  CoStar’s  large  database  of  digital  images  and 
includes  office,  industrial,  multifamily  and  retail  properties,  as  well  as  shopping  centers  and  raw  land.    CoStar 
Commercial  MLS  represents  an  efficient  means  for  sellers  to  market  their  properties  to  a  large  audience  and  for 
buyers to easily identify target properties.   

9 

 
 
 
 
 
 
 
 
 
CoStar  Advertising®      CoStar  Advertising  offers  property  owners  a  highly  targeted  and  cost  effective  way  to 
market  a  space  for  lease  or  a  property  for  sale  directly  to  the  individuals  looking  for  that  type  of  space  through 
interactive  advertising.  Our  advertising  model  is  based  on  varying  levels  of  exposure,  enabling  the  advertiser  to 
target  as  narrowly  or  broadly  as  its  budget  permits.  With  the  CoStar  Advertising  program,  when  the  advertiser’s 
listings appear in a results set, they receive priority positioning and are enhanced  to  stand  out.  The  advertiser can 
also purchase exposure in additional submarkets, or the entire market area so that this ad will appear even when this 
listing would not be returned in a results set. 

CoStar  Professional  Directory®      CoStar  Professional  Directory,  a  service  available  exclusively  to  CoStar 
Property Professional subscribers, provides detailed contact information for approximately 1.4 million commercial 
real  estate  professionals,  including  specific  information  about  an  individual’s  current  and  prior  activities  such  as 
completed  transactions,  current  landlord  representation  assignments,  sublet  listings,  major  tenants  and  owners 
represented  and  local  and  national  affiliations.    Commercial  real  estate  brokers  can  input  their  biographical 
information and credentials and upload their photo to create personal profiles.  Subscribers use CoStar Professional 
Directory  to  network  with  their  peers,  identify  and  evaluate  potential  business  partners,  and  maintain  accurate 
mailing lists of other industry professionals for their direct mail marketing efforts. 

CoStar  Market  Report™      The  CoStar  Market  Report  provides  in-depth  current  and  historical  analytical 
information covering office, industrial and retail properties across the U.S.  Published quarterly, each market report 
includes  details  such  as  absorption  rates,  vacancy  rates,  rental  rates,  average  sales  prices,  capitalization  rates, 
existing  inventory  and  current  construction  activity.  This  data  is  presented  using  standard  definitions  and 
calculations developed by CoStar, and offers real estate professionals critical and unbiased information necessary to 
make  intelligent  commercial  real  estate  decisions.  CoStar  Market  Reports  are  available  to  CoStar  Property 
Professional subscribers at no additional charge. 

Metropolis™      The  Metropolis  service  is  a  single  interface  that  combines  commercial  real  estate  data  from 
multiple  information  providers  into  a  comprehensive  resource.  The  Metropolis  service  allows  a  user  to  input  a 
property address and then view detailed information on that property from multiple information providers, including 
CoStar  services.  This  technology  offers  commercial  real  estate  professionals  a  simple  and  convenient  solution  for 
integrating  a  wealth  of  third  party  information  and  proprietary  data,  and  is  currently  available  for  the  Southern 
California markets. 

PPR®   Our subsidiary PPR, and its U.K. subsidiary, PPR UK, offer products and services designed to meet the 
research needs of commercial real estate investors and lenders. PPR covers metropolitan areas throughout the United 
States, the U.K., and Europe, with offerings including historical and forecast market data and analysis by market and 
property  type,  and  services  including  access  to  PPR’s  analysts,  economists,  and  strategists  to  develop  and  deliver 
custom  research  solutions.    Key  tools  include  analysis  of  underlying  property  data,  assessment  of  current  market 
fundamentals, forecasts of future market performance, and credit default models.   

PPR  Portal™  is  PPR’s  primary  delivery  platform  for  research,  forecasts,  analytics,  and  granular  data 
surrounding a specific address and property type. Information is organized around clearly defined tabs, for ease of 
access. The information is presented in written, table data, graphic, and map formats, and can easily be downloaded 
by  the  user  for  integration  into  their  own  analytical  framework.   PPR’s  Portal  is  used  by  lenders,  investors,  and 
owners to identify and price investment opportunities, manage assets and portfolios, and source and service capital. 

PPR COMPASS™ is PPR’s premier commercial real estate risk management tool. It allows users to calculate 
Probability of Default, Loss Given Default, Expected Loss, and Confidence Interval (of Expected Loss) results for a 
loan  or  a  portfolio.  It  provides  direct  comparisons  of  credit  risk  and  refinance  risk  across  Time,  Market,  Property 
Type,  and  Loan  Structure  for  all  macroeconomic  forecast  scenarios.    COMPASSCRE  is  used  by  lenders,  issuers, 
ratings agencies, and regulators to estimate required loss reserves and economic capital, target lending opportunities, 
set pricing strategy, objectively compare/price loans, more effectively allocate capital, and manage refinance risk. 

Resolve  Portfolio  Maximizer®      Resolve  Portfolio  Maximizer  is  an  industry  leading  real  estate  portfolio 
management software solution. Resolve Portfolio Maximizer allows users to model partnership structures, calculate 
waterfall  distributions  and  fees,  model  and  analyze  debt  obligations,  and  create  multiple  “what  if”  scenarios  for 
alternative investment decisions. 

10 

 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

25

Request™      Request  is  the  first  business  intelligence  software  solution  built  specifically  for  managing 
commercial  real  estate  investments.  Request  helps  users  eliminate  some  of  the  difficulties  of  consolidating  real 
estate  investment  data  from  disparate  sources  and  facilitates  standardization  of  information  presentation  and 
reporting  across  an  organization.  Request  also  provides  a  platform  for  users  to  develop  business  intelligence  and 
reporting capabilities. 

FOCUS™      CoStar’s  U.K.  subsidiary,  CoStar  U.K.  Limited,  offers  several  services;  its  primary  service  is 
FOCUS.  FOCUS  is  a  digital  online  service  offering  information  on  the  U.K.  commercial  real  estate  market.  This 
service seamlessly links data on individual properties and companies across the U.K., including comparable sales, 
available space, requirements, tenants, lease deals, planning information, socio-economics and demographics, credit 
ratings, photos and maps. 

Showcase.co.uk   Showcase.co.uk offers commercial real estate professionals a simple way to get their for-sale 
and for-lease listings in front of a broad internet audience who search on Google, Yahoo, Bing, and Showcase.co.uk 
to  find  commercial  properties.   When  customers  sign  up  for  Showcase.co.uk,  their  listings  become  accessible  to 
visitors to www.Showcase.co.uk and other CoStar URLs who can search those listings for free.  To drive traffic to 
Showcase.co.uk subscriber listings, CoStar UK Limited invests in Google, Yahoo and Bing keyword based pay-per-
click advertising to capture the high volume traffic of users actively searching for commercial properties on those 
search engines.  As part of their Showcase.co.uk subscription, subscribers also receive customized websites for each 
of their brokers that displays their bio, photo, contact information and updated listings that they can use to promote 
their services. Showcase.co.uk is available as a firm-wide annual subscription by firms who want all of their brokers 
to be able to access the service or can be purchased by a single location of a national firm on an annual subscription 
basis.   

SPN™   SPN provides users online access to a comprehensive database of information for properties located in 

Scotland, including available space, comparable sales and lease deals. 

Propex™      Propex  gives  users  access  to  the  commercial  property  investment  market.  It  is  used  by  U.K. 
investment agencies and professional investors and is a secure online exchange through which investment deals may 
be introduced. It is a primary channel for the distribution of live transaction data and property research data in the 
U.K.  investment  market.    Propex  also  provides  private  investors  with  a  gateway  into  the  commercial  property 
investment market. It is a free-access listing website, which provides details of commercial property investments. It 
is used by U.K. agencies to sell investments suitable for the private investor. 

Shopproperty.co.uk™      Shopproperty  is  a  listing  database  of  available  retail  units  across  the  U.K.  on  a  free-
access website.  Shopproperty.co.uk is the only specialist listing website with fully licensed Goad street-trader plans. 

Grecam™   Our French subsidiary, Grecam S.A.S., provides commercial real estate information throughout the 
Paris region through its Observatoire Immobilier D’ Entreprise (“OIE”) service offering.  The OIE service provides 
commercial property availability and transaction information to its subscribers through both an online service and 
market reports. 

Clients 

We draw clients from across the commercial real estate and related business community. Commercial real estate 
brokers have traditionally formed the largest portion of CoStar clients, however, we also provide services to owners, 
landlords, financial institutions, retailers, vendors, appraisers, investment banks, governmental agencies, and other 
parties  involved  in  commercial  real  estate.  The  following  chart  lists  U.S.  and  U.K.  clients  that  are  well  known  or 
have the highest annual subscription fees in each of the various categories, each as of January 31, 2011. 

11 

 
 
 
 
 
 
 
 
 
Brokers 

Lenders, Investment Bankers 

Institutional Advisors, Asset Managers 

  BlackRock 
  Prudential  
  Prudential — U.K. 
  Metropolitan Life 
  ING Clarion Partners 
  Progressive Casualty Insurance Co. 
  USAA Real Estate Company 
  NorthMarq Capital 
  AEW Capital Management LP 
  Manulife Financial  
  Hartford Investment Management Company 

Appraisers, Accountants 

  Integra 
  Deloitte 
  Marvin F. Poer  
  KPMG 
  Thomson Reuters 
  FirstService PGP Valuation 

  Deutsche Bank 
  Wells Fargo 
  JP Morgan Chase Bank 
  Key Bank 
  TD Bank 
  Citibank 
  AEGON USA Realty Advisors, Inc. 
  Bank of America, N.A. 
  East West Bank 
  Q10 Capital LLC 
  GE Capital 

CB Richard Ellis 
CB Richard Ellis — U.K. 
Colliers 
Colliers International UK  — U.K. 
Cushman & Wakefield 
Cushman & Wakefield  — U.K. 
Weichert Commercial Brokerage 
Jones Lang LaSalle 
Jones Lang LaSalle — U.K. 
Grubb & Ellis 
Drivers Jonas Deloitte — U.K. 
King Sturge  — U.K. 
Lambert Smith Hampton — U.K. 
Charles Dunn Company, Inc. 
Marcus & Millichap 
Mohr Partners 
Newmark Knight Frank 
CRESA Partners 
Studley 
Coldwell Banker Commercial NRT 
UGL Services 
NAI Global 
Cassidy Turley  
Binswanger 
Re/Max 
Carter  
USI Real Estate Brokerage Services 
DAUM Commercial Real Estate Services    In-N-Out Burger 
HFF 
U.S. Equities Realty 
Sperry Van Ness 
DTZ — U.K. 
Savills Commercial — U.K. 
Capita Symonds — U.K. 
GVA Grimley — U.K. 
BNP Paribas — U.K. 
Avision Young Commercial Real Estate 

  Starbucks 

  Taco Bell  
  Massage Envy 
  7-Eleven 
  Dollar General Corporation 
  Walgreens 
  Denny’s 
  Rent-A-Center 
  Spencer Gifts LLC 

Owners, Developers 

  Hines 
  LNR Property Corp 
  Shorenstein Company, LLC 
  Tishman Speyer 
  The British Land Company  - UK 
  Industrial Developments International (IDI) 

Retailers 

Government Agencies 

  U.S. General Services Administration 
  County of Los Angeles 
  Internal Revenue Service 
  City of Chicago 
  Cook County Assessor’s Office 
  U.S. Department of Housing and  
  Urban Development 
  Scottish Enterprise — U.K. 
  Federal Reserve Bank of New York 
  Federal Deposit Insurance Corporation 
  Transportation Security Administration 

REITs 

Simon Property Group, Inc. 
Brandywine Realty Trust 
Brookfield Properties 
Boston Properties  
Duke Realty Corporation  
Kimco Realty Corporation 
Vornado/Charles E. Smith 

Property Managers 

  Transwestern Commercial Services 
  Lincoln Property Company 
  PM Realty Group 
  Navisys Group 
  Osprey Management Company 
  Leggat McCall Properties 
  Asset Plus Corporation 

Vendors 

  Turner Construction Company 
  Kastle Systems  
  Comcast Corporation 
  ADT Security 
  Cox Communications, Inc. 
  Time Warner Cable, Inc. 
  Verizon Communications, Inc. 

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COsTAr GrOup 2010 AnnuAL RepoRT

27

For the years ended December 31,  2008,  2009 and 2010, no single client accounted for more than  5% of our 

revenues.  

Sales and Marketing 

As of January 31, 2011, we had 262 sales, marketing and customer support employees, with the majority of our 
direct  sales  force  located  in  field  sales  offices.  Our  sales  teams  are  primarily  located  in  23  field  sales  offices 
throughout the U.S. and in offices located in London, England; Manchester, England; Glasgow, Scotland and Paris, 
France.    Our  inside  sales  team  is  located  in  our  downtown  Washington,  DC.  office.  This  team  prospects  for  new 
clients and performs service demonstrations exclusively by telephone and over the internet to support the direct sales 
force.   

Our  local  offices  typically  serve  as  the  platform  for  our  in-market  sales,  customer  support  and  field  research 
operations for their respective regions. The sales force is responsible for selling to new prospects, training new and 
existing clients, providing ongoing customer support, renewing existing client contracts and identifying cross-selling 
opportunities. In addition, the sales force has primary front line responsibility for customer care. 

Our sales strategy is to aggressively attract new clients, while providing ongoing incentives for existing clients 
to  subscribe  to  additional  services.  We  actively  manage  client  accounts  in  order  to  retain  clients  by  providing 
frequent  service  demonstrations  as  well  as  company-client  contact  and  communication.    We  place  a  premium  on 
training new and existing client personnel on the use of our services so as to promote maximum client utilization and 
satisfaction with our services. Our strategy also involves entering into multi-year, multi-market license agreements 
with our larger clients.   

We  seek  to  make  our  services  essential  to  our  clients’  businesses.  To  encourage  clients  to  use  our  services 
regularly, we generally charge a fixed monthly amount for our subscription-based services rather than fees based on 
actual system usage. Contract rates are generally based on the number of sites, number of users, organization size, 
the  client’s  business  focus,  geography  and  the  number  of  services  to  which  a  client  subscribes.  Our  subscription 
clients generally pay contract fees on a monthly basis, but in some cases may pay us on a quarterly or annual basis.   

Our customer service and support staff is charged with ensuring high client satisfaction by providing ongoing 

customer support.  

Our  primary  marketing  methods  include:  service  demonstrations;  face  to  face  networking;  web-based 
marketing;  direct  marketing;  communication  via  our  corporate  website  and  news  services;  participation  in  trade 
show and industry events; print advertising in trade magazines and other business publications; client referrals; and 
CoStar Advisor™, the Company’s newsletter, which is distributed to our clients and prospects. We currently offer 
dozens of webinars each year aimed at helping customers learn more about the commercial real estate industry and 
how to use our services.  The webinars are available both as live presentations and as on-demand programs hosted 
on  our  website.    On  a  monthly  basis,  we  issue  the  CoStar  Commercial  Repeat  Sales  Index  (CCRSI),  a 
comprehensive  set  of  benchmarks  that  investors  and  other  market  participants  can  use  to  better  understand 
commercial  real  estate  price  movements.   The  Index  is  produced  using  our  underlying  data  and  is  publicly 
distributed by CoStar through the news media and made available online at www.costar.com/ccrsi. 

Web-based marketing and direct marketing are the most cost-effective means for us to find prospective clients. 
Our  web-based  marketing  efforts  include  paid  advertising  with  major  search  engines  and  commercial  real  estate 
news sites and our direct marketing efforts include direct mail, email and telemarketing, and make extensive use of 
our unique, proprietary database. Once we have identified a prospective client, our most effective sales method is a 
service  demonstration.  We  use  various  forms  of  advertising  to  build  brand  identity  and  reinforce  the  value  and 
benefits  of  our  services.  We  also  sponsor  and  attend  local  association  activities  and  events,  including  industry-
leading  events  for  commercial  brokers  and  retail  and  financial  services  institutions,  and  attend  and/or  exhibit  at 
industry trade shows and conferences to reinforce our relationships with our core user groups. 

Competition 

The market for information, marketing and analytic services generally is competitive and rapidly changing. In 
the  commercial  real  estate  industry,  the  principal  competitive  factors  for  commercial  real  estate  information, 
marketing and analytic services and providers are: 

13 

 
 
 
 
 
 
 
 
 
 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 

quality and depth of the underlying databases;  
ease of use, flexibility, and functionality of the software;  
timeliness of the data;  
breadth of geographic coverage and services offered;  
client service and support;  
perception that the service offered is the industry standard;  
price;  
effectiveness of marketing and sales efforts;  
proprietary nature of methodologies, databases and technical resources; 
vendor reputation;  
brand loyalty among customers; and  
capital resources.  

We compete directly and indirectly for customers with the following categories of companies: 

• 

• 

• 

• 

• 

• 

online  services  or  websites  targeted  to  commercial  real  estate  brokers,  buyers  and  sellers  of  commercial 
real  estate  properties,  insurance  companies,  mortgage  brokers  and  lenders,  such  as  LoopNet,  Inc., 
Cityfeet.com, 
Information  Limited,  officespace.com,  MrOfficeSpace.com, 
TenantWise, Inc., WorkplaceIQ, RealPoint LLC and RealUp; 

Inc.,  Reed  Business 

publishers  and  distributors  of  information,  marketing  and  analytic  services,  including  regional  providers 
and national print publications, such as Black’s Guide, CBRE Economic Advisors, Marshall & Swift, Yale 
Robbins, Inc., Reis, Inc., Real Capital Analytics, Inc. and The Smith Guide, Inc.; 

locally controlled real estate boards, exchanges or associations sponsoring property listing services and the 
companies  with  whom  they  partner,  such  as  Xceligent,  Catalyst,  the  National  Association  of  Realtors, 
CCIM Institute, Society of Industrial and Office Realtors (SIOR) the Commercial Association of Realtors 
Data Services and the Association of Industrial Realtors (AIR); 

real  estate  portfolio  management  software  solutions,  such  as  Cougar  Software,  Yardi  Systems,  MRI 
Software, Argus Software and Intuit Inc.; 

in-house research departments operated by commercial real estate brokers; and 

public record providers.  

As  the  commercial  real  estate  information,  marketing  and  analytic  services  marketplace  develops,  additional 
competitors  (including  companies  which  could  have  greater  access  to  data,  financial,  product  development, 
technical,  analytic  or  marketing  resources  than  we  do)  may  enter  the  market  and  competition  may  intensify.  A 
company  like  Bloomberg  L.P.  has  the  resources  and  has  previously  announced  an  intention  to  move  into  the 
commercial  real  estate  information  business.    Further,  a  company  like  Google,  which  has  a  far-reaching  web 
presence and substantial data aggregation capabilities, could easily enter the commercial real estate marketing arena. 
While  we  believe  that  we  have  successfully  differentiated  ourselves  from  existing  competitors,  current  or  future 
competitors could materially harm our business. 

Proprietary Rights  

To  protect  our  proprietary  rights  in  our  methodologies,  database,  software,  trademarks  and  other  intellectual 

property, we depend upon a combination of: 

• 
• 
• 
• 
• 

trade secret, copyright, trademark, database protection and other laws;  
nondisclosure, noncompetition and other contractual provisions with employees and consultants;  
license agreements with customers;  
patent protection; and  
technical measures.  

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29

We  seek  to  protect  our  software’s  source  code,  our  database  and  our  photography  as  trade  secrets  and  under 
copyright  law.  Although  copyright  registration  is  not  a  prerequisite  for  copyright  protection,  we  have  filed  for 
copyright  registration  for  many  of  our  databases,  photographs,  software  and  other  materials.  Under  current  U.S. 
copyright  law,  the  arrangement  and  selection  of  data  may  be  protected,  but  the  actual  data  itself  may  not  be.  In 
addition, with respect to our U.K. databases, certain database protection laws provide additional protections of these 
databases.  We  license  our  services  under  license  agreements  that  grant  our  clients  non-exclusive,  non-transferable 
licenses.  These  agreements  restrict  the  disclosure  and  use  of  our  information  and  prohibit  the  unauthorized 
reproduction or transfer of the information, marketing and analytic services we license. 

We  also  attempt  to  protect  the  secrecy  of  our  proprietary  database,  our  trade  secrets  and  our  proprietary 
information  through  confidentiality  and  noncompetition  agreements  with  our  employees  and  consultants.  Our 
services also include technical measures designed to discourage and detect unauthorized copying of our intellectual 
property.  We  have  established  an  internal  antipiracy  team  that  uses  fraud-detection  technology  to  continually 
monitor our services to detect and prevent unauthorized access, and we actively prosecute individuals and firms that 
engage in this unlawful activity. 

We have filed trademark applications to register trademarks for a variety of names for CoStar services and other 
marks, and have obtained registered trademarks for a variety of our marks, including “CoStar,” “COMPS,” “CoStar 
Property,” “CoStar Tenant,” “CoStar Showcase” and “CoStar Group.” Depending upon the jurisdiction, trademarks 
are  generally  valid  as  long  as  they  are  in  use  and/or  their  registrations  are  properly  maintained  and  they  have  not 
been  found  to  become  generic.    We  consider  our  trademarks  in  the  aggregate  to  constitute  a  valuable  asset.    In 
addition, we have filed several patent applications covering certain of our methodologies and software and currently 
have  one  patent  in  the  U.K.  which  expires  in  2021  covering,  among  other  things,  certain  of  our  field  research 
methodologies, and six patents in the U.S. which expire in 2020, 2021, 2022, 2023 (2 patents) and 2025, covering, 
among  other  things,  critical  elements  of  CoStar’s  proprietary  field  research  technology  and  mapping  tools.    We 
regard  the  rights  under  our  patents  as  valuable  to  our  business  but  do  not  believe  that  our  business  is  materially 
dependent on any single patent.  

Employees 

As  of  January  31,  2011,  we  employed  1,389  employees.  None  of  our  employees  are  represented  by  a  labor 

union. We have experienced no work stoppages. We believe that our employee relations are excellent. 

Available Information 

Our  investor  relations  internet  website  is  http://www.costar.com/investors.aspx.  The  reports  we  file  with  or 
furnish  to  the  Securities  and  Exchange  Commission,  including  our  annual  report,  quarterly  reports  and  current 
reports, are available free of charge on our internet website as soon as reasonably practicable after we electronically 
file such material with, or furnish it to, the Securities and Exchange Commission. You may review and copy any of 
the information we file with the Securities and Exchange Commission at the Commission's Public Reference Room 
at  100  F  Street,  NE,  Washington,  DC  20549.  You  may  obtain  information  regarding  the  operation  of  the  Public 
Reference Room by calling the SEC at 1-800-SEC-0330.  The Securities and Exchange Commission maintains an 
internet site that contains reports, proxy and information statements, and other information regarding issuers that file 
electronically with the Commission at http://www.sec.gov. 

Item 1A. 

Risk Factors 

Cautionary Statement Concerning Forward-Looking Statements 

We  have  made  forward-looking  statements  in  this  Report  and  make  forward-looking  statements  in  our  press 
releases  and  conference  calls  that  are  subject  to  risks  and  uncertainties.  Forward-looking  statements  include 
information  that  is  not  purely  historic  fact  and  include,  without  limitation,  statements  concerning  our  financial 
outlook for 2011  and beyond, our possible or assumed future results of operations generally, and other statements 
and information regarding assumptions about our revenues, EBITDA, fully diluted net income, taxable income, cash 
flow from operating activities, available cash, operating costs, amortization expense, intangible asset recovery, net 
income per share, diluted net income per share, weighted-average outstanding shares, capital and other expenditures, 
effective  tax  rate,  equity  compensation  charges,  future  taxable  income,  purchase  amortization,  financing  plans, 
geographic  expansion,  acquisitions,  contract  renewal  rate,  capital  structure,  contractual  obligations,  legal 

15 

 
 
 
 
 
 
 
 
 
proceedings and claims, our database, database growth, services and facilities, employee relations, future economic 
performance, our ability to liquidate or realize our long-term investments, management’s plans, goals and objectives 
for future operations, and growth and markets for our stock. Sections of this Report which contain forward-looking 
statements include “Business,” “Risk Factors,” “Properties,” “Legal Proceedings,” “Management’s Discussion and 
Analysis  of  Financial  Condition  and  Results  of  Operations,”  “Quantitative  and  Qualitative  Disclosures  About 
Market Risk,” “Controls and Procedures” and the Financial Statements and related Notes. 

Our  forward-looking  statements  are  also  identified  by  words  such  as  “believes,”  “expects,”  “thinks,” 
“anticipates,”  “intends,”  “estimates”  or  similar  expressions.  You  should  understand  that  these  forward-looking 
statements  are  estimates  reflecting  our  judgment,  beliefs  and  expectations,  not  guarantees  of  future  performance. 
They  are  subject  to  a  number  of  assumptions,  risks  and  uncertainties  that  could  cause  actual  results  to  differ 
materially from those expressed or implied in the forward-looking statements. The following important factors, in 
addition  to  those  discussed  or  referred  to  under  the  heading  “Risk  Factors,”  and  other  unforeseen  events  or 
circumstances,  could  affect  our  future  results  and  could  cause  those  results  or  other  outcomes  to  differ  materially 
from  those  expressed  or  implied  in  our  forward-looking  statements:  commercial  real  estate  market  conditions; 
general  economic  conditions;  changes  or  consolidations  within  the  commercial  real  estate  industry;  customer 
retention;  our  ability  to  attract  new  clients;  our  ability  to  sell  additional  services  to  existing  clients;  our  ability  to 
integrate  our  U.S.  and  international  product  offerings;  competition;  foreign  currency  fluctuations;  our  ability  to 
identify,  acquire  and  integrate  acquisition  candidates;  our  ability  to  obtain  any  required  financing  on  favorable 
terms;  global  credit  market  conditions  affecting  investments;  our  ability  to  continue  to  expand  successfully;  our 
ability to effectively penetrate the market for retail real estate information and gain acceptance in that market; our 
ability to control costs; litigation; changes in accounting policies or practices; release of new and upgraded services 
by us or our competitors; data quality; development of our sales force; employee retention; technical problems with 
our  services;  managerial  execution;  changes  in  relationships  with  real  estate  brokers  and  other  strategic  partners; 
legal and regulatory issues; and successful adoption of and training on our services. 

Accordingly, you should not place undue reliance on forward-looking statements, which speak only as of, and 
are based on information available to us on, the date of this Report. All subsequent written and oral forward-looking 
statements  attributable  to  us  or  any  person  acting  on  our  behalf  are  expressly  qualified  in  their  entirety  by  the 
cautionary statements contained or referred to in this section. We do not undertake any obligation to update any such 
statements or release publicly any revisions to these forward-looking statements to reflect events or circumstances 
after the date of this Report or to reflect the occurrence of unanticipated events. 

Risk Factors 

A  downturn  or  consolidation  in  the  commercial  real  estate  industry  may  decrease  customer  demand  for  our 
services. A reversal of recent improvements in the commercial real estate industry’s leasing activity and absorption 
rates or a renewed downturn in the commercial real estate market may affect our ability to generate revenues  and 
may lead to more cancellations by our current or future customers, either of which could cause our revenues or our 
revenue  growth  rate  to  decline  and  reduce  our  profitability.  A  depressed  commercial  real  estate  market  has  a 
negative  impact  on  our  core  customer  base,  which  could  decrease  demand  for  our  information,  marketing  and 
analytic  services.  Also,  companies  in  this  industry  are  consolidating,  often  in  order  to  reduce  expenses. 
Consolidation, or other cost-cutting measures by our customers, may lead to more cancellations of our information, 
marketing and analytic services by our customers, reduce the number of our existing clients, reduce the size of our 
target market or increase our clients’ bargaining power, all of which could cause our revenues to decline and reduce 
our profitability. 

Negative general economic conditions could increase our expenses and reduce our revenues. Our business and 
the commercial real estate industry are particularly affected by negative trends in the general economy. The success 
of  our  business  depends  on  a  number  of  factors  relating  to  general  global,  national,  regional  and  local  economic 
conditions,  including  perceived  and  actual  economic  conditions,  recessions,  inflation,  deflation,  exchange  rates, 
interest  rates,  taxation  policies,  availability  of  credit,  employment  levels,  and  wage  and  salary  levels.  Negative 
general economic conditions could adversely affect our business by reducing our revenues and profitability.  If we 
experience  greater  cancellations  or  reductions  of  services  and  failures  to  timely  pay,  and  we  do  not  acquire  new 
clients  or  sell  new  services  to  our  existing  clients,  our  revenues  may  decline  and  our  financial  position  would  be 
adversely  affected.    Adverse  national  and  global  economic  events,  as  well  as  any  significant  terrorist  attack,  are 
likely  to  have  a  dampening  effect  on  the  economy  in  general,  which  could  negatively  affect  our  financial 
performance and our stock price. Market disruptions may also contribute to extreme price and volume fluctuations 

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31

in the stock market that may affect our stock price for reasons unrelated to our operating performance.  In addition, a 
significant increase in inflation could increase our expenses more rapidly than expected, the effect of which may not 
be offset by corresponding increases in revenue. Conversely, deflation resulting in a decline of prices could reduce 
our revenues.  In the current economic environment, it is difficult to predict whether we will experience significant 
inflation or deflation in the near future. A significant increase in either could have an adverse effect on our results of 
operations.  

Our revenues and financial position will be adversely affected if we are not able to attract and retain clients. 
Our success and revenues depend on attracting and retaining subscribers to our information, marketing and analytic 
services.  Our  subscription-based  information,  marketing  and  analytic  services  generate  the  largest  portion  of  our 
revenues. However, we may be unable to attract new clients, and our existing clients may decide not to add, not to 
renew or to cancel subscription services. In addition, in order to increase our revenue, we must continue to attract 
new  customers,  continue  to  keep  our  cancellation  rate  low  and  continue  to  sell  new  services  to  our  existing 
customers. We may not be able to continue to grow our customer base, keep the cancellation rate for customers and 
services low or sell new services to existing customers as a result of several factors, including without limitation: 
economic pressures, a decision that customers have no need for our services; a decision to use alternative services; 
customers’  and  potential  customers’  pricing  and  budgetary  constraints;  consolidation  in  the  real  estate  and/or 
financial  services  industries;  data  quality;  technical  problems;  or  competitive  pressures.  If  clients  decide  to  cancel 
services  or  not  to  renew  their  subscription  agreements,  and  we  do  not  sell  new  services  to  our  existing  clients  or 
attract new clients, then our renewal rate, and revenues may decline. 

If  we  are  not  able  to  successfully  identify,  finance  and/or  integrate  acquisitions,  our  business  operations  and 
financial  position  could  be  adversely  affected.  We  have  expanded  our  markets  and  services  in  part  through 
acquisitions of complementary businesses, services, databases and technologies, and expect to continue to do so in 
the  future.  Our  strategy  to  acquire  complementary  companies  or  assets  depends  on  our  ability  to  identify,  and  the 
availability of, suitable acquisition candidates. We may incur costs in the preliminary stages of an acquisition, but 
may  ultimately  be  unable  or  unwilling  to  consummate  the  proposed  transaction  for  various  reasons.    In  addition, 
acquisitions  involve  numerous  risks,  including  the  ability  to  realize  or  capitalize  on  synergy  created  through 
combinations;  managing  the  integration  of  personnel  and  products;  managing  geographically  remote  operations, 
such  as  SPN  in  Scotland,  Grecam  S.A.S.  in  France,  CoStar  U.K.  Limited,  Propex  and  Property  and  Portfolio 
Research Ltd. in the U.K.; the diversion of management’s attention from other business concerns; the inherent risks 
in entering markets and sectors in which we have either limited or no direct experience; and the potential loss of key 
employees or clients of the acquired companies. We may not successfully integrate acquired businesses or assets and 
may  not  achieve  anticipated  benefits  of  an  acquisition,  including  expected  synergy.  Acquisitions  could  result  in 
dilutive  issuances  of  equity  securities,  the  incurrence  of  debt,  one-time  write-offs  of  goodwill  and  substantial 
amortization expenses of other intangible assets.  We may be unable to obtain financing on favorable terms, or at all, 
if necessary to finance future acquisitions making it impossible or more costly to acquire complementary businesses.  
If we are able to obtain financing, the terms may be onerous and restrict our operations.   

If we are unable to hire qualified persons for, or retain and continue to develop, our sales force, or if our sales 
force  is  unproductive,  our  revenues  could  be  adversely  affected.  In  order  to  support  revenues  and  future  revenue 
growth, we need to continue to develop, train and retain our sales force. Our ability to build and develop a strong 
sales  force  may  be  affected  by  a  number  of  factors,  including:  our  ability  to  attract,  integrate  and  motivate  sales 
personnel; our ability to effectively train our sales force; the ability of our sales force to sell an increased number of 
services;  our  ability  to  manage  effectively  an  outbound  telesales  group;  the  length  of  time  it  takes  new  sales 
personnel  to  become  productive;  the  competition  we  face  from  other  companies  in  hiring  and  retaining  sales 
personnel;  and  our  ability  to  effectively  manage  a  multi-location  sales  organization.  If  we  are  unable  to  hire 
qualified sales personnel and develop and retain the members of our sales force, including sales force management, 
or if our sales force is unproductive, our revenues or growth rate could decline and our expenses could increase. 

Competition  could  render  our  services  uncompetitive.  The  market  for  information  systems  and  services  in 
general is highly competitive and rapidly changing.  Competition in this market may increase further as a result of 
current  recessionary  economic  conditions,  as  customer  bases  and  customer  spending  have  decreased  and  service 
providers are competing for fewer customer resources.  Our existing competitors, or future competitors, may have 
greater  name  recognition,  larger  customer  bases,  better  technology  or  data,  lower  prices,  easier  access  to  data, 
greater user traffic or greater financial, technical or marketing resources than we have. Our competitors may be able 
to undertake more effective marketing campaigns, obtain more data, adopt more aggressive pricing policies, make 
more attractive offers to potential employees, subscribers, distribution partners and content providers or may be able 

17 

 
 
 
 
to respond more quickly to new or emerging technologies or changes in user requirements. If we are unable to retain 
customers  or  obtain  new  customers,  our  revenues  could  decline.    Increased  competition  could  result  in  lower 
revenues and higher expenses, which would reduce our profitability.  

If we are unable to increase our revenues or our operating costs are higher than expected, our profitability may 
continue to decline and our operating results may fluctuate significantly. We may not be able to accurately forecast 
our  revenues  or  future  revenue  growth  rate.    Many  of  our  expenses,  particularly  personnel  costs  and  occupancy 
costs,  are  relatively  fixed.  As  a  result,  we  may  not  be  able  to  adjust  spending  quickly  enough  to  offset  any 
unexpected  increase  in  expenses  or  revenue  shortfall.  We  may  experience  higher  than  expected  operating  costs, 
including  increased  personnel  costs,  occupancy  costs,  selling  and  marketing  costs,  investments  in  geographic 
expansion, acquisition costs, communications costs, travel costs, software development costs, professional fees and 
other costs. If operating costs exceed our expectations and cannot be adjusted accordingly, our profitability may be 
reduced and our results of operations and financial position will be adversely affected.  Additionally, we may not be 
able to sustain our historic revenue growth rates, and our percentage revenue growth rates may decline.  Our ability 
to  increase  our  revenues  and  operating  profit  will  depend  on  increased  demand  for  our  services.    Our  sales  are 
affected  by,  among  other  things,  general  economic  and  commercial  real  estate  conditions.    Reduced  demand, 
whether due to changes in customer preference, a further weakening of the U.S. or global economy, competition or 
other reasons, may result in decreased revenue and growth, adversely affecting our operating results. 

International  operations  expose  us  to  additional  business  risks,  which  may  reduce  our  profitability.  Our 
international  operations  and  expansion  subject  us  to  additional  business  risks,  including:  currency  exchange  rate 
fluctuations;  adapting  to  the  differing  business  practices  and  laws  in  foreign  countries;  difficulties  in  managing 
foreign  operations;  limited  protection  for  intellectual  property  rights  in  some  countries;  difficulty  in  collecting 
accounts receivable and longer collection periods; costs of enforcing contractual obligations; impact of recessions in 
economies outside the U.S.; and potentially adverse tax consequences. In addition, international expansion imposes 
additional  burdens  on  our  executive  and  administrative  personnel,  systems  development,  research  and  sales 
departments,  and  general  managerial  resources.  If  we  are  not  able  to  manage  our  international  operations 
successfully, we may incur higher expenses and our profitability may be reduced. Finally, the investment required 
for additional international expansion could exceed the profit generated from such expansion, which would reduce 
our profitability and adversely affect our financial position.  

Fluctuating foreign currencies may negatively impact our business, results of operations and financial position. 
Due  to  our  acquisitions  of  CoStar  U.K.  Limited  (formerly  FOCUS  Information  Limited),  SPN,  Grecam  S.A.S., 
Propex, and Property and Portfolio Research Ltd., a portion of our business is denominated in the British Pound and 
Euro and as a result, fluctuations in foreign currencies may have an impact on our business, results of operations and 
financial  position.    Foreign  currency  exchange  rates  have  fluctuated  and  may  continue  to  fluctuate.    Significant 
foreign currency exchange rate fluctuations may negatively impact our international revenue, which in turn affects 
our consolidated revenue.  Currencies may be affected by internal factors, general economic conditions and external 
developments in other countries, all of which can have an adverse impact on a country’s currency. Currently, we are 
not party to any hedging transactions intended to reduce our exposure to exchange rate fluctuations. We may seek to 
enter into hedging transactions in the future, but we may be unable to enter into these transactions successfully, on 
acceptable terms or at all. We cannot predict whether we will incur foreign exchange losses in the future. Further, 
significant foreign exchange fluctuations resulting in a decline in the British Pound or Euro may decrease the value 
of  our  foreign  assets,  as  well  as  decrease  our  revenues  and  earnings  from  our  foreign  subsidiaries,  which  would 
reduce our profitability and adversely affect our financial position. 

Negative  conditions  in  the  global  credit  markets  may  affect  the  liquidity  of  a  portion  of  our  long-term 
investments.  Currently, our long-term investments include mostly AAA rated auction rate securities (“ARS”), which 
are  primarily  student  loan  securities  supported  by  guarantees  from  the  Federal  Family  Education  Loan  Program 
(“FFELP”) of the U.S. Department of Education. Continuing negative conditions in the global credit markets have 
prevented some investors from liquidating their holdings of auction rate securities because the amount of securities 
submitted  for  sale  has  exceeded  the  amount  of  purchase  orders  for  such  securities.  As  of  December  31,  2010,  we 
held  $32.2  million  par  value  of  ARS,  all  of  which  failed  to  settle  at  auctions.  When  an  auction  fails  for  ARS  in 
which we have invested, we may be unable to liquidate some or all of these securities at par. In the event we need or 
desire to immediately access these funds, we will not be able to do so until a future auction on these investments is 
successful, a buyer is found outside the auction process or an alternative action is determined. If a buyer is found but 
is  unwilling  to  purchase  the  investments  at  par,  we  may  incur  a  loss,  which  would  reduce  our  profitability  and 
adversely affect our financial position. 

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33

Our ARS  investments  are  not  currently  trading  and  therefore  do  not  currently  have  a  readily  determinable 
market value.  Accordingly, the estimated fair value of the ARS no longer approximates par value.  We have used a 
discounted  cash  flow  model  to  determine  the  estimated  fair  value  of  our  investment  in  ARS  as  of  December  31, 
2010.  The assumptions used in preparing the discounted cash flow model include estimates for interest rates, credit 
spreads, timing and amount of cash flows, liquidity risk premiums, expected holding periods and default risk of the 
ARS.  Based on this assessment of fair value, as of December 31, 2010, we determined there was a decline in the 
fair  value  of  our  ARS  investments  of  approximately  $3.0  million.    The  decline  was  deemed  to  be  a  temporary 
impairment and was recorded as an unrealized loss in accumulated other comprehensive loss in stockholders’ equity.  
If the issuers of these ARS are unable to successfully close future auctions and/or their credit ratings deteriorate, we 
may  be  required  to  record  additional  unrealized  losses  in  accumulated  other  comprehensive  loss  or  an  other-than-
temporary impairment charge to earnings on these investments, which would reduce our profitability and adversely 
affect our financial position. 

We have not made any material changes in the accounting methodology used to determine the fair value of the 
ARS.  We do not expect any material changes in the near term to the underlying assumptions used to determine the 
unobservable inputs used to calculate the fair value of the ARS as of December 31, 2010.  However, if changes in 
these  assumptions  occur,  and,  should  those  changes  be  significant,  we  may  be  required  to  record  additional 
unrealized  losses  in  accumulated  other  comprehensive  loss  or  an  other-than-temporary  impairment  charge  to 
earnings on these investments. 

Our current or future geographic expansion plans may not result in increased revenues, which may negatively 
impact  our  business,  results  of  operations  and  financial  position.  Expanding  into  new  markets  and  investing 
resources towards increasing the depth of our coverage within existing markets imposes additional burdens on our 
research,  systems  development,  sales,  marketing  and  general  managerial  resources.    During  2011,  we  plan  to 
continue  to  increase  the  depth  of  our  coverage  in  the  U.S.,  U.K  and  France,  and  we  may  expand  into  additional 
geographies.  If we are unable to manage our expansion efforts effectively, if our expansion efforts take longer than 
planned or if our costs for these efforts exceed our expectations, our financial position could be adversely affected. 
In  addition,  if  we  incur  significant  costs  to  improve  data  quality  within  existing  markets,  or  are  not  successful  in 
marketing and selling our services in these markets or in new markets, our expansion may have a material adverse 
effect on our financial position by increasing our expenses without increasing our revenues, adversely affecting our 
profitability. 

We may be subject to legal liability for collecting, displaying or distributing information. Because the content in 
our database is collected from various sources and distributed to others, we may be subject to claims for breach of 
contract,  defamation,  negligence,  unfair  competition  or  copyright  or  trademark  infringement  or  claims  based  on 
other theories. We could also be subject to claims based upon the content that is accessible from our website through 
links to other websites or information on our website supplied by third parties. Even if these claims do not result in 
liability  to  us,  we  could  incur  significant  costs  in  investigating  and  defending  against  any  claims.  Our  potential 
liability for information distributed by us to others could require us to implement measures to reduce our exposure to 
such liability, which may require us to expend substantial resources and limit the attractiveness of our information, 
marketing and analytic services to users. 

Litigation or government investigations in which we become involved may significantly increase our expenses 
and  adversely  affect  our  stock  price.  Currently  and  from  time  to  time,  we  are  a  party  to  various  lawsuits.  Any 
lawsuits,  threatened  lawsuits  or  government  investigations  in  which  we  are  involved  could  cost  us  a  significant 
amount  of  time  and  money  to  defend,  could  distract  management’s  attention  away  from  operating  our  business, 
could  result  in  negative  publicity  and  could  adversely  affect  our  stock  price.  In  addition,  if  any  claims  are 
determined  against  us  or  if  a  settlement  requires  us  to  pay  a  large  monetary  amount  or  take  other  action  that 
materially  restricts  or  impedes  our  operations,  our  profitability  could  be  significantly  reduced  and  our  financial 
position could be adversely affected. We cannot make assurances that we will have any or sufficient insurance  to 
cover any litigation claims. 

An impairment in carrying value of goodwill could negatively impact our consolidated results of operations and 
net  worth.  Goodwill  and  identifiable  intangible  assets  not  subject  to  amortization  are  tested  annually  by  each 
reporting unit on October 1st of each year for impairment and are tested for impairment more frequently based upon 
the  existence  of  one  or  more  indicators.    We  consider  our  operating  segments,  U.S.  and  International,  as  our 
reporting units under Financial Accounting Standards Board (“FASB”) authoritative guidance for consideration of 

19 

 
 
 
 
 
 
potential  impairment  of  goodwill.  We  assess  the  impairment  of  long-lived  assets,  identifiable  intangibles  and 
goodwill whenever events or changes in circumstances indicate that the carrying value may not be recoverable. The 
existence  of  one  or  more  of  the  following  indicators  could  cause  us  to  test  for  impairment  prior  to  the  annual 
assessment:   

•  Significant underperformance relative to historical or projected future operating results;  
•  Significant changes in the manner of our use of acquired assets or the strategy for our overall business; 
•  Significant negative industry or economic trends; or  
•  Significant decline in our market capitalization relative to net book value for a sustained period.  

These types of events or indicators and the resulting impairment analysis could result in goodwill impairment 
charges in the future, which would reduce our profitability. Impairment charges could negatively affect our financial 
results in the periods of such charges, which may reduce our profitability. As of December 31, 2010, we had $79.6 
million of goodwill, $55.3 million in our U.S. segment and $24.3 million in our International segment. 

Our  stock  price  may  be  negatively  affected  by  fluctuations  in  our  financial  results.  Our  operating  results, 
revenues and expenses may fluctuate as a result of changes in general economic conditions and also for many other 
reasons,  many  of  which  are  outside  of  our  control,  such  as:  cancellations  or  non-renewals  of  our  services; 
competition;  our  ability  to  control  expenses;  loss  of  clients  or  revenues;  technical  problems  with  our  services; 
changes  or  consolidation  in  the  real  estate  industry;  our  investments  in  geographic  expansion  and  to  increase 
coverage  in  existing  markets;  interest  rate  fluctuations;  the  timing  and  success  of  new  service  introductions  and 
enhancements;  successful  execution  of  our  expansion  plans;  data  quality;  the  development  of  our  sales  force; 
managerial  execution;  employee  retention;  foreign  currency  and  exchange  rate  fluctuations;  inflation;  successful 
adoption  of  and  training  on  our  services;  litigation;  acquisitions  of  other  companies  or  assets;  sales,  brand 
enhancement  and  marketing  promotional  activities;  client  support  activities;  changes  in  client  budgets;  or  our 
investments  in  other  corporate  resources.  In  addition,  changes  in  accounting  policies  or  practices  may  affect  our 
level of net income. Fluctuations in our financial results, revenues and expenses may cause the market price of our 
common stock to decline. 

Market  volatility  may  have  an  adverse  effect  on  our  stock  price.  The  trading  price  of  our  common  stock  has 
fluctuated widely in the past, and we expect that it will continue to fluctuate in the future. The price could fluctuate 
widely  based  on  numerous  factors,  including:  economic  factors;  quarter-to-quarter  variations  in  our  operating 
results;  changes  in  analysts’  estimates  of  our  earnings;  announcements  by  us  or  our  competitors  of  technological 
innovations  or  new  services;  general  conditions  in  the  commercial  real  estate  industry;  developments  or  disputes 
concerning copyrights or proprietary rights or other legal proceedings; and regulatory developments. In addition, the 
stock  market  in  general,  and  the  shares  of  internet-related  and  other  technology  companies  in  particular,  have 
experienced extreme price fluctuations. This volatility has had a substantial effect on the market prices of securities 
issued by many companies for reasons unrelated to the operating performance of the specific companies and may 
have the same effect on the market price of our common stock. 

We  may  not  be  able  to  successfully  introduce  new  or  upgraded  information,  marketing  and  analytic  services, 
which could decrease our revenues and our profitability. Our future business and financial success will depend on 
our  ability  to  continue  to  introduce  new  and  upgraded  services  into  the  marketplace.  To  be  successful,  we  must 
adapt  to  rapid  technological  changes  by  continually  enhancing  our  information,  marketing  and  analytic  services. 
Developing new services and upgrades to services imposes heavy burdens on our systems department, management 
and researchers. This process is costly, and we cannot assure you that we will be able to successfully develop and 
enhance our services. In addition, successfully launching and selling a new service puts pressure on our sales and 
marketing  resources.  If  we  are  unable  to  develop  new  or  upgraded  services,  then  our  customers  may  choose  a 
competitive service over ours and our revenues may decline and our profitability may be reduced. In addition, if we 
incur significant costs in developing new or upgraded services, are not successful in marketing and selling these new 
services or upgrades, or our customers fail to accept these new services, it could have a material adverse effect on 
our results of operations by decreasing our revenues and reducing our profitability. 

Our  expansion  into  the  commercial  real  estate  analytics  sector  may  not  be  successful  or  may  not  result  in 
increased  revenues,  which  may  negatively  impact  our  business,  results  of  operations  and  financial  position.  
Expanding into the commercial real estate market research and forecasting arena imposes additional burdens on our 
research,  systems  development,  sales,  marketing  and  general  management  resources.    During  2011,  we  expect  to 
continue  to  expand  our  presence  in  the  commercial  real  estate  analytics  sector.    If  we  are  unable  to  manage  this 

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35

expansion effectively or if our costs for this effort exceed our expectations, our financial position could be adversely 
affected.    In  addition,  if  we  incur  additional  costs  to  expand  our  analytics  services  and  we  are  not  successful  in 
marketing  or  selling  these  expanded  services,  our  expansion  may  have  a  material  adverse  effect  on  our  financial 
position by increasing our expenses without increasing our revenues, adversely affecting our profitability. 

As  a  result  of  consolidation  of  facilities,  we  may  incur  additional  costs.   We  have  taken,  and  may  continue  to 
take, actions that may increase our cost structure in the short-term but are intended to reduce certain portions of our 
long-term cost structure, such as consolidation of office space. As a result of consolidation of office space, we may 
reduce our long-term occupancy costs, but incur restructuring charges.  If our long-term cost reduction efforts are 
ineffective or our estimates of cost savings are inaccurate, our profitability could be negatively impacted.  Expected 
savings  from  relocating  facilities  can  be  highly  variable  and  uncertain.    For  instance,  we  may  not  meet  the 
requirements necessary to receive the full property tax abatement provided by the District of Columbia as incentive 
for  us  to  relocate  our  headquarters  to  downtown  Washington,  DC  and  may  incur  greater  property  taxes  than 
anticipated in connection with the move to our new headquarters.    Further, we may not be successful in achieving 
the operating efficiencies or operating cost reductions expected from these efforts in the amounts or at the times we 
anticipate. 

If we are unable to enforce or defend our ownership and use of intellectual property, our business, competitive 
position and operating results could be harmed. The success of our business depends in large part on the intellectual 
property involved in our methodologies, database, services and software. We rely on a combination of trade secret, 
patent,  copyright  and  other  laws,  nondisclosure  and  noncompetition  provisions,  license  agreements  and  other 
contractual provisions and technical measures to protect our intellectual property rights. However, current law may 
not provide for adequate protection of our databases and the actual data. In addition, legal standards relating to the 
validity, enforceability and scope of protection of proprietary rights in internet related businesses are uncertain and 
evolving,  and  we  cannot  assure  you  of  the  future  viability  or  value  of  any  of  our  proprietary  rights.  Our  business 
could be significantly harmed if we are not able to protect our content and our other intellectual property. The same 
would be true if a court found that our services infringe other persons’ intellectual property rights. Any intellectual 
property lawsuits or threatened lawsuits in which we are involved, either as a plaintiff or as a defendant, could cost 
us  a  significant  amount  of  time  and  money  and  distract  management’s  attention  from  operating  our  business.  In 
addition, if we do not prevail on any intellectual property claims, this could result in a change to our methodology or 
information, marketing and analytic services and could reduce our profitability. 

Technical  problems  that  affect  either  our  customers’  ability  to  access  our  services,  or  the  software,  internal 
applications and systems underlying our services, could lead to reduced demand for our information, marketing and 
analytic  services,  lower  revenues  and  increased  costs.  Our  business  increasingly  depends  upon  the  satisfactory 
performance,  reliability  and  availability  of  our  website,  the  internet  and  our  service  providers.  Problems  with  our 
website, the internet or the services provided by our local exchange carriers or internet service providers could result 
in slower connections for our customers or interfere with our customers’ access to our information, marketing and 
analytic  services.  If  we  experience  technical  problems  in  distributing  our  services,  we  could  experience  reduced 
demand  for  our  information,  marketing  and  analytic  services.  In  addition,  the  software,  internal  applications  and 
systems  underlying our services are complex and may not be efficient  or  error-free.  Our  careful  development and 
testing may not be sufficient to ensure that we will not encounter technical problems when we attempt to enhance 
our software, internal applications and systems. Any inefficiencies, errors or technical problems with our software, 
internal applications and systems could reduce the quality of our services or interfere with our customers’ access to 
our  information,  marketing  and  analytic  services,  which  could  reduce  the  demand  for  our  services,  lower  our 
revenues and increase our costs. 

If  we  are  not  able  to  obtain  and  maintain  accurate,  comprehensive  or  reliable  data,  we  could  experience 
reduced  demand  for  our  information,  marketing  and  analytic  services.  Our  success  depends  on  our  clients’ 
confidence  in  the  comprehensiveness,  accuracy  and  reliability  of  the  data  and  analysis  we  provide.  The  task  of 
establishing and maintaining accurate and reliable data and analysis is challenging. If our data, including the data we 
obtain  from  third  parties,  or  analysis  is  not  current,  accurate,  comprehensive  or  reliable,  we  could  experience 
reduced demand for our services or legal claims by our customers, which could result in lower revenues and higher 
expenses.  Our  U.S.  researchers  use  integrated  internal  research  processes  to  update  our  database.    Any 
inefficiencies, errors, or technical problems with this application could reduce the quality of our data, which could 
result in reduced demand for our services, lower revenues and higher costs.   

21 

 
 
 
 
 
Temporary or permanent outages of our  computers, software  or telecommunications  equipment  could  lead to 
reduced  demand  for  our  information,  marketing  and  analytic  services,  lower  revenues  and  increased  costs.  Our 
operations  depend  on  our  ability  to  protect  our  database,  computers  and  software,  telecommunications  equipment 
and  facilities  against  damage  from  potential  dangers  such  as  fire,  power  loss,  security  breaches,  computer  viruses 
and  telecommunications  failures.  Any  temporary  or  permanent  loss  of  one  or  more  of  these  systems  or  facilities 
from an accident, equipment malfunction or some other cause could harm our business. If we experience a failure 
that  prevents  us  from  delivering  our  information,  marketing  and  analytic  services  to  clients,  we  could  experience 
reduced demand for our information, marketing and analytic services, lower revenues and increased costs. 

Changes  in  accounting  and  reporting  policies  or  practices  may  affect  our  financial  results or  presentation of 
results, which may affect our stock price. Changes in accounting and reporting policies or practices could reduce our 
net  income,  which  reductions  may  be  independent  of  changes  in  our  operations.  These  reductions  in  reported  net 
income could cause our stock price to decline.  For example, in 2006, we adopted authoritative guidance for stock 
compensation, which required us to expense the value of granted stock options.  

Our  business  depends  on  retaining  and  attracting  highly  capable  management  and  operating  personnel.  Our 
success depends in large part on our ability to retain and attract management and operating personnel, including our 
President and Chief Executive Officer, Andrew Florance, and our other officers and key employees. Our business 
requires highly skilled technical, sales, management, web development, marketing and research personnel, who are 
in  high  demand  and  are  often  subject  to  competing  offers.  To  retain  and  attract  key  personnel,  we  use  various 
measures,  including  employment  agreements,  awards  under  a  stock  incentive  plan  and  incentive  bonuses  for  key 
executive officers. These measures may not be enough to retain and attract the personnel we need or to offset the 
impact on our business of the loss of the services of Mr. Florance or other key officers or employees.   

Item 1B. 

Unresolved Staff Comments 

None. 

Item 2. 

Properties 

On February 5, 2010, we purchased an office building located at 1331 L Street, NW, in downtown Washington, 
DC,  through  our  wholly  owned  subsidiary,  1331  L  Street  Holdings,  LLC  (“Holdings”),  for  use  as  our  new 
headquarters and have since relocated to this location. This facility is used primarily by our U.S. segment.  The lease 
for our previous headquarters in Bethesda, MD expired on October 15, 2010. 

On February 2, 2011, Holdings and GLL L-Street 1331, LLC (“GLL”), an affiliate of Munich-based GLL Real 
Estate Partners GmbH, entered into a purchase and sale agreement pursuant to which (i) Holdings agreed to sell to 
GLL its interest in the 169,429 square-foot office building located at 1331 L Street, NW, in downtown Washington, 
DC, and (ii) CoStar Realty Information, Inc. (“CoStar Realty”), our wholly owned subsidiary, agreed to enter into a 
lease expiring May 31, 2025 (with two 5-year renewal options) with GLL to lease back 149,514 square feet of the 
office space located in this building, which we will continue to use as our corporate headquarters.  The closing of the 
sale took place on February 18, 2011.  

Our principal facility in the U.K. is located in London, England, where we occupy approximately 11,000 square 
feet of office space.  Our lease for this facility has a maximum term ending October 20, 2018, with early termination 
at our option on October 18, 2013, with advance notice. This facility is used primarily by our International segment. 

In  addition  to  our  downtown  Washington,  DC  and  London,  England  facilities,  our  research  operations  are 
principally  run  out  of  leased  spaces  in  San  Diego,  California;  Columbia,  Maryland;  White  Marsh,  Maryland; 
Glasgow, Scotland; and Paris, France. Additionally, we lease office space in a variety of other metropolitan areas, 
which generally house our field sales offices. These locations include, without limitation, the following: New York; 
Los  Angeles;  Chicago;  San  Francisco;  Boston;  Manchester,  England;  Orange  County,  California;  Philadelphia; 
Houston;  Atlanta;  Phoenix;  Detroit;  Pittsburgh;  Fort  Lauderdale;  Denver;  Dallas;  Kansas  City;  Cleveland; 
Cincinnati;  Indianapolis;  Austin;  Salt  Lake  City;  Seattle;  and  St.  Louis.    Our  subsidiaries,  PPR  and  Resolve 
Technology, share space with CoStar in one facility leased in Boston, Massachusetts. 

We believe these facilities are suitable and appropriately support our business needs. 

22 

 
 
 
 
 
 
 
 
 
 
 
Item 3. 

Legal Proceedings 

Currently, and from time to time, we are involved in litigation incidental to the conduct of our business. We are 
not a party to any lawsuit or proceeding that, in the opinion of our management based on consultations with legal 
counsel, is likely to have a material adverse effect on our financial position or results of operations. 

Item 4. 

[Removed and Reserved] 

COsTAr GrOup 2010 AnnuAL RepoRT

37

23 

 
 
 
PART II 

Item 5. 

Market for the Registrant’s Common Stock, Related Stockholder Matters and Issuer Purchases 
of Equity Securities  

Price  Range  of  Common  Stock.  Our  common  stock  is  traded  on  the  Nasdaq  Global  Select  Market  under  the 
symbol “CSGP.” The following table sets forth, for the periods indicated, the high and low daily closing prices per 
share of our common stock, as reported by the Nasdaq Global Select Market. 

Year Ended December 31, 2009 
First Quarter 
Second Quarter 
Third Quarter 
Fourth Quarter 

Year Ended December 31, 2010 
First Quarter 
Second Quarter 
Third Quarter 
Fourth Quarter 

High 

Low 

$  35.93 
$  40.09 
$  41.57 
$  44.43 

$  42.97 
$  45.95 
$  49.53 
$  57.75 

$  24.23 
$  31.10 
$  33.97 
$  38.35 

$  38.22 
$  38.80 
$  37.66 
$  48.86 

As of February 3, 2011, there were 438 holders of record of our common stock.  

Dividend  Policy.  We  have  never  declared  or  paid  any  dividends  on  our  common  stock.  Any  future 
determination to pay dividends will be at the discretion of our Board of Directors, subject to applicable limitations 
under  Delaware  law,  and  will  be  dependent  upon  our  results  of  operations,  financial  position  and  other  factors 
deemed relevant by our Board of Directors. We do not anticipate paying any dividends on our common stock during 
the foreseeable future, but intend to retain any earnings for future growth of our business.  

Recent  Issues  of  Unregistered  Securities.  We  did  not  issue  any  unregistered  securities  during  the  year  ended 

December 31, 2010.   

Issuer Purchases of Equity Securities.    The following table is a summary of our repurchases of common stock 

during each of the three months in the quarter ended December 31, 2010: 

ISSUER PURCHASES OF EQUITY SECURITIES 

Month, 2010 
October 1 through 31 
November 1 through 30 
December 1 through 31 
Total 

Total Number of 
Shares Purchased 
⎯ 
⎯ 
30,400 (1) 
30,400 

Average Price Paid 
per Share 
⎯ 
⎯ 
$55.70 
$55.70 

Total Number of 
Shares Purchased 
as Part of Publicly 
Announced Plans 
or Programs 
⎯ 
⎯ 
⎯ 
⎯ 

Maximum Number of 
Shares that May Yet 
Be Purchased Under 
the Plans or Programs 
⎯ 
⎯ 
⎯ 
⎯ 

(1) The number of shares purchased consists of shares of common stock tendered by employees to the Company 
to satisfy the employees’ tax withholding obligations arising as a result of vesting of restricted stock grants under the 
Company’s  1998  Stock  Incentive  Plan,  as  amended,  and  the  Company’s  2007  Stock  Incentive  Plan,  as  amended, 
which shares were purchased by the Company based on their fair market value on the vesting date.  None of these 
share purchases were part of a publicly announced program to purchase common stock of the Company. 

24 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

39

Stock Price Performance Graph  

The stock performance graph below shows how an initial investment of $100 in our common stock would have 

compared to:  

•  An equal investment in the Standards & Poor's Stock 500 (“S&P 500”) Index.  

•  An equal investment in the S&P 500 Application Software Index. 

The  comparison  covers  the  period  beginning  December  31,  2005,  and  ending  on  December  31,  2010,  and 
assumes the reinvestment of any dividends. You should note that this performance is historical and is not necessarily 
indicative of future price performance.  

COMPARISON OF CUMULATIVE FIVE YEAR TOTAL RETURN 

CoStar Group, Inc. 

S&P 500 Index 

S&P 500 Application Software Index 

200 

150 

S
R
A
L
L
O
D

100 

50 

0 

12/31/05 

12/31/06 

12/31/07 

12/31/08 

12/31/09 

12/31/10 

Company / Index 
CoStar Group, Inc. 
S&P 500 Index 
S&P 500 Application Software Index 

12/31/05 
100 
100 
100 

12/31/06 
124.07 
115.79 
105.33 

12/31/07 
109.45 
122.16 
117.00 

12/31/08  12/31/09  12/31/10 
133.33 
96.76 
111.99 
97.33 
137.37 
102.21 

76.30 
76.96 
63.96 

25 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 6.  

Selected Consolidated Financial and Operating Data 

Selected Consolidated Financial and Operating Data 
(in thousands, except per share data and other operating data) 

The following table provides selected consolidated financial and other operating data for the five years ended 
December 31, 2010. The consolidated statement of operations data shown below for each of the three years ended 
December 31, 2008, 2009, and 2010 and the consolidated balance sheet data as of December 31, 2009 and 2010 are 
derived from audited consolidated financial statements that are included in this report. The consolidated statement of 
operations data for each of the years ended December 31, 2006 and 2007 and the consolidated balance sheet data as 
of December 31, 2006, 2007, and 2008 shown below are derived from audited consolidated financial statements for 
those years that are not included in this report. 

Year Ended December 31, 

Consolidated Statement of Operations Data: 
Revenues ..................................................................  $ 
Cost of revenues .......................................................   
Gross margin ............................................................   
Operating expenses ..................................................   
Income from operations ...........................................   
Interest and other income, net ..................................   
Income before income taxes.....................................   
Income tax expense, net ...........................................   
Net income  ..............................................................  $ 
Net income per share − basic ...................................   $   

2008 

2007 

2006 
158,889    $  192,805    $  212,428 
73,408 
139,020 
99,232 
39,788 
4,914 
44,702 
20,079 
24,623 
1.27 

76,704     
116,101     
98,249     
17,852     
8,045     
25,897     
9,946     
15,951    $ 
0.84    $   

56,136   
102,753   
88,672   
14,081   
6,845   
20,926   
8,516   
12,410    $ 
0.66    $  

2009 
209,659 
73,714 
135,945 
104,110 
31,835 
1,253 
33,088 
14,395 
18,693 
0.95 

2010 

  $  226,260 
83,599 
142,661 
119,886 
22,775 
735 
23,510 
10,221 
13,289 
0.65 

  $ 
  $ 

  $ 

  $ 
  $   

Net income per share − diluted ................................  $   

0.65    $  

0.82    $   

1.26 

  $   

0.94 

  $   

0.64  

Weighted average shares outstanding − basic..........   

Weighted average shares outstanding − diluted .......   

18,751   

19,165   

19,044     

19,404     

19,372 

19,550 

19,780 

19,925 

20,330 

20,707 

Consolidated Balance Sheet Data: 
Cash, cash equivalents, short-term and long-term 

investments...........................................................  $ 

Working capital ........................................................   
Total assets ...............................................................   
Total liabilities..........................................................   
Stockholders’ equity.................................................   

2006 

2007 

2008 

2009 

2010 

As of December 31, 

158,148    $ 
154,606   
275,437   
25,327   
250,110   

187,426    $ 
167,441     
321,843     
40,038     
281,805     

224,590 
183,347 
334,384 
30,963 
303,421 

  $ 

255,698    $ 
203,660   
404,579   
45,573   
359,006   

239,316 
184,247 
439,648 
58,146 
381,502 

Other Operating Data: 
Number of subscription client sites..........................   
Millions of properties in database ............................   

2006 
13,257   
2.1   

2007 
14,467     
2.7     

2008 
15,920 
3.2 

2009 
16,020 
      3.6 

2010 

16,781 
4.0 

As of December 31, 

26 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

41

Item 7. 

Management’s Discussion and Analysis of Financial Condition and Results of Operations  

The  following  Management’s  Discussion  and  Analysis  of  Financial  Condition  and  Results  of  Operations 
contains  “forward-looking  statements,”  including  statements  about  our  beliefs  and  expectations.  There  are  many 
risks  and  uncertainties  that  could  cause  actual  results  to  differ  materially  from  those  discussed  in  the  forward-
looking statements. Potential factors that could cause actual results to differ materially from those discussed in any 
forward-looking statements include, but are not limited to, those stated above in Item 1A. under the headings “Risk 
Factors ⎯ Cautionary Statement Concerning Forward-Looking Statements” and “⎯Risk Factors,” as well as those 
described from time to time in our filings with the Securities and Exchange Commission.  

All forward-looking statements are based on information available to us on the date of this filing and we assume 
no obligation to update such statements. The following discussion should be read in conjunction with our Quarterly 
Reports  on  Form  10-Q,  Current  Reports  on  Form  8-K  and  other  filings  with  the  Securities  and  Exchange 
Commission and the consolidated financial statements and related notes in this Annual Report on Form 10-K.  

Overview   

CoStar Group, Inc. (“CoStar”) is the number one provider of information, marketing and analytic services to the 
commercial  real  estate  industry  in  the  U.S.  and  the  U.K.  based  on  the  fact  that  we  offer  the  most  comprehensive 
commercial  real  estate  database  available,  have  the  largest  research  department  in  the  industry,  provide  more 
information,  marketing  and  analytic  services  than  any  of  our  competitors  and  believe  we  generate  more  revenues 
than  any  of  our  competitors.  We  have  created  a  standardized  information,  marketing  and  analytic  platform  where 
members  of  the  commercial  real  estate  and  related  business  community  can  continuously  interact  and  facilitate 
transactions by efficiently exchanging accurate and standardized commercial real estate information. Our integrated 
suite of online service offerings includes information about space available for lease, comparable sales information, 
tenant  information,  information  about  properties  for  sale,  internet  marketing  services,  analytical  capabilities, 
information  for  clients'  websites,  information  about  industry  professionals  and  their  business  relationships,  data 
integration, and industry news. We also provide market research and analysis for commercial real estate investors 
and lenders via our PPR service offerings and portfolio and debt management and reporting capabilities through our 
Resolve Technology service offerings. Our service offerings span all commercial property types, including office, 
industrial, retail, land, mixed-use, hospitality and multifamily. 

Since  1994,  we  have  expanded  the  geographical  coverage  of  our  existing  information  and  marketing  services 
and  developed  new  information,  marketing  and  analytic  services.  In  addition  to  internal  growth,  this  expansion 
included  the  acquisitions  of  Chicago  ReSource,  Inc.  in  Chicago  in  1996  and  New  Market  Systems,  Inc.  in 
San Francisco in 1997. In August 1998, we expanded into the Houston region through the acquisition of Houston-
based real estate information provider C Data Services, Inc. In January 1999, we expanded further into the Midwest 
and Florida by acquiring LeaseTrend, Inc. and into Atlanta and Dallas/Fort Worth by acquiring Jamison Research, 
Inc.  In  February  2000,  we  acquired  COMPS.COM,  Inc.,  a  San Diego-based  provider  of  commercial  real  estate 
information.  In  November  2000,  we  acquired  First  Image  Technologies,  Inc.,  a  California-based  provider  of 
commercial  real  estate  software.  In  September  2002,  we  expanded  further  into  Portland,  Oregon  through  the 
acquisition  of  certain  assets  of  Napier  Realty  Advisors  (doing  business  as  REAL-NET).  In  January  2003,  we 
established a base in the U.K. with our acquisition of London-based FOCUS Information Limited. In May 2004, we 
expanded  into  Tennessee  through  the  acquisition  of  Peer  Market  Research,  Inc.,  and  in  September  2004,  we 
extended  our  coverage  of  the  U.K.  through  the  acquisition  of  Scottish  Property  Network.  In  September  2004,  we 
strengthened our position in Denver, Colorado through the acquisition of substantially all of the assets of RealComp, 
Inc., a local comparable sales information provider. 

In January 2005, we acquired National Research Bureau, a Connecticut-based provider of U.S. shopping center 
information.  In  December  2006,  our  U.K.  subsidiary,  CoStar  Limited,  acquired  Grecam  S.A.S.  (“Grecam”),  a 
provider  of  commercial  property  information  and  market-level  surveys,  studies  and  consulting  services  located  in 
Paris, France. In February 2007, CoStar Limited also acquired Property Investment Exchange Limited (“Propex”), a 
provider of commercial property information and operator of an electronic platform that facilitates the exchange of 
investment  property  located  in  London,  England.  In  April  2008,  we  acquired  the  assets  of  First  CLS,  Inc.  (doing 
business  as  the  Dorey  Companies  and  DoreyPRO),  an  Atlanta-based  provider  of  local  commercial  real  estate 
information.  Most  recently,  in  July  2009,  we  acquired  Massachusetts-based  Property  and  Portfolio  Research,  Inc. 
(“PPR”), a provider of real estate analysis, market forecasts and credit risk analytics to the commercial real estate 
industry,  and  its  wholly  owned  U.K.  subsidiary  Property  and  Portfolio  Research  Ltd.,  and  in  October  2009,  we 

27 

 
 
 
 
 
 
acquired  Massachusetts-based  Resolve  Technology,  a  provider  of  business  intelligence  and  portfolio  management 
software serving the institutional real estate investment industry. The PPR and Resolve Technology acquisitions are 
discussed later in this section under the heading “Recent Acquisitions.” 

We have consistently worked to expand our service offerings, both in terms of geographical coverage and the 
scope  of  services  offered,  in  order  to  position  the  company  for  future  revenue  growth.    In  2004,  we  began  our 
expansion into 21 new metropolitan markets throughout the U.S. and began expanding the geographical coverage of 
many  of  our  existing  U.S.  and  U.K.  markets.  We  completed  our  expansion  into  the  21  new  markets  in  the  first 
quarter  of  2006.  In  early  2005,  in  conjunction  with  the  acquisition  of  National  Research  Bureau,  we  launched  a 
major effort to expand our coverage of retail real estate information. The retail component of our flagship product, 
CoStar  Property  Professional,  was  unveiled  in  May  2006  at  the  International  Council  of  Shopping  Centers’ 
convention in Las Vegas. 

During the second half of 2006, in order to expand the geographical coverage of our service offerings, we began 
actively  researching  commercial  properties  in  81  new  Core  Based  Statistical  Areas  (“CBSAs”)  in  the  U.S.,  we 
increased  our  U.S.  field  research  fleet  by  adding  89  vehicles  and  we  hired  researchers  to  staff  these  vehicles.  We 
released  our  CoStar  Property  Professional  service  in  the  81  new  CBSAs  across  the  U.S.  in  the  fourth  quarter  of 
2007.  Throughout  our  recent  expansion  efforts,  we  have  remained  focused  on  ensuring  that  CoStar  continues  to 
provide the quality of information our customers expect. As such, in 2010 we expanded our research operations, and 
we  plan  to  continue  to  grow  our  research  operations  slightly  in  2011  in  order  to  continue  to  meet  customer 
expectations. 

During  the  second  half  of  2009,  as  a  part  of  our  strategy  to  provide  subscribers  with  tools  for  conducting 
primary  research  and  analysis  on  commercial  real  estate,  we  expanded  subscribers’  capabilities  to  use  CoStar’s 
database of research-verified commercial property information to conduct in-depth analysis and generate reports on 
trends in sales and leasing activity online. Further, in July 2009, we acquired PPR and its wholly owned subsidiary, 
providers of real estate investment analysis and market forecasting services. 

In  connection  with  our  acquisitions  of  Propex,  Grecam  and  PPR’s  wholly  owned  subsidiary  Property  and 
Portfolio Research Ltd., we intend to expand the coverage of our service offerings within the U.K. and to integrate 
our international operations more fully with those in the U.S.  We have gained operational efficiencies as a result of 
consolidating a majority of our U.K. research operations in one location in Glasgow and combining the majority of 
our remaining U.K. operations in one central location in London. 

We  intend  to  eventually  introduce  a  consistent  international  platform  of  service  offerings.  In  2007,  we 
introduced  the  “CoStar  Group”  as  the  brand  encompassing  our  international  operations,  and  in  early  2010  we 
launched  Showcase,  our  Internet  marketing  service  that  provides  commercial  real  estate  professionals  the 
opportunity to make their listings accessible to all visitors to our public websites, in the U.K. We believe that our 
recent U.S. and international expansion and integration efforts have created a platform for long-term growth, which 
we intend to continue to develop, invest in and expand. 

We  expect  to  continue  to  develop  and  distribute  new  services,  expand  existing  services  within  our  current 
platform,  and  expand  and  develop  our  sales  and  marketing  organization.  For  instance,  in  July  2009,  we  expanded 
subscribers’  analytic  capabilities  to  use  our  online  database  to  conduct  in-depth  analysis  and  generate  reports  on 
sales  and  leasing  activity  through  our  acquisition  of  PPR  and  in  October  2009,  we  acquired  Resolve  Technology, 
which enabled us to provide our customers with additional tools for analyzing commercial real estate markets. Any 
future  expansion,  including  expansion  through  acquisitions  and  expansion  internationally,  could  reduce  our 
profitability  and  increase  our  capital  expenditures.  Therefore,  while  we  expect  current  service  offerings  to  remain 
profitable,  driving  overall  earnings  throughout  2011  and  providing  substantial  cash  flow  for  our  business,  it  is 
possible that any new investments could cause us to generate losses and negative cash flow from operations in the 
future. 

Our goal is to provide additional tools that make our research and analytics even more valuable to subscribers.  
For example, we are currently focusing on integration and further development of the PPR and Resolve Technology 
service  offerings.    We  have  launched  an  initiative  to  develop  a  discounted  cash  flow  (DCF)  forecasting  and 
valuation solution that effectively integrates the combined capabilities of CoStar’s market and property information 
and PPR’s analytics and forecasting expertise with Resolve Technology’s real estate investment software expertise.  
In order to implement this initiative, we have incurred, and expect to continue to incur additional costs, including 

28 

  
 
 
 
 
 
 
costs of hiring additional personnel.  While our investments in PPR and Resolve Technology have resulted and may 
continue to result in an increase in expenses, our revenues have also increased as a result of these acquisitions, and 
we have experienced increased cross-selling opportunities among CoStar and the acquired companies. 

COsTAr GrOup 2010 AnnuAL RepoRT

43

in 

the  U.S.  and 

In some cases, the business operations of some of our clients continue to be negatively affected by challenging 
economic  conditions 
in  business  consolidations  and, 
the  world,  resulting  at 
in some circumstances, business failure.  If cancellations, reductions of services and failures to pay continue at the 
current rate or increase, and we are unable to offset the resulting decrease in revenue by increasing sales to new or 
existing customers, our revenues may decline or grow at reduced rates.  Additionally, current economic conditions 
may cause customers to reduce expenses, and customers may be forced to purchase fewer services from us or cancel 
all  services.  We  compete  against  many  other  commercial  real  estate  information,  marketing  and  analytic  service 
providers  for  business.  If  customers  choose  to  cancel  our  services  for  cost-cutting  or  other  reasons,  our  revenue 
could decline.   

times 

There  are  clear  signs  of  improving  conditions  in  the  commercial  real  estate  industry,  including  heightened 
leasing  activity  and  positive  net  absorption  of  office  space,  resulting  from  modest  office-related  job  growth  and 
recent business expansions in the U.S.  The extent and duration of continued improvement of the economy and the 
commercial real estate industry is unknown, as is the extent and duration of any benefits resulting from any of the 
governmental or private sector initiatives designed to strengthen the economy.  Because of these uncertainties and 
any resulting impact on our business, we may not be able to accurately forecast our revenue or earnings.  Based on 
current economic conditions, we believe that the Company is positioned to generate continued, sustained earnings 
from current operations in 2011 and for the foreseeable future. 

Our  financial  reporting  currency  is  the  U.S. dollar.  Changes  in  exchange  rates  can  significantly  affect  our 
reported  results  and  consolidated  trends.  We  believe  that  our  increasing  diversification  beyond  the  U.S.  economy 
through our international businesses benefits our stockholders over the long term. We also believe it is important to 
evaluate  our  operating  results  before  and  after  the  effect  of  currency  changes,  as  it  may  provide  a  more  accurate 
comparison  of  our  results  of  operations  over  historical  periods.  Currency  exchange  rate  volatility  may  continue, 
which may impact (either positively or negatively) our reported financial results and consolidated trends and period-
to-period comparisons of our consolidated operations.  

We currently issue stock options and/or restricted stock to our officers, directors and employees, and as a result 
we record additional compensation expense in our consolidated statements of operations. We plan to continue the 
use of stock-based compensation for our officers, directors and employees, which may include, among other things, 
restricted  stock,  restricted  stock  units  or  stock  option  grants  that  typically  will  require  us  to  record  additional 
compensation expense in our consolidated statements of operations and reduce our net income. 

We recently decided to take advantage of favorable market conditions to lower our long-term occupancy costs 
as a tenant.  As part of our overall strategy to consolidate our London office locations and reduce occupancy costs, 
we  relocated  our  London  offices  and  in  July  2010  entered  into  a  settlement  pursuant  to  which  we  terminated  our 
lease for our former London offices.  In addition, in September 2010, we consolidated our three facilities located in 
the  Boston,  Massachusetts  area,  including  the  facilities  used  by  CoStar,  PPR  and  Resolve  Technology,  into  one 
facility.  We  recorded  a  lease  restructuring  charge  of  approximately  $1.3  million  in  general  and  administrative 
expense  in  the  third  quarter  of  2010  as  a  result  of  the  Boston  office  consolidation.    In  December  2010,  we 
consolidated our New York and Iselin, New Jersey offices into one facility.  The consolidation of these facilities did 
not result in a lease restructuring charge.   

On  February  5,  2010,  we  took  advantage  of  favorable  market  conditions  and  purchased  an  office  building  in 
downtown  Washington,  DC  for  $41.25  million  for  use  as  our  new  headquarters  and  have  since  relocated  to  this 
location.    The  lease  for  our  previous  headquarters  in  Bethesda,  MD  expired  on  October  15,  2010;  therefore,  we 
incurred  overlapping  occupancy  costs  through  the  end  of  the  Bethesda  lease  term  as  we  transitioned  to  our  new 
headquarters.    We  were  able  to  create  value  through  our  occupancy  of  the  building  in  Washington,  DC  and  on 
February 18, 2011 sold the building for aggregate consideration of $101.0 million, $15.0 million of which is being 
held  in  escrow  to  fund  additional  build-out  and  planned  improvements  at  the  building.    As  part  of  the  sale,  we 
entered  into  a  long-term  lease  with  the  buyer  to  lease  back  approximately  88%  of  the  office  space,  where  our 
corporate headquarters will remain.  We expect that the lease-back arrangement will result in additional expense of 
approximately $4.5 million to $5.0 million in 2011.   

29 

  
 
 
 
 
 
 Our  subscription-based  information  services,  consisting  primarily  of  CoStar  Property  Professional,  CoStar 
Tenant, CoStar COMPS Professional, and FOCUS services currently generate more than 94% of our total revenues. 
CoStar  Property  Professional,  CoStar  Tenant,  and  CoStar  COMPS  Professional  are  generally  sold  as  a  suite  of 
similar services and comprise our primary service offering in our U.S. operating segment.  FOCUS is our primary 
service  offering  in  our  International  operating  segment.  The  majority  of  our  contracts  for  our  subscription-based 
information services typically have a minimum term of one year and renew automatically. Upon renewal, many of 
the  subscription  contract  rates  may  change  in  accordance  with  contract  provisions  or  as  a  result  of  contract 
renegotiations. To encourage clients to use our services regularly, we generally charge a fixed monthly amount for 
our  subscription-based  information  services  rather  than  fees  based  on  actual  system  usage.  Contract  rates  are 
generally based on the number of sites, number of users, organization size, the client’s business focus, geography 
and  the  number  of  services  to  which  a  client  subscribes.  Our  subscription  clients  generally  pay  contract  fees  on  a 
monthly basis, but in some cases may pay us on a quarterly or annual basis. We recognize this revenue on a straight-
line  basis  over  the  life  of  the  contract.  Annual  and  quarterly  advance  payments  result  in  deferred  revenue, 
substantially reducing the working capital requirements generated by accounts receivable. 

For  the  twelve  months  ended  December  31,  2010  and  2009,  our  contract  renewal  rate  for  subscription-based 
services was approximately 90% and 85%, respectively, and therefore our cancellation rate was approximately 10% 
and 15%, respectively, for the same periods of time.  Our contract renewal rate is a quantitative measurement that is 
typically closely correlated with our revenue results. As a result, management also believes that the rate may be a 
reliable  indicator  of  short-term  and  long-term  performance.   Our  trailing  twelve-month  contract  renewal  rate  may 
decline  if  negative  economic  conditions  lead  to  greater  business  failures  and/or  consolidations  among  our  clients, 
further reductions in customer spending, or decreases in our customer base. 

Application of Critical Accounting Policies and Estimates 

The  preparation  of  financial  statements  and  related  disclosures  in  conformity  with  U.S.  generally  accepted 
accounting  principles (“GAAP”) requires management to make  estimates and  assumptions  that  affect  the  reported 
amounts  of  assets  and  liabilities,  the  disclosure  of  contingent  assets  and  liabilities  at  the  date  of  the  financial 
statements  and  revenues  and  expenses  during  the  period  reported.  The  following  accounting  policies  involve  a 
“critical  accounting  estimate”  because  they  are  particularly  dependent  on  estimates  and  assumptions  made  by 
management about matters that are highly uncertain at the time the accounting estimates are made. In addition, while 
we have used our best estimates based on facts and circumstances available to us at the time, different acceptable 
assumptions would yield different results. Changes in the accounting estimates we use are reasonably likely to occur 
from period to period, which may have a material impact on the presentation of our financial condition and results of 
operations. We review these estimates and assumptions periodically and reflect the effects of revisions in the period 
that they are determined to be necessary. 

Fair Value of Auction Rate Securities 

Fair value is defined as the price that would be received in the sale of an asset or paid to transfer a liability in an 
orderly transaction between market participants.  There is a three-tier fair value hierarchy, which categorizes assets 
and liabilities by the inputs used in measuring fair value.  These tiers include: Level 1, defined as observable inputs 
such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are 
either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data 
exists,  therefore  requiring  an  entity  to  develop  its  own  assumptions.    Our  Level  3  assets  consist  of  auction  rate 
securities (“ARS”), whose underlying assets are primarily student loan securities supported by guarantees from the 
Federal Family Education Loan Program (“FFELP”) of the U.S. Department of Education. 

Our ARS investments are not currently trading and therefore do not currently have a readily determinable market 
value.  Accordingly,  the  estimated  fair  value  of  the  ARS  no  longer  approximates  par  value.  We  have  used  a 
discounted  cash  flow  model  to  determine  the  estimated  fair  value  of  our  investment  in  ARS  as  of  December  31, 
2010.  The assumptions used in preparing the discounted cash flow model include estimates for interest rates, credit 
spreads, timing and amount of cash flows, liquidity risk premiums, expected holding periods and default risk of the 
ARS.  Based on this assessment of fair value, as of December 31, 2010, we determined there was a decline in the 
fair  value  of  our  ARS  investments  of  approximately  $3.0  million.  The  decline  was  deemed  to  be  a  temporary 
impairment and recorded as an unrealized loss in accumulated other comprehensive loss in stockholders’ equity.  If 
the issuers of these ARS are unable to successfully close future auctions and/or their credit ratings deteriorate, we 
may  be  required  to  record  additional  unrealized  losses  in  accumulated  other  comprehensive  loss  or  an  other-than-

30 

 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

45

temporary impairment charge to earnings on these investments, which would reduce our profitability and adversely 
affect our financial position. 

We have not made any material changes in the accounting methodology used to determine the fair value of the 
ARS.  We do not expect any material changes in the near term to the underlying assumptions used to determine the 
unobservable inputs used to calculate the fair value of the ARS as of December 31, 2010.  However, if changes in 
these  assumptions  occur,  and,  should  those  changes  be  significant,  we  may  be  exposed  to  additional  unrealized 
losses in accumulated other comprehensive loss or an other-than-temporary impairment charge to earnings on these 
investments.  

Fair Value of Deferred Consideration 

Our  Level  3  liabilities  consist  of  a  $3.2  million  liability  as  of  December  31,  2010  for  deferred  consideration 
related to the October 19, 2009 acquisition of Resolve Technology. The deferred consideration is for (i) a potential 
deferred cash payment two years after closing based on the incremental growth of Resolve Technology’s revenue, 
and (ii) other potential deferred cash payments for successful completion of operational and sales milestones during 
the period from closing through October 31, 2013, which period may be extended by the parties to a date no later 
than December 31, 2014. 

We  used  a  discounted  cash  flow  model  to  determine  the  estimated  fair  value  of  our  Level  3  liabilities  as  of 
December  31,  2010.  The  significant  assumptions  used  in  preparing  the  discounted  cash  flow  model  include  the 
discount rate, estimates for future incremental revenue growth and probabilities for completion of operational and 
sales milestones. 

We have not made any material changes in the accounting methodology used to determine the fair value of the 
deferred consideration.  We do not expect any material changes in the near term to the underlying assumptions used 
to determine the unobservable inputs used to calculate the fair value of the deferred consideration as of December 
31,  2010.    However,  if  changes  in  these  assumptions  occur,  and,  should  those  changes  be  significant,  we  may  be 
required to recognize additional liabilities related to this deferred consideration. 

Stock-Based Compensation 

We account for equity instruments issued in exchange for employee services using a fair-value based method and 
we recognize the fair value of such equity instruments as an expense in the consolidated statements of operations.  
We  estimated  the  fair  value  of  each  option  granted  on  the  date  of  grant  using  the  Black-Scholes  option-pricing 
model, which requires us to estimate the dividend yield, expected volatility, risk-free interest rate and expected life 
of  the  stock  option.    These  assumptions  and  the  estimation  of  expected  forfeitures  are  based  on  multiple  factors, 
including  historical  employee  behavior  patterns  of  exercising  options  and  post-employment  termination  behavior, 
expected future employee option exercise patterns, and the historical volatility of the Company’s stock price. 

We do not expect any material changes in the near term to the underlying assumptions used to calculate stock-
based  compensation  expense  for  the  twelve  months  ended  December  31,  2010.    However,  if  changes  in  these 
assumptions occur, and, should those changes be significant, they could have a material impact on our stock-based 
compensation expense. 

Valuation of Long-Lived and Intangible Assets and Goodwill 

We  assess  the  impairment  of  long-lived  assets,  identifiable  intangibles  and  goodwill  whenever  events  or 
changes in circumstances indicate that the carrying value may not be recoverable. Judgments made by management 
relate to the expected useful lives of long-lived assets and our ability to realize any undiscounted cash flows of the 
carrying  amounts  of  such  assets.    The  accuracy  of  these  judgments  may  be  adversely  affected  by  several  factors, 
including the factors listed below: 

•  Significant underperformance relative to historical or projected future operating results;  
•  Significant changes in the manner of our use of the acquired assets or the strategy for our overall business; 
•  Significant negative industry or economic trends; or  
•  Significant decline in our market capitalization relative to net book value for a sustained period.  

31 

 
 
 
 
 
 
 
 
 
 
 
 
When we determine that the carrying value of long-lived and identifiable intangible assets may not be recovered 

based upon the existence of one or more of the above indicators, we test for impairment. 

Goodwill  and  identifiable  intangible  assets  that  are  not  subject  to  amortization  are  tested  annually  for 
impairment  by  each  reporting  unit  on  October  1  of  each  year  and  are  also  tested  for  impairment  more  frequently 
based  upon  the  existence  of  one  or  more  of  the  above  indicators.    We  consider  our  operating  segments,  U.S.  and 
International, as our reporting units under FASB authoritative guidance for consideration of potential impairment of 
goodwill.  

The  goodwill  impairment  test  is  a  two-step  process.    The  first  step  is  to  determine  the  fair  value  of  each 
reporting unit. We estimate the fair value of each reporting unit based on a projected discounted cash flow model 
that  includes  significant  assumptions  and  estimates  including  our  future  financial  performance  and  a  weighted 
average  cost  of  capital.  The  fair  value  of  each  reporting  unit  is  compared  to  the  carrying  amount  of  the  reporting 
unit.  If  the  carrying  value  of  the  reporting  unit  exceeds  the  fair  value,  then  the  second  step  of  the  process  is 
performed to measure the impairment loss.  We measure impairment loss based on a projected discounted cash flow 
method  using  a  discount  rate  determined  by  our  management  to  be  commensurate  with  the  risk  in  our  current 
business model.  As of October 1, 2010, the date of our most recent impairment analysis, the estimated fair value of 
each  of  our  reporting  units  substantially  exceeded  the  carrying  value  of  our  reporting  units.  There  have  been  no 
events or changes in circumstances since the date of our impairment analysis on October 1, 2010 that would indicate 
that the carrying value of each reporting unit may not be recoverable. 

Accounting for Income Taxes 

As  part  of  the  process  of  preparing  our  consolidated  financial  statements,  we  are  required  to  estimate  our 
income taxes in each of the jurisdictions in which we operate. This process requires us to estimate our actual current 
tax  exposure  and  assess  the  temporary  differences  resulting  from  differing  treatment  of  items,  such  as  deferred 
revenue  or  deductibility  of  certain  intangible  assets,  for  tax  and  accounting  purposes.  These  differences  result  in 
deferred  tax  assets  and  liabilities,  which  are  included  within  our  consolidated  balance  sheets.  We  must  then  also 
assess the likelihood that our deferred tax assets will be recovered from future taxable income, and, to the extent we 
believe that it is more-likely-than not that some portion or all of our deferred tax assets will not be realized, we must 
establish  a  valuation  allowance.    To  the  extent  we  establish  a  valuation  allowance  or  change  the  allowance  in  a 
period,  we  must  reflect  the  corresponding  increase  or  decrease  within  the  tax  provision  in  the  consolidated 
statements of operations.  

Non-GAAP Financial Measures 

We prepare and publicly release quarterly unaudited financial statements prepared in accordance with GAAP. 
We also disclose and discuss certain non-GAAP financial measures in our public releases, investor conference calls 
and filings with the Securities and Exchange Commission. The non-GAAP financial measures that we may disclose 
include  EBITDA,  adjusted  EBITDA,  non-GAAP  net  income  and  non-GAAP  net  income  per  diluted  share.  
EBITDA is our net income (loss) before interest, income taxes, depreciation and amortization. We typically disclose 
EBITDA on a consolidated and an operating segment basis in our earnings releases, investor conference calls and 
filings  with  the  Securities  and  Exchange  Commission.  Adjusted  EBITDA  is  different  from  EBITDA  because  we 
further  adjust  EBITDA  for  stock-based  compensation  expense,  acquisition  related  costs,  restructuring  costs, 
headquarters acquisition and transition related costs and settlements and impairments incurred outside our ordinary 
course of business.  Non-GAAP net income and non-GAAP net income per diluted share are similarly adjusted for 
stock-based  compensation  expense,  acquisition  related  costs,  restructuring  costs,  headquarters  acquisition  and 
transition related costs and settlement and impairment costs incurred outside our ordinary course of business as well 
as purchase amortization and other related costs.  We may disclose adjusted EBITDA, non-GAAP net income and 
non-GAAP net income per diluted share on a consolidated basis in our earnings releases, investor conference calls 
and filings with the Securities and Exchange Commission. The non-GAAP financial measures that we use may not 
be  comparable  to  similarly  titled  measures  reported  by  other  companies.  Also,  in  the  future,  we  may  disclose 
different non-GAAP financial measures in order to help our investors more meaningfully evaluate and compare our 
results of operations to our previously reported results of operations or to those of other companies in our industry. 

We view EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share as 
operating performance measures and as such we believe that the most directly comparable GAAP financial measure 
is net income (loss). In calculating EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income 

32 

 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

47

per  diluted  share,  we  exclude  from  net  income  (loss)  the  financial  items  that  we  believe  should  be  separately 
identified to provide additional analysis of the financial components of the day-to-day operation of our business. We 
have  outlined  below  the  type  and  scope  of  these  exclusions  and  the  material  limitations  on  the  use  of  these  non-
GAAP financial measures as a result of these exclusions. EBITDA, adjusted EBITDA, non-GAAP net income and 
non-GAAP  net  income  per diluted  share  are  not  measurements  of  financial  performance  under  GAAP  and  should 
not  be  considered  as  a  measure  of  liquidity,  as  an  alternative  to  net  income  (loss)  or  as  an  indicator  of  any  other 
measure of performance derived in accordance with GAAP. Investors and potential investors in our securities should 
not rely on EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share as a 
substitute for any GAAP financial measure, including net income (loss). In addition, we urge investors and potential 
investors  in  our  securities  to  carefully  review  the  GAAP  financial  information  included  as  part  of  our  Quarterly 
Reports on Form 10-Q that are filed with the Securities and Exchange Commission, as well as our quarterly earnings 
releases,  and  compare  the  GAAP  financial  information  with  our  EBITDA,  adjusted  EBITDA,  non-GAAP  net 
income and non-GAAP net income per diluted share. 

EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share may be used 
by management to internally measure our operating and management performance and may be used by investors as 
supplemental  financial  measures  to  evaluate  the  performance  of  our  business.    We  believe  that  these  non-GAAP 
measures, when viewed with our GAAP results and the accompanying reconciliation, provide additional information 
that is useful to understand the factors and trends affecting our business. We have spent more than 23 years building 
our  database  of  commercial  real  estate  information  and  expanding  our  markets  and  services  partially  through 
acquisitions of complementary businesses. Due to the expansion of our information, marketing and analytic services, 
which  included  acquisitions,  our  net  income  (loss)  has  included  significant  charges  for  purchase  amortization, 
depreciation  and  other  amortization,  acquisition  costs  and  restructuring  costs.  EBITDA,  adjusted  EBITDA,  non-
GAAP  net  income  and  non-GAAP  net  income  per  diluted  share  exclude  these  charges  and  provide  meaningful 
information  about  the  operating  performance  of  our  business,  apart  from  charges  for  purchase  amortization, 
depreciation  and  other  amortization,  acquisition  costs,  restructuring  costs  and  settlement  and  impairment  costs 
incurred outside our ordinary course of business. We believe the disclosure of these non-GAAP measures can help 
investors  meaningfully  evaluate  and  compare  our  performance  from  quarter  to  quarter  and  from  year  to  year.  We 
also believe these non-GAAP measures are measures of our ongoing operating performance because the isolation of 
non-cash charges, such as amortization and depreciation, and other items, such as interest, income taxes, stock-based 
compensation  expenses,  acquisition  costs,  headquarters  acquisition  and  transition  related  costs,  restructuring  costs 
and  settlement  and  impairment  costs  incurred  outside  our  ordinary  course  of  business,  provides  additional 
information  about  our  cost  structure,  and,  over  time,  helps  track  our  operating  progress.  In  addition,  investors, 
securities analysts and others have regularly relied on EBITDA and may rely on adjusted EBITDA, non-GAAP net 
income  or  non-GAAP  net  income  per  diluted  share  to  provide  a  financial  measure  by  which  to  compare  our 
operating performance against that of other companies in our industry.   

Set  forth  below  are  descriptions  of  the  financial  items  that  have  been  excluded  from  our  net  income  (loss)  to 
calculate EBITDA and the material limitations associated with using this non-GAAP financial measure as compared 
to net income (loss): 

• 

• 

Purchase amortization in cost of revenues may be useful for investors to consider because it represents the 
use  of  our  acquired  database  technology,  which  is  one  of  the  sources  of  information  for  our  database  of 
commercial  real  estate  information.  We  do  not  believe  these  charges  necessarily  reflect  the  current  and 
ongoing cash charges related to our operating cost structure. 

Purchase amortization in operating expenses may be useful for investors to consider because it represents 
the  estimated  attrition  of  our  acquired  customer  base  and  the  diminishing  value  of  any  acquired  trade 
names. We do not believe these charges necessarily reflect the current and ongoing cash charges related to 
our operating cost structure. 

•  Depreciation  and  other  amortization  may  be  useful  for  investors  to  consider  because  they  generally 
represent the wear and tear on our property and equipment used in our operations. We do not believe these 
charges necessarily reflect the current and ongoing cash charges related to our operating cost structure. 

•  The amount of net interest income we generate may be useful for investors to consider and may result in 
current cash inflows or outflows. However, we do not consider the amount of net interest income to be a 
representative component of the day-to-day operating performance of our business. 

33 

 
 
 
 
 
 
• 

Income  tax  expense  (benefit) may  be  useful  for  investors  to  consider  because  it  generally  represents  the 
taxes which may be payable for the period and the change in deferred income taxes during the period and 
may reduce the amount of funds otherwise available for use in our business.  However, we do not consider 
the amount of income tax expense (benefit) to be a representative component of the day-to-day operating 
performance of our business.   

Set  forth  below  are  descriptions  of  the  financial  items  that  have  been  excluded  from  our  net  income  (loss)  to 
calculate adjusted EBITDA and the material limitations associated with using this non-GAAP financial measure as 
compared to net income (loss): 

• 

• 

Purchase amortization in cost of revenues, purchase amortization in operating expenses, depreciation and 
other  amortization,  interest  income,  net,  and  income  tax  expense  (benefit)  as  previously  described  above 
with respect to the calculation of EBITDA.   

Stock-based compensation expense may be useful for investors to consider because it represents a portion 
of  the  compensation  of  our  employees  and  executives.    Determining  the  fair  value  of  the  stock-based 
instruments involves a high degree of judgment and estimation and the expenses recorded may bear little 
resemblance to the actual value realized upon the future exercise or termination of the related stock-based 
awards.  Therefore,  we  believe  it  is  useful  to  exclude  stock-based  compensation  in  order  to  better 
understand the long-term performance of our core business.   

•  The  amount  of  acquisition  related  costs  incurred  may  be  useful  for  investors  to  consider  because  they 
generally represent professional service fees and direct expenses related to the acquisition.  Because we do 
not acquire businesses on a predictable cycle we do not consider the amount of acquisition related costs to 
be a representative component of the day-to-day operating performance of our business.   

•  The amount of restructuring costs incurred may be useful for investors to consider because they generally 
represent costs incurred in connection with a change in the makeup of our properties or personnel.  We do 
not consider the amount of restructuring related costs to be a representative component of the day-to-day 
operating performance of our business.   

•  The amount of headquarters acquisition and transition related costs incurred may be useful for investors to 
consider because they generally represent the overlapping rent and building carrying costs, legal costs and 
other related costs incurred to relocate our headquarters. We do not believe these charges necessarily reflect 
the current and ongoing charges related to our operating cost structure. 

•  The amount of material settlement and impairment costs incurred outside of our ordinary course of business 
may be useful for investors to consider because they generally represent gains or losses from the settlement 
of  litigation  matters.  We  do  not  believe  these  charges  necessarily  reflect  the  current  and  ongoing  cash 
charges related to our operating cost structure. 

The financial items that have been excluded from our net income (loss) to calculate non-GAAP net income and 
non-GAAP net income per diluted share are stock-based compensation, acquisition related costs, restructuring costs, 
headquarter  acquisition  and  transition  related  costs  and  settlement  and  impairment  costs  incurred  outside  our 
ordinary course of business.  These items are discussed above with respect to the calculation of adjusted EBITDA 
along  with  the  material  limitations  associated  with  using  this  non-GAAP  financial  measure  as  compared  to  net 
income (loss).  We subtract an assumed provision for income taxes to calculate non-GAAP net income.  We assume 
a 40% tax rate in order to approximate our long-term effective corporate tax rate. 

Non-GAAP  net  income  per  diluted  share  is  a  non-GAAP  financial  measure  that  represents  non-GAAP  net 
income  divided  by  the  number  of  diluted  shares  outstanding  for  the  period  used  in  the  calculation  of  GAAP  net 
income per diluted share. 

Management  compensates  for  the  above-described  limitations  of  using  non-GAAP  measures  by  using  a  non-
GAAP  measure  only  to  supplement  our  GAAP  results  and  to  provide  additional  information  that  is  useful  to 
understand the factors and trends affecting our business. 

34 

 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

49

The following table shows our EBITDA reconciled to our net income and our net cash flows from operating, 

investing and financing activities for the indicated periods (in thousands): 

Year Ended December 31, 

2008 
Net income .........................................................................................  $  24,623 
2,284 
Purchase amortization in cost of revenues.........................................   
Purchase amortization in operating expenses ....................................   
4,880 
Depreciation and other amortization..................................................   
9,637 
Interest income, net............................................................................   
(4,914) 
Income tax expense, net.....................................................................    20,079 
EBITDA.............................................................................................  $  56,589 

2009 

2010 

  $  18,693 
2,389 
3,412 
8,875 
(1,253) 
14,395 
  $  46,511 

  $  13,289 
1,471 
2,305 
9,873 
(735) 
  10,221 
  $  36,424 

Net cash flows provided by (used in) 

Operating activities ........................................................................  $  40,908 
Investing activities..........................................................................  $  52,430 
Financing activities ........................................................................  $  11,475 

  $  38,445 
4,532 
  $ 
2,172 
  $ 

  $  39,269 
  $  (40,504) 
2,042 
  $ 

Consolidated Results of Operations 

The  following  table  provides  our  selected  consolidated  results  of  operations  for  the  indicated  periods  (in 

thousands of dollars and as a percentage of total revenue): 

Revenues ................................................. $  212,428 
Cost of revenues......................................    73,408 
Gross margin...........................................    139,020 
Operating expenses: 

Selling and marketing..........................    41,705 
Software development.........................    12,759 
General and administrative..................    39,888 
4,880 
Purchase amortization .........................   
Total operating expenses.........................    99,232 
Income from operations ..........................    39,788 
Interest and other income, net.................   
4,914 
Income before income taxes ...................    44,702 
Income tax expense, net..........................    20,079 
Net income  .............................................  $  24,623 

2008 

Year Ended December 31, 
2009 

2010 

  100.0  %    $  209,659 
  73,714 
  34.6 
  135,945 
  65.4 

  100.0  %   $  226,260 
  83,599 
  35.2 
  142,661 
  64.8 

  100.0  % 
  36.9 
  63.1 

  19.6   
6.0   
  18.8   
2.3   
  46.7   
  18.7   
2.3   
  21.0   
9.5 
  11.6  % 

  42,508 
  13,942 
       44,248 
3,412 
  104,110 
  31,835 
1,253 
  33,088 
  14,395 
  $  18,693 

  52,455 
  20.3 
  17,350 
6.6 
           47,776 
  21.1 
2,305 
1.6 
  119,886 
  49.7 
  22,775 
  15.2 
735 
0.6 
  23,510 
  15.8 
6.9 
  10,221 
8.9  %   $  13,289 

  23.2 
7.7 
  21.1 
1.0 
  53.0 
  10.1 
0.3 
  10.4 
4.5 
5.9  % 

Comparison of Year Ended December 31, 2010 and Year Ended December 31, 2009 

Revenues. Revenues increased to $226.3 million in 2010, from $209.7 million in 2009. The increase in revenues 
of approximately $16.6 million is primarily due to additional revenue from our July 2009 acquisition of PPR. Our 
subscription-based  information  services  consist  primarily  of  CoStar  Property  Professional,  CoStar  Tenant,  CoStar 
COMPS  Professional,  FOCUS  services  and  Propex  services.  As  of  December  31,  2010,  our  subscription-based 
information services represented more than 94% of our total revenues.  

Gross Margin. Gross margin increased to $142.7 million in 2010, from $135.9 million in 2009. The increase in 
the amount of gross margin was principally due to a $16.6 million increase in revenue partially offset by an increase 
in cost of revenues.  The gross margin percentage decreased to 63.1% in 2010, from 64.8% in 2009.  The decrease in 
the  percentage  of  gross  margin  was  principally  due  to  an  increase  in  the  cost  of  revenues.    Cost  of  revenues 

35 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
   
 
   
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
   
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
 
 
increased to $83.6 million in 2010, from $73.7 million in 2009.  The increase in cost of revenues was principally due 
to additional cost of revenues of approximately $7.4 million included as a result of our July 2009 acquisition of PPR 
and our October 2009 acquisition of Resolve Technology.  

Selling  and  Marketing  Expenses.  Selling  and  marketing  expenses  increased  to  $52.5  million  in  2010,  from 
$42.5  million  in  2009,  and  increased  as  a  percentage  of  revenues  to  23.2%  in  2010,  from  20.3%  in  2009.  The 
increase  in  the  amount  and  percentage  of  selling  and  marketing  expenses  was  primarily  due  to  increased  costs  of 
approximately  $6.1  million  due  to  increased  sales  personnel  costs,  as  well  as  additional  selling  and  marketing 
expenses of approximately $1.7 million included as a result of our July 2009 acquisition of PPR and our October 
2009 acquisition of Resolve Technology.  

Software  Development  Expenses.  Software  development  expenses  increased  to  $17.4  million  in  2010,  from 
$13.9 million in 2009, and increased as a percentage of revenues to 7.7% in 2010, from 6.6% in 2009.  The increase 
in  the  amount  and  percentage  of  software  development  expense  was  primarily  due  to  additional  software 
development expenses included as a result of our July 2009 acquisition of PPR and our October 2009 acquisition of 
Resolve Technology.  

General and Administrative Expenses. General and administrative expenses increased to $47.8 million in 2010, 
from  $44.2  million  in  2009,  and  remained  relatively  constant  as  a  percentage  of  revenues  at  21.1%  in  2010  and 
2009.  The  increase  in  the  amount  of  general  and  administrative  expenses  was  principally  due  to  $2.8  million 
recorded  for  the  settlement  of  two  litigation  matters  in  June  2010,  the  2010  lease  restructuring  charge  of 
approximately  $1.3  million,  and  additional  general  and  administrative  expense  of  approximately  $2.0  million 
included as a result of our July 2009 acquisition of PPR and our October 2009 acquisition of Resolve Technology, 
partially offset by a decrease in bad debt expense of approximately $3.0 million. 

Purchase  Amortization.  Purchase  amortization  decreased  to  $2.3  million  in  2010,  from  $3.4  million  in  2009, 
and  decreased  as  a  percentage  of  revenues  to  1.0%  in  2010,  from  1.6%  in  2009.    The  decrease  in  purchase 
amortization expense is due to the completion of amortization for certain identifiable intangible assets in 2010. 

Interest and Other Income, Net. Interest and other income, net decreased to  approximately $700,000 in 2010, 

from $1.3 million in 2009, primarily due to lower short-term investment balances. 

Income Tax Expense, Net. Income tax expense, net decreased to $10.2 million in 2010, from $14.4 million in 

2009. This decrease was primarily due to lower income before income taxes. 

Comparison of Business Segment Results for Year Ended December 31, 2010 and Year Ended December 31, 
2009 

We manage our business geographically in two operating segments, with our primary areas of measurement and 
decision-making  being  the  U.S.  and  International,  which  includes  the  U.K.  and  France.  Management  relies  on  an 
internal  management  reporting  process  that  provides  revenue  and  operating  segment  EBITDA,  which  is  our  net 
income before interest, income taxes, depreciation and  amortization. Management believes that  operating segment 
EBITDA is an appropriate measure for evaluating the operational performance of our operating segments. EBITDA 
is  used  by  management  to  internally  measure  our  operating  and  management  performance  and  to  evaluate  the 
performance of our business. However, this measure should be considered in addition to, not as a substitute for or 
superior to, income from operations or other measures of financial performance prepared in accordance with GAAP.  

Segment  Revenues.  CoStar  Property  Professional,  CoStar  Tenant,  and  CoStar  COMPS  Professional  are 
generally sold as a suite of similar services and comprise our primary service offering in our U.S. operating segment. 
U.S. revenues increased to $208.5 million from $191.6 million for the years ended December 31, 2010 and 2009, 
respectively.  This  increase  in  U.S.  revenue  was  primarily  due  to  additional  revenues  as  a  result  of  our  July  2009 
acquisition of PPR.  FOCUS is our primary service offering in our International operating segment.  International 
revenues decreased approximately $300,000 primarily due to foreign currency fluctuations, offset by intersegment 
revenues of approximately $1.3 million attributable to services performed by Property and Portfolio Research Ltd. 
for  PPR.    PPR  and  Property  and  Portfolio  Research  Ltd.  were  acquired  in  July  2009.    Intersegment  revenues  are 
eliminated from total revenues. 

36 

 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

51

Segment EBITDA. U.S. EBITDA decreased to $39.6 million from $47.7 million for the years ended December 
31, 2010 and 2009, respectively. The decrease in U.S. EBITDA was due primarily to additional personnel cost of 
approximately $8.1 million, increased legal settlement charges of approximately $800,000, and a lease restructuring 
charge  of  approximately  $1.3 million  related  to  the  consolidation  of  our  three  facilities  located  in  Boston, 
Massachusetts,  partially  offset  by  a  decrease  in  bad  debt  expense  of  approximately  $2.2  million.  International 
EBITDA increased to a loss of $3.2 million for the year ended December 31, 2010 from a $1.2 million loss for the 
year  ended  December  31,  2009.  This  increased  loss  was  primarily  due  to  approximately  $2.0  million  paid  in 
connection  with  the  settlement  of  our  litigation  with  Nokia  U.K.  Limited.    International  EBITDA  includes  a 
corporate  allocation  of  approximately  $400,000  and  $500,000  for  the  years  ended  December  31,  2010  and  2009, 
respectively.  The  corporate  allocation  represents  costs  incurred  for  U.S.  employees  involved  in  international 
management and expansion activities. 

Comparison of Year Ended December 31, 2009 and Year Ended December 31, 2008 

Revenues.  Revenues  decreased  to  $209.7  million  in  2009,  from  $212.4  million  in  2008.  Revenues  from 
customers in our International operations decreased $4.3 million primarily due to foreign currency fluctuations. The 
decrease  in  International  revenues  was  partially  offset  by  an  increase  in  U.S.  revenues  of  approximately  $1.5 
million.  The increase in U.S. revenues is primarily due to additional revenue of approximately $8.5 million from 
our July 2009 acquisition of PPR partially offset by decreased sales resulting from a difficult commercial real estate 
and  economic  environment.  Our  subscription-based  information  services  consist  primarily  of  CoStar  Property 
Professional, CoStar Tenant, CoStar COMPS Professional, FOCUS services and Propex services. As of December 
31, 2009, our subscription-based information services represented more than 95% of our total revenues.  

Gross  Margin.  Gross  margin  decreased  to  $135.9  million  in  2009,  from  $139.0  million  in  2008.  The  gross 
margin percentage decreased to 64.8% in 2009, from 65.4% in 2008. The decrease in the amount and percentage of 
gross margin was principally due to a $2.8 million decrease in revenue in 2009.  

Selling  and  Marketing  Expenses.  Selling  and  marketing  expenses  increased  to  $42.5  million  in  2009,  from 
$41.7  million  in  2008,  and  increased  as  a  percentage  of  revenues  to  20.3%  in  2009,  from  19.6%  in  2008.  The 
increase in the amount and percentage of selling and marketing expenses was primarily due to additional selling and 
marketing  expenses  of  approximately  $1.7  million  incurred  by  PPR  and  included  as  a  result  of  our  July  2009 
acquisition  of  PPR.    The  increase  was  offset  by  an  approximately  $900,000  decrease  due  to  foreign  currency 
fluctuations. 

Software  Development  Expenses.  Software  development  expenses  increased  to  $13.9  million  in  2009,  from 
$12.8 million in 2008, and increased as a percentage of revenues to 6.6% in 2009, from 6.0% in 2008.  The  increase 
in  the  amount  and  percentage  of  software  development  expenses  was  due  to  additional  software  development 
expenses of approximately $600,000 incurred by PPR and included as a result of our July 2009 acquisition of PPR 
as  well  as  additional  development  expenses  of  approximately  $400,000  incurred  by  Resolve  Technology,  and 
included as a result of our October 2009 acquisition of Resolve Technology.  

General and Administrative Expenses. General and administrative expenses increased to $44.2 million in 2009, 
from $39.9 million in 2008, and increased as a percentage of revenues to 21.1% in 2009, from 18.8% in 2008. The 
increase in the amount and percentage of general and administrative expenses was principally a result of an increase 
of  acquisition  and  deal  related  costs  of  approximately  $700,000,  an  increase  in  legal  fees  of  $2.0  million  and 
additional  general  and  administrative  expenses  of  approximately  $1.1  million  incurred  by  PPR  and  included  as  a 
result of our July 2009 acquisition of PPR. 

Purchase  Amortization.  Purchase  amortization  decreased  to  $3.4  million  in  2009,  from  $4.9  million  in  2008, 
and  decreased  as  a  percentage  of  revenues  to  1.6%  in  2009,  from  2.3%  in  2008.    The  decrease  in  purchase 
amortization expense is due to the completion of amortization for certain identifiable intangible assets in 2009. 

Interest  and  Other  Income,  Net.  Interest  and  other  income,  net  decreased  to  $1.3  million  in  2009,  from  $4.9 
million in 2008. Interest and other income, net decreased due to lower average interest rates in 2009 compared to 
2008. 

Income Tax Expense, Net. Income tax expense, net decreased to $14.4 million in 2009, from $20.1 million in 

2008. This decrease was due to lower income before income taxes as a result of our decreased profitability. 

37 

 
 
 
 
 
 
 
 
 
Comparison of Business Segment Results for Year Ended December 31, 2009 and Year Ended December 31, 
2008 

We manage our business geographically in two operating segments, with our primary areas of measurement and 
decision-making  being  the  U.S.  and  International,  which  includes  the  U.K.  and  France.  Management  relies  on  an 
internal  management  reporting  process  that  provides  operating  segment  revenue  and  EBITDA,  which  is  our  net 
income before interest, income taxes, depreciation and amortization. Management believes that  operating segment 
EBITDA is an appropriate measure for evaluating the operational performance of our segments. EBITDA is used by 
management to internally measure our operating and management performance and to evaluate the performance of 
our  business.  However,  this  measure  should  be  considered  in  addition  to,  not  as  a  substitute  for  or  superior  to, 
income from operations or other measures of financial performance prepared in accordance with GAAP.  

Segment  Revenues.  CoStar  Property  Professional,  CoStar  Tenant,  and  CoStar  COMPS  Professional  are 
generally sold as a suite of similar services and comprise our primary service offering in our U.S. operating segment. 
U.S. revenues increased to $191.6 million from $190.1 million for the years ended December 31, 2009 and 2008, 
respectively. This increase in U.S. revenue is due to additional revenues of approximately $8.5 million included as a 
result  of  our  July  2009  acquisition  of  PPR,  partially  offset  by  a  decrease  of  approximately  $7.0  million  in  U.S. 
revenues  due  to  decreased  sales  resulting  from  a  difficult  commercial  real  estate  and  economic  environment. 
FOCUS  is  our  primary  service  offering  in  our  International  operating  segment.    International  revenues  decreased 
approximately $4.3 million primarily due to foreign currency fluctuations, partially offset by intersegment revenues 
of  approximately  $900,000  attributable  to  services  performed  by  Property  and  Portfolio  Research  Ltd.  for  PPR.  
Intersegment revenues are eliminated from total revenues. 

Segment EBITDA. U.S. EBITDA decreased to $47.7 million from $58.8 million for the years ended December 
31, 2009 and 2008, respectively. The decrease in U.S. EBITDA was due primarily to additional costs incurred by 
PPR, which we acquired in July of 2009 and increased legal fees. International EBITDA decreased to a loss of $1.2 
million for the year ended December 31, 2009 from a $2.2 million loss for the year ended December 31, 2008. This 
decreased loss is primarily due to a lower corporate allocation in 2009 as compared to 2008. International EBITDA 
includes a corporate allocation of approximately $500,000 and $1.1 million for the years ended December 31, 2009 
and  2008,  respectively.  The  corporate  allocation  represents  costs  incurred  for  U.S.  employees  involved  in 
international management and expansion activities. 

Consolidated Quarterly Results of Operations 

The  following  tables  summarize  our  consolidated  results  of  operations  on  a  quarterly  basis  for  the  indicated 

periods (in thousands, except per share amounts, and as a percentage of total revenues): 

2009 

2010 

  Mar. 31   

Revenues ..........................  $  51,370 
  16,894 
Cost of revenues............... 
  34,476 
Gross margin.................... 
  23,735 
Operating expenses .......... 
Income from operations ... 
  10,741 
Interest and other income, 
net ................................ 

442 

Jun. 30 
  $  50,064 
  16,744 
  33,320 
  25,129 
8,191 

Sep. 30 
$  53,590 
  19,149 
  34,441 
  27,490 
6,951 

  Dec. 31 
  $  54,635 
  20,927 
  33,708 
  27,756 
5,952 

  Mar. 31 
  $  55,093 
  21,200 
  33,893 
  28,791 
5,102 

Jun. 30 

Sep. 30 
  $  55,838    $  57,144 
  20,762 
  36,382 
  30,247 
6,135 

20,360   
35,478   
30,987   
4,491   

  Dec. 31 
  $  58,185 
  21,277 
  36,908 
  29,861 
7,047 

322 

263 

226 

238 

196   

156 

145 

Income before income 

taxes............................. 
Income tax expense, net... 
Net income  ......................  $ 
Net income per share − 

11,183 
5,077 
6,106 

     8,513 
3,897 
4,616 

  $ 

7,214 
2,889 
$  4,325 

  $ 

6,178 
2,532 
3,646 

  $ 

5,340 
2,451 
2,889 

basic............................. 

$  

0.31 

$ 

0.24 

$ 

0.22 

$ 

0.18 

$ 

0.14 

Net income per share − 

diluted .......................... 

$ 

0.31 

$ 

0.24 

$ 

0.22 

$ 

0.18 

$ 

0.14 

6,291 
4,687   
1,436   
2,909 
3,251    $  3,382 

  $ 

7,192 
3,425 
3,767 

0.16 

$ 

0.17 

$ 

0.18 

0.16 

$ 

0.16 

$ 

0.18 

  $ 

$ 

$ 

38 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

53

2009 

2010 

  Dec. 31 

  Mar. 31 

Jun. 30 

  Dec. 31 

  Mar. 31 
  100.0  %  
32.9 
67.1 
46.2 
20.9 

Jun. 30 
  100.0  %  
33.4 
66.6 
50.2 
16.4 

Sep. 30 
  100.0  %  
35.7 
64.3 
51.3 
13.0 

  100.0  %  
38.3 
61.7 
50.8 
10.9 

  100.0  %  
38.5 
61.5 
52.3 
9.3 

100.0  %  
36.5 
63.5 
55.5 
8.0 

Sep. 30 
  100.0  %  
36.3 
63.7 
52.9 
10.7 

  100.0  % 
36.6 
63.4 
51.3 
12.1 

0.9 

21.8 
9.9 

11.9  %  

0.6 

0.5 

0.4 

0.4 

0.4 

0.3 

0.2 

17.0 
7.8 
9.2  %  

13.5 
5.4 
8.1  %  

11.3 
4.6 
6.7  %  

9.7 
4.4 
5.2  %  

8.4 
2.6 
5.8  %  

11.0 
5.1 
5.9  %   

12.4 
5.9 
6.5  % 

Revenues .......................... 
Cost of revenues............... 
Gross margin.................... 
Operating expenses .......... 
Income from operations ... 
Interest and other income, 
net ................................ 

Income before income 

taxes............................. 
Income tax expense, net...    
Net income ....................... 

Recent Acquisitions 

PPR. On July 17, 2009, we acquired all of the issued and outstanding equity securities of PPR, and its wholly 
owned subsidiary Property and Portfolio Research Ltd., providers of real estate analysis, market forecasts and credit 
risk analytics to the commercial real estate industry. We acquired PPR from DMG Information, Inc. (“DMGI”) in 
exchange for 572,999 shares of CoStar common stock, which had an aggregate value of approximately $20.9 million 
as of the closing date. On July 17, 2009, we issued 433,667 shares of our common stock to DMGI, and we issued the 
remaining  139,332  shares  to  DMGI  on  September  28,  2009  after  taking  into  account  post-closing  purchase  price 
adjustments. 

Resolve  Technology.  On  October  19,  2009,  we  acquired  all  of  the  outstanding  capital  stock  of  Resolve 
Technology,  a  Delaware  corporation,  for  approximately  $4.5  million,  consisting  of  approximately  $3.4  million  in 
cash and 25,886 shares of CoStar common stock, which had an aggregate value of approximately $1.1 million as of 
the closing date.  The shares are subject to a three-year lockup, pursuant to which one-third were released in October 
2010.  The purchase price is subject to certain post-closing adjustments.  Additionally, the seller may be entitled to 
receive  (i)  a  potential  deferred  cash  payment  due  approximately  two  years  after  closing  based  on  the  incremental 
growth of Resolve Technology’s revenue as of September 2011 over its revenue as of September 2009, and (ii) other 
potential  deferred  cash  payments  for  successful  completion  of  operational  and  sales  milestones  during  the  period 
from closing through no later than October 31, 2013, which period may be extended by the parties to a date no later 
than December 31, 2014.    

Accounting Treatment. These acquisitions were accounted for as purchase business combinations.  For each of 
the PPR and Resolve Technology acquisitions, the purchase price was allocated to various working capital accounts, 
developed  technology,  customer  base,  trademarks,  non-competition  agreements  and  goodwill.   The  acquired 
customer  base  for  the  acquisitions,  which  consists  of  one  distinct  intangible  asset  for  each  acquisition  and  is 
composed  of  acquired  customer  contracts  and  the  related  customer  relationships,  is  being  amortized  on  a  125% 
declining balance method over ten years. The identified intangibles are amortized over their estimated useful lives.  
Goodwill for these acquisitions is not amortized, but is subject to annual impairment tests.  The results of operations 
of PPR and Resolve Technology have been consolidated with those of the Company since the respective dates of the 
acquisitions  and  are  not  considered  material  to  our  consolidated  financial  statements.  Accordingly,  pro  forma 
financial information has not been presented for any of the acquisitions. 

Liquidity and Capital Resources 

Our  principal  sources  of  liquidity  are  cash,  cash  equivalents  and  short-term  investments.  Total  cash,  cash 
equivalents and short-term investments were $210.1 million at December 31,  2010 compared to $226.0 million at 
December 31, 2009. The decrease in cash, cash equivalents and short-term investments for the year ended December 
31, 2010 was primarily due to the purchase of a 169,429 square-foot office building located at 1331 L Street, NW in 
downtown  Washington,  DC  for  a  purchase  price  of  $41.25  million  in  cash,  and  approximately  $1.7  million  in 
acquisition  costs,  as  well  as  other  purchases  of  property  and  equipment  of  approximately  $14.4  million,  partially 
offset by net cash flows from operating and financing activities of $41.3 million. 

Changes  in  cash,  cash  equivalents  and  short-term  investments  are  dependent  upon  changes  in,  among  other 
things, working capital items such as accounts receivable, accounts payable, various accrued expenses and deferred 

39 

 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
  
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
  
 
   
 
 
 
 
 
 
  
 
  
 
  
 
  
 
  
 
   
 
 
 
 
 
 
  
 
  
 
  
 
  
 
  
 
   
 
 
 
 
 
 
  
 
    
  
 
  
 
  
 
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
  
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
revenues, as well as changes in our capital structure due to stock option exercises, purchases and sales of short-term 
investments and similar events. 

Net cash provided by operating activities for the year ended December 31, 2010 was $39.3 million compared to 
$38.5  million  for  the  year  ended  December  31,  2009.  The  $800,000  increase  in  net  cash  provided  by  operating 
activities  is  primarily  due  to  a  $4.4  million  net  increase  in  changes  in  operating  assets  and  liabilities  due  to 
differences  in  timing  of  collection  of  receipts  and  payments  of  disbursements  partially  offset  by  a  decrease  of 
approximately  $3.6  million  from  net  income  plus  non-cash  items.   The  $4.4  million  net  increase  in  changes  in 
operating  assets  and  liabilities  was  primarily  related  to  an  increase  in  changes  in  accounts  payable  and  other 
liabilities  of  approximately  $5.2  million  and  approximately  $3.0  million  in  increased  change  in  deferred  revenue 
primarily  associated  with  cash  received  for  annual  billings.    The  increase  in  the  change  in  accounts  payable  and 
other  liabilities  of  approximately  $5.2  million  includes  increased  changes  in  accruals  of  deferred  rent  of 
approximately $2.6 million, $800,000 accrued in June 2010 in anticipation of the settlement of a litigation matter, 
$900,000 remaining in the lease restructuring charge associated with our Boston lease consolidation in September 
2010 and increased accruals associated with the operations of our recent acquisitions and new headquarters.  These 
increases in changes in operating assets and liabilities were partially offset by a decrease in the changes in income 
tax receivable of approximately $4.9 million, as the tax legislation enacted during the fourth quarter of 2010 allowed 
us  to  deduct  100%  of  qualifying  assets  purchased  after  September  8,  2010,  resulting  in  an  income  tax  receivable 
recorded for the year ended December 31, 2010.   

Net cash used in investing activities was $40.5 million for the year ended December 31, 2010, compared to net 
cash  provided  by  investing  activities  of  $4.5  million  for  the  year  ended  December  31,  2009.  This  $45.0  million 
increased change in net cash used in investing activities was primarily due to the February 2010 purchase of our new 
headquarters  in  downtown  Washington,  DC,  as  well  as  capital  improvements  for  our  facilities  in  2010,  partially 
offset by the $3.2 million in net cash payments for acquisitions. 

Net cash provided by financing activities was relatively consistent at $2.0 million for the year ended December 

31, 2010 compared to $2.2 million for the year ended December 31, 2009.   

Contractual Obligations. The following table summarizes our principal contractual obligations at December 31, 
2010  and  the  effect  such  obligations  are  expected  to  have  on  our  liquidity  and  cash  flows  in  future  periods  (in 
thousands):  

Operating leases ............................................................     $  47,453   $ 
Purchase obligations(1) ..................................................    
Total contractual principal cash obligations..................     $  54,216   $  11,488   $ 

8,691   $ 
2,797   

6,763  

13,105   $ 

3,366  

16,471   $ 

Total 

2011 

  2012-2013 

  2014-2015   

2016 and 
thereafter  
18,749 
⎯ 
18,749 

6,908   $ 
600  
7,508   $ 

(1)Amounts do not include (i) contracts with initial terms of twelve months or less, or (ii) multi-year contracts that may be 
terminated  by  a  third  party  or  us.    Amounts  do  not  include  unrecognized  tax  benefits  of  $1.8  million  due  to  uncertainty 
regarding the timing of future cash payments. 

In 2010, we purchased our new headquarters in downtown Washington, DC, and  made capital expenditures of 
approximately $14.4 million.  We expect to make total capital expenditures in 2011 of approximately $7.0 million to 
$10.0 million.  

On February 2, 2011, 1331 L Street Holdings, LLC (“Holdings”), our wholly owned subsidiary, and GLL L-
Street 1331, LLC (“GLL”), an affiliate of Munich-based GLL Real Estate Partners GmbH, entered into a purchase 
and sale agreement pursuant to which (i) Holdings agreed to sell to GLL its interest in the 169,429 square-foot office 
building  located  at  1331  L  Street,  NW,  in  downtown  Washington,  DC,  and  (ii)  CoStar  Realty  Information,  Inc. 
(“CoStar Realty”), our wholly owned subsidiary,  agreed to enter into a lease  expiring May 31, 2025 (with two 5-
year renewal options) with GLL to lease back 149,514 square feet of the office space located in this building, which 
we will continue to use as our corporate headquarters.  The closing of the sale took place on February 18, 2011. The 
aggregate consideration paid by GLL to Holdings pursuant to the purchase and sale agreement was $101.0 million in 
cash, $15.0 million of which is being held in escrow to fund additional build-out and planned improvements at the 
building.  

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55

The lease is effective as of June 1, 2010 and will expire May 31, 2025. The initial base rent is $38.50 per square 
foot  of  occupied  space,  escalating  2.5%  per  year  commencing  June  1,  2011.  Our  obligation  to  pay  rent  increases 
proportionately over the course of the first year of the lease as certain scheduled completion dates for our build out, 
on a floor-by-floor basis, are reached.  Our occupied space under the lease will consist of the entire rented premises 
as of June 1, 2011, from and after which we will owe rent on the entire leased premises.  Annual lease payments for 
2011  will  be  approximately  $5.0  million.    This  obligation  is  not  included  in  the  above  December  31,  2010 
contractual obligation table. 

Our future capital requirements will depend on many factors, including our operating results, expansion efforts, 

and our level of acquisition activity or other strategic transactions. 

To date, we have grown in part by acquiring other companies and we may continue to make acquisitions.  Our 
acquisitions may vary in size and could be material to our current operations. We may use cash, stock, debt or other 
means of funding to make these acquisitions.   In the third quarter of 2009, we issued 572,999 shares of common 
stock to DMGI, Inc. for all of the issued and outstanding capital stock of PPR and its wholly owned subsidiary.  In 
October  2009,  we  acquired  Resolve  Technology  for  approximately  $3.4  million  ($2.9  million  was  paid  upon 
acquisition  and  $450,000  was  deferred  until  February  2010)  in  cash  and  25,886  shares  of  CoStar  common  stock, 
which had an aggregate value of approximately $1.1 million as of the closing date.  The shares are subject to a three-
year lockup, pursuant to which one-third were released in October 2010.  Additionally, the seller may be entitled to 
receive  (i)  a  potential  deferred  cash  payment  due  approximately  two  years  after  closing  based  on  the  incremental 
growth of Resolve Technology’s revenue as of September 2011 over its revenue as of September 2009, and (ii) other 
potential deferred cash payments for successful completion of additional operational and sales milestones during the 
period from closing through October 31, 2013, which period may be extended by the parties to a date no later than 
December 31, 2014.   

Based  on  current  plans,  we  believe  that  our  available  cash  combined  with  positive  cash  flow  provided  by 

operating activities should be sufficient to fund our operations for at least the next 12 months. 

As of December 31, 2010, we had $32.2 million par value of long-term investments in student loan ARS, which 
failed  to  settle  at  auctions.   The  majority  of  these  investments  are  of  high  credit  quality  with  AAA  credit  ratings 
and are  primarily  securities  supported  by  guarantees  from  the  Federal  Family  Education  Loan  Program 
(“FFELP”) of  the  U.S.  Department  of  Education.  While  we  continue  to  earn  interest  on  these  investments,  the 
investments are not liquid in the short term.  In the event we need to immediately access these funds, we may have 
to sell these securities at an amount below par value.  Based on our ability to access our cash, cash equivalents and 
other  short-term  investments  and our  expected  operating  cash  flows, we  do  not  anticipate  having  to  sell  these 
investments below par value in order to operate our business in the foreseeable future. 

On December 8, 2009, a former employee filed a lawsuit against us in the United States District Court for the 
Southern District of California alleging violations of the Fair Labor Standards Act and California state wage-and-
hour laws and is seeking unspecified damages under those laws.  The complaint also seeks to declare a class of all 
similarly situated employees to pursue similar claims.  In May 2010, the parties reached a preliminary agreement to 
settle  this  lawsuit,  and  in  June  2010,  we  accrued  approximately  $800,000  in  anticipation  of  making  a  settlement 
payment that will formally resolve this litigation.  We anticipate the payment will be due during the second quarter 
of 2011.   

Recent Accounting Pronouncements 

In  April  2008,  the  FASB  issued  authoritative  guidance  on  existing  intangibles  or  expected  future  cash  flows 
from those intangibles, which is effective for all fiscal years and interim periods beginning after December 15, 2008. 
Early  adoption  of  this  guidance  is  not  permitted.  This  guidance  requires  additional  footnote  disclosures  about  the 
impact of our ability or intent to renew or extend agreements related to existing intangibles or expected future cash 
flows from those intangibles, how we account for costs incurred to renew or extend such agreements, the time until 
the next renewal or extension period by asset class, and the amount of renewal or extension costs capitalized, if any. 
For  any  intangibles  acquired  after  December  31,  2008,  this  guidance  requires  that  we  consider  our  experience 
regarding renewal and extensions of similar arrangements in determining the useful life of such intangibles. If we do 
not  have  experience  with  similar  arrangements,  this  guidance  requires  that  we  use  the  assumptions  of  a  market 
participant putting the intangible to its highest and best use in determining the useful life. We adopted this guidance 

41 

 
 
 
 
 
 
 
on  January  1,  2009.  The  adoption  of  this  guidance  did  not  have  a  material  impact  on  our  results  of  operations  or 
financial position. 

In  June  2008,  the  FASB  issued  authoritative  guidance  related  to  determining  whether  instruments  granted  in 
share-based  payment  transactions  are  participating  securities.    This  guidance  clarifies  that  unvested  share-based 
payment  awards  with  a  right  to  receive  non-forfeitable  dividends  are  participating  securities.  This  guidance  is 
effective  for  all  annual  and  interim  periods  beginning  after  December  15,  2008.  Adoption  of  this  standard  will 
require  the  two-class  method  of  calculating  basic  earnings  per  share  to  the  extent  that  unvested  share-based 
payments  have  the  right  to  receive  non-forfeitable  dividends.  We  adopted  this  guidance  on  January  1,  2009.    The 
adoption of this guidance did not have a material impact on our results of operations or financial position. 

In  April  2009,  the  FASB  issued  authoritative  guidance  related  to  the  initial  recognition,  measurement  and 
subsequent accounting for assets and liabilities arising from pre-acquisition contingencies in a business combination. 
It requires that such assets acquired or liabilities assumed be initially recognized at fair value at the acquisition date 
if fair value can be determined during the measurement period. When fair value cannot be determined, companies 
should  typically  account  for  the  acquired  contingencies  using  existing  guidance.  This  guidance  requires  that 
companies expense acquisition and deal-related costs that were previously allowed to be capitalized.  This guidance 
also  requires  that  a  systematic  and  rational  basis  for  subsequently  measuring  and  accounting  for  the  assets  or 
liabilities  be  developed  depending  on  their  nature.  This  guidance  was  effective  for  contingent  assets  or  liabilities 
arising  from  business  combinations  with  an  acquisition  date  on  or  after  January  1,  2009.   The  adoption  of  this 
guidance changes the accounting treatment and disclosure for certain specific items in a business combination with 
an acquisition date subsequent to December 31, 2008.  We adopted this guidance on January 1, 2009, and expensed 
acquisition and deal-related costs associated primarily with the acquisitions of PPR and Resolve Technology. 

In April 2009, the FASB issued authoritative guidance for determining whether a market is active or inactive, 
and  whether  a  transaction  is  distressed.  This  guidance  is  applicable  to  all  assets  and  liabilities  (financial  and  non-
financial) and will require enhanced disclosures. We adopted this guidance for our interim period ending June 30, 
2009. The adoption of this guidance did not have a material impact on our results of operations or financial position, 
but did require additional disclosures in our financial statements. 

In  April  2009,  the  FASB  issued  authoritative  guidance  requiring  disclosures  in  interim  reporting  periods 
concerning  the  fair  value  of  financial  instruments  that  were  previously  only  required  in  the  annual  financial 
statements. We adopted the provisions of this guidance for our interim period ending June 30, 2009. The adoption of 
this  guidance  did  not  have  a  material  impact  on  our  results  of  operations  or  financial  position,  but  did  require 
additional disclosures in our financial statements.  

In April 2009, the FASB issued authoritative guidance that redefines what constitutes an other-than-temporary 
impairment,  defines  credit  and  non-credit  components  of  an  other-than-temporary  impairment,  prescribes  their 
financial  statement  treatment,  and  requires  enhanced  disclosures  relating  to  such  impairments.  We  adopted  this 
guidance for our interim period ending June 30, 2009. The adoption of this guidance did not have a material impact 
on our results of operations or financial position, but did require additional disclosures in our financial statements. 

In May 2009, the FASB issued authoritative guidance which establishes general standards of accounting for and 
disclosure of events that occur after the balance sheet date but before financial statements are issued. This guidance 
was effective for all interim and annual reporting periods ending after June 15, 2009. This guidance has not and is 
not expected to result in significant changes in the subsequent events that we report, either through recognition or 
disclosure, in our financial statements. 

In June 2009, the FASB issued authoritative guidance to amend the manner in which entities evaluate whether 
consolidation is required for variable interest entities (VIE).  Previously, variable interest holders were required to 
determine whether they had a controlling financial interest in a VIE based on a quantitative analysis of the expected 
gains  and/or  losses  of  the  entity.  The  new  guidance  requires  an  enterprise  with  a  variable  interest  in  a  VIE  to 
qualitatively assess whether it has a controlling financial interest in the entity, and if so, whether it is the primary 
beneficiary.  This  guidance  also  requires  that  companies  continually  evaluate  VIEs  for  consolidation,  rather  than 
assessing whether consolidation is required based upon the occurrence of triggering events.  This guidance enhances 
disclosures  to  provide  financial  statement  users  with  greater  transparency  about  transfers  of  financial  assets  and  a 
transferor’s  continuing  involvement  with  transferred  financial  assets.  This  guidance  will  be  effective  for  the  first 

42 

  
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

57

annual reporting period beginning after November 15, 2009. This guidance did not materially impact our results of 
operations, financial position or related disclosures. 

In June 2009, the FASB issued authoritative guidance which replaced the previous hierarchy of U.S. GAAP and 
establishes the FASB Codification as the single source of authoritative U.S. GAAP recognized by the FASB to be 
applied  by  nongovernmental  entities.  This  guidance  is  effective  for  financial  statements  issued  for  interim  and 
annual periods ending after September 15, 2009. This guidance did not materially impact our results of operations or 
financial position, but did require changes to our disclosures in our financial statements. 

In July 2009, the FASB issued authoritative guidance to improve the consistency with which companies apply 
fair value measurements guidance to liabilities.  This guidance is effective for interim and annual periods beginning 
after  September  30,  2009.  This  guidance  did  not  materially  impact  our  results  of  operations,  financial  position  or 
related disclosures. 

In October 2009, the FASB issued authoritative guidance that amends existing guidance for identifying separate 
deliverables  in  a  revenue-generating  transaction  where  multiple  deliverables  exist,  and  provides  guidance  for 
measuring  and  allocating  revenue  to  one  or  more  units  of  accounting.  In  addition,  the  FASB  issued  authoritative 
guidance  on  arrangements  that  include  software  elements.    Under  this  guidance,  tangible  products  containing 
software components and non-software components that are essential to the functionality of the tangible product will 
no  longer  be  within  the  scope  of  the  software  revenue  recognition  guidance.  This  guidance  is  effective  using  the 
prospective application or the retrospective application for revenue arrangements entered into or materially modified 
in  fiscal  years  beginning  on  or  after  June  15,  2010  with  earlier  application  permitted.  This  guidance  did  not 
materially impact our results of operations or financial position. 

In  January  2010,  the  FASB  issued  authoritative  guidance  that  amends  the  disclosure  requirements  related  to 
recurring  and  nonrecurring  fair  value  measurements.  This  guidance  requires  new  disclosures  on  the  transfers  of 
assets and liabilities between Level 1 (assets and liabilities measured using observable inputs such as quoted prices 
in  active  markets)  and  Level  2  (assets  and  liabilities  measured  using  inputs  other  than  quoted  prices  in  active 
markets  that  are  either  directly  or  indirectly  observable)  of  the  fair  value  measurement  hierarchy,  including  the 
amount  and  reason  of  the  transfers.  Additionally,  this  guidance  requires  a  roll  forward  of  activities  on  purchases, 
sales, issuance, and settlements of the assets and liabilities measured using significant unobservable inputs (Level 3 
fair  value  measurements).  This  guidance  is  effective  for  interim  and  annual  reporting  periods  beginning  after 
December  15,  2009,  with  the  exception  of  the  additional  disclosure  for  Level  3  assets  and  liabilities,  which  is 
effective for fiscal years beginning after December 15, 2010, and for interim periods within those fiscal years. This 
guidance  did  not  materially  impact  our  results  of  operations  or  financial  position,  but  did  require  changes  to  our 
disclosures in our interim and annual financial statements. 

In  February  2010,  the  FASB  issued  authoritative  guidance  that  amends  the  disclosure  requirements  related  to 
subsequent events. This guidance includes the definition of a Securities and Exchange Commission filer, removes 
the  definition  of  a  public  entity,  redefines  the  reissuance  disclosure  requirements  and  allows  public  companies  to 
omit the disclosure of the date through which subsequent events have been evaluated.  This guidance is effective for 
financial  statements  issued  for  interim  and  annual  periods  ending  after  February  2010.  This  guidance  did  not 
materially  impact  our  results  of  operations  or  financial  position,  but  did  require  changes  to  our  disclosures  in  our 
financial statements. 

In April 2010, the FASB issued authoritative guidance related to the criteria that should be met for determining 
whether the milestone method of revenue recognition is appropriate.  A vendor can recognize consideration that is 
contingent  upon  achievement  of  a  milestone  in  its  entirety  as  revenue  in  the  period  in  which  the  milestone  is 
achieved if the milestone is: (a) commensurate with either the vendor’s performance to achieve the milestone or the 
enhancement of the value of the item delivered; (b) relates solely to past performance; and (c) is reasonable relative 
to  all  deliverables  and  payment  terms  in  the  arrangement.    This  guidance  is  effective  on  a  prospective  basis  for 
financial statements issued for interim and annual periods ending after June 15, 2010 with early adoption permitted.  
The adoption of this guidance did not have a material impact on our results of operations or financial position. 

43 

 
 
 
 
 
 
 
 
 
 
 
 
Item 7A.  Quantitative and Qualitative Disclosures About Market Risk  

We  provide  information,  marketing  and  analytic  services  to  the  commercial  real  estate  and  related  business 
community in the U.S., U.K. and France. Our functional currency for our operations in the U.K. and France is the 
local currency. As such, fluctuations in the British Pound and Euro may have an impact on our business, results of 
operations  and  financial  position.    For  the  year  ended  December  31,  2010,  revenue  denominated  in  foreign 
currencies  was  approximately  8.4%  of  total  revenue.    For  the  year  ended  December  31, 2010,  our  revenue  would 
have  decreased  by  approximately  $1.9  million  if  the  U.S.  dollar  exchange  rate  used  strengthened  by  10%.    In 
addition, we have assets and liabilities denominated in foreign currencies.  A 10% strengthening of the U.S. dollar 
exchange rate against all currencies with which we have exposure at December 31, 2010 would have resulted in an 
increase of approximately $900,000 in the carrying amount of net assets. For the year ended December 31, 2010, our 
revenue  would  have  increased  by  approximately  $1.9  million  if  the  U.S.  dollar  exchange  rate  used  weakened  by 
10%. In addition, we have assets and liabilities denominated in foreign currencies.  A 10% weakening of the U.S. 
dollar exchange rate against all currencies with which we have exposure at December 31, 2010 would have resulted 
in  a  decrease  of  approximately  $900,000  in  the  carrying  amount  of  net  assets.  We  currently  do  not  use  financial 
instruments  to  hedge  our  exposure  to  exchange  rate  fluctuations  with  respect  to  our  foreign  subsidiaries.  We  may 
seek to enter hedging transactions in the future to reduce our exposure to exchange rate fluctuations, but we may be 
unable  to  enter  into  hedging  transactions  successfully,  on  acceptable  terms  or  at  all.    As  of  December  31,  2010, 
accumulated  other  comprehensive  loss  included  a  loss  from  foreign  currency  translation  adjustments  of 
approximately $5.9 million. 

We  do  not  have  material  exposure  to  market  risks  associated  with  changes  in  interest  rates  related  to  cash 
equivalent securities held as of December 31, 2010.  As of December 31, 2010, we had $210.1 million of cash, cash 
equivalents  and short-term  investments.    If  there  is  an  increase  or  decrease  in  interest  rates,  there  will  be  a 
corresponding  increase  or  decrease  in  the  amount  of  interest  earned  on  our  cash,  cash  equivalents  and short-term 
investments.  Based on our ability to access our cash, cash equivalents and short-term investments, and our expected 
operating cash flows, we do not believe that increases or decreases in interest rates will impact our ability to operate 
our business in the foreseeable future. 

Included  within  our  long-term  investments  are  investments  in  mostly  AAA  rated  student  loan  ARS.    These 
securities  are  primarily  securities  supported  by  guarantees  from  the  FFELP  of  the  U.S.  Department  of  Education.  
As of December 31, 2010, auctions for $32.2 million of our investments in auction rate securities failed.  As a result, 
we may not be able to sell these investments at par value until a future auction on these investments is successful. In 
the  event  we  need  to  immediately  liquidate  these  investments,  we  may  have  to  locate  a  buyer  outside  the  auction 
process, who may be unwilling to purchase the investments at par, resulting in a loss.  Based on an assessment of 
fair value of these investments in ARS as of December 31, 2010, we determined that there was a decline in the fair 
value of our ARS investments of approximately $3.0 million, which was deemed to be a temporary impairment and 
recorded as an unrealized loss in accumulated other comprehensive loss in stockholders’ equity.  If the issuers are 
unable  to  successfully  close  future  auctions  and  their  credit  ratings  deteriorate,  we  may  be  required  to  adjust  the 
carrying  value  of  these  investments  as  a  temporary  impairment  and  recognize  a  greater  unrealized  loss  in 
accumulated other comprehensive loss or as an other-than-temporary impairment charge to earnings. Based on our 
ability to access our cash, cash equivalents and short-term investments, and our expected operating cash flows, we 
do not anticipate having to sell these securities below par value in order to operate our business in the foreseeable 
future.  See Note 2 to the consolidated financial statements for further discussion. 

We have approximately $98.4 million in intangible assets as of December 31, 2010. As of December 31, 2010, 
we believe  our intangible assets will be recoverable, however, changes in the economy, the business in which we 
operate  and  our  own  relative  performance  could  change  the  assumptions  used  to  evaluate  intangible  asset 
recoverability. In the event that we determine that an asset has been impaired, we would recognize an impairment 
charge  equal  to  the  amount  by  which  the  carrying  amount  of  the  assets  exceeds  the  fair  value  of  the  asset.  We 
continue to monitor these assumptions and their effect on the estimated recoverability of our intangible assets. 

Item 8. 

Financial Statements and Supplementary Data 

Financial  Statements  meeting  the  requirements  of  Regulation  S-X  are  set  forth  beginning  at  page  F-1. 
Supplementary data is set forth in “Management’s Discussion and Analysis of Financial Condition and Results of 
Operations” under the caption “Consolidated Results of Operations.” 

44 

 
 
 
 
 
 
 
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59

Item 9. 

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 

None.  

Item 9A. 

Controls and Procedures 

We  maintain  disclosure  controls  and  procedures  that  are  designed  to  ensure  that  information  required  to  be 
disclosed in our reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported, 
within  the  time  periods  specified  in  the  Securities  and  Exchange  Commission’s  rules  and  forms,  and  that  such 
information is accumulated and communicated to our management, including our Chief Executive Officer and Chief 
Financial  Officer,  as  appropriate,  to  allow  for  timely  decisions  regarding  required  disclosure.  In  designing  and 
evaluating  the  disclosure  controls  and  procedures,  management  recognized  that  any  controls  and  procedures,  no 
matter  how  well  designed  and  operated,  can  provide  only  reasonable  assurance  of  achieving  the  desired  control 
objectives, and management is required to apply its judgment in evaluating the cost-benefit relationship of possible 
controls and procedures. 

As of December 31, 2010, we carried out an evaluation, under the supervision and with the participation of our 
management,  including  our  Chief  Executive  Officer  and  our  Chief  Financial  Officer,  of  the  effectiveness  of  the 
design and operation of our disclosure controls and procedures. Based on the foregoing, our Chief Executive Officer 
and Chief Financial Officer concluded that our disclosure controls and procedures were effective and were operating 
at the reasonable assurance level. 

Management’s Report on Internal Control over Financial Reporting 

Management of CoStar is responsible for establishing and maintaining adequate internal control over financial 
reporting and for the assessment of the effectiveness of internal control over financial reporting. As defined by the 
Securities  and  Exchange  Commission,  internal  control  over  financial  reporting  is  a  process  designed  by,  or 
supervised by, the Company’s principal executive and principal financial officers, to provide reasonable assurance 
regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  in  accordance  with 
generally accepted accounting principles.    

The  Company’s  internal  control  over  financial  reporting  is  supported  by  written  policies  and  procedures, that 
(1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and 
dispositions of the Company’s assets; (2) provide reasonable assurance that transactions are recorded as necessary to 
permit  preparation  of  financial  statements  in  accordance  with  generally  accepted  accounting  principles,  and  that 
receipts and expenditures of the Company are being made only in accordance with authorizations of the Company’s 
management  and  directors;  and  (3) provide  reasonable  assurance  regarding  prevention  or  timely  detection  of 
unauthorized  acquisition,  use  or  disposition  of  the  Company’s  assets  that  could  have  a  material  effect  on  the 
financial statements.  

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect 
misstatements.  Projections of any evaluation of effectiveness to future periods are subject to the risk that controls 
may  become  inadequate  because  of  changes  in  conditions,  or  that  the  degree  of  compliance  with  the  policies  or 
procedures may deteriorate. 

In  connection  with  the  preparation  of  the  Company's  annual  financial  statements,  management  of  the 
Company  has  undertaken  an  assessment  of  the  effectiveness  of  the  Company’s  internal  control  over  financial 
reporting as of December 31, 2010 based on criteria established in Internal Control – Integrated Framework issued 
by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission  (“the  COSO  Framework”).  
Management's  assessment  included  an  evaluation  of  the  design  of  the  Company's  internal  control  over  financial 
reporting and testing of the operational effectiveness of the Company's internal control over financial reporting. 

Based  on  this  assessment,  management  did  not  identify  any  material  weakness  in  the  Company's  internal 
control, and management has concluded that the Company's internal control over financial reporting was effective 
as of December 31, 2010. 

45 

 
 
 
 
 
 
 
 
 
 
 
Ernst  &  Young  LLP,  the  independent  registered  public  accounting  firm  that  audited  the  Company's  financial 
statements  included  in  this  report,  has  issued  an  attestation  report  on  the  effectiveness  of  internal  control  over 
financial reporting, a copy of which is included in this Annual Report on Form 10-K.  

There have been no changes in our internal control over financial reporting during our most recent fiscal quarter 
that  have  materially  affected,  or  are  reasonably  likely  to  materially  affect,  our  internal  control  over  financial 
reporting.  

Item 9B.  Other Information. 

None. 

Item 10. 

Directors, Executive Officers and Corporate Governance 

PART III 

The information required by this Item is incorporated by reference to our Proxy Statement for our 2011 annual 

meeting of stockholders. 

Item 11. 

Executive Compensation 

The information required by this Item is incorporated by reference to our Proxy Statement for our 2011 annual 

meeting of stockholders. 

Item 12. 

Security Ownership of Certain Beneficial Owners and Management and Related Stockholder 
Matters 

The information required by this Item is incorporated by reference to our Proxy Statement for our 2011 annual 

meeting of stockholders. 

Item 13. 

Certain Relationships and Related Transactions, and Director Independence 

The information required by this Item is incorporated by reference to our Proxy Statement for our 2011 annual 

meeting of stockholders. 

Item 14. 

Principal Accountant Fees and Services 

The information required by this Item is incorporated by reference to our Proxy Statement for our 2011 annual 

meeting of stockholders. 

Item 15. 

Exhibits and Financial Statement Schedules 

PART IV 

(a)(1)  The  following  financial  statements  are  filed  as  a  part  of  this  report:  CoStar  Group,  Inc.  Consolidated 

Financial Statements. 

46 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(a)(2) Financial statement schedules:  

Schedule II – Valuation and Qualifying Accounts  

Years Ended December 31, 2008, 2009, and 2010 (in thousands): 

Allowance for doubtful accounts and 
billing adjustments (1) 
Year ended December 31, 2008 ......................................................  
  $ 
Year ended December 31, 2009 ......................................................  
 $ 
Year ended December 31, 2010 ...................................................................  
 $ 

Charged to 
Expense 
4,042 
4,172 
1,471 

2,959 
3,213 
2,863 

  $ 
  $ 
  $ 

Balance at 
Beginning  
of Year 

COsTAr GrOup 2010 AnnuAL RepoRT

61

Write-offs, 
Net of 
Recoveries 
 $ 
 $ 
 $ 

3,788 
4,522 
1,919 

Balance at End 
of Year 
3,213 
2,863 
2,415 

 $ 
 $ 
 $ 

(1)  Additions  to  the  allowance  for  doubtful  accounts  are  charged  to  bad  debt  expense.  Additions  to  the 

allowance for billing adjustments are charged against revenues. 

Additional financial statement schedules are omitted because they are not applicable or not required or because 
the required information is incorporated herein by reference or included in the financial statements or related notes 
included elsewhere in this report. 

(a)(3) The documents required to be filed as exhibits to this Report under Item 601 of Regulation S-K are listed 

in the Exhibit Index included elsewhere in this report, which list is incorporated herein by reference. 

47 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SIGNATURES 

Pursuant to the requirements of Section 13 of the Securities Act of 1934, as amended, the Registrant has duly 
caused  this  report  to  be  signed  on  its  behalf  by  the  undersigned,  thereunto  duly  authorized,  in  the  City  of 
Washington, District of Columbia, on the 24th day of February 2011. 

COSTAR GROUP, INC. 

By: 

/s/ Andrew C. Florance 
Andrew C. Florance 
President and Chief Executive Officer 

KNOW  ALL  PERSONS  BY  THESE  PRESENTS,  that  each  individual  whose  signature  appears  below 
constitutes and appoints Andrew C. Florance and Brian J. Radecki, and each of them individually, as their true and 
lawful attorneys-in-fact and agents, with full power of substitution, for him and in his name, place and stead, in any 
and all capacities, to sign any and all amendments to this report, and to file the same, with all exhibits thereto and to 
all documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-
in-fact  and  agents,  and  each  of  them,  full  power  and  authority  to  do  and  perform  each  and  every  act  and  thing 
requisite and necessary to be done in connection therewith, as fully to all intents and purposes as he might or could 
do in person, herein by ratifying and confirming all that said attorneys-in-fact and agents or any of them, or his or 
their substitute or substitutes, may lawfully do or cause to be done by virtue hereof. 

Pursuant to the requirements of the Securities Act of 1934, as amended, this report has been signed by the 

following persons on behalf of the registrant and in the capacities and on the dates indicated. 

Signature 

Capacity 

Date 

/s/ Michael R. Klein 
Michael R. Klein 

/s/ Andrew C. Florance 
Andrew C. Florance 

/s/ Brian J. Radecki 
Brian J. Radecki 

/s/ David Bonderman 
David Bonderman 

/s/ Warren H. Haber 
Warren H. Haber 

/s/ Josiah O. Low, III 
Josiah O. Low, III 

/s/ Christopher J. Nassetta 
Christopher J. Nassetta 

/s/ Michael J. Glosserman 
Michael J. Glosserman 

  Chairman of the Board 

  February 24, 2011 

  Chief Executive Officer and  
President and a Director  
(Principal Executive Officer) 

  February 24, 2011 

  Chief Financial Officer  

  February 24, 2011 

(Principal Financial and Accounting Officer) 

  February 24, 2011 

  February 24, 2011 

  February 24, 2011 

  February 18, 2011 

  February 21, 2011 

  Director  

  Director  

  Director  

  Director 

  Director 

48 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

63

Exhibit 
No. 

2.1 

INDEX TO EXHIBITS 

Description 

  Offer Document by CoStar Limited for the share capital of Focus Information Limited (Incorporated by 
reference  to  Exhibit  2.1  to  Amendment  No.  2  to  the  Registration  Statement  on  Form  S-3  of  the 
Registrant (Reg. No. 333-106769) filed with the Commission on August 14, 2003). 

3.1 

  Restated  Certificate  of  Incorporation  (Incorporated  by  reference  to  Exhibit  3.1  the  Registration 
Statement on Form S-1 of the Registrant (Reg. No. 333-47953) filed with the Commission on March 13, 
1998 (the “1998 Form S-1”)). 

3.2 

  Certificate of Amendment of Restated Certificate of Incorporation (Incorporated by reference to Exhibit 

3.1 to the Registrant’s Report on Form 10-Q for the quarter ended June 30, 1999). 

3.3 

  Amended and Restated By-Laws (Incorporated by reference to Exhibit 3.3 to the Registrant’s Report on 

Form 10-K for the year ended December 31, 2008). 

4.1 

  Specimen Common Stock Certificate (Incorporated by reference to Exhibit 4.1 to the Registrant’s Report 

on Form 10-K for the year ended December 31, 1999). 

*10.1 

  CoStar Group, Inc. 1998 Stock Incentive Plan, as amended (Incorporated by reference to Exhibit 10.1 to 

the Registrant’s Report on Form 10-Q for the quarter ended September 30, 2005). 

*10.2 

  CoStar Group, Inc. 2007 Stock Incentive Plan, as amended (Incorporated by reference to Exhibit 10.1 to 

the Registrant’s Current Report on Form 8-K filed June 8, 2010. 

*10.3 

  CoStar  Group,  Inc.  2007  Stock  Incentive  Plan  French  Sub-Plan  (Incorporated  by  reference  to  Exhibit 

10.3 to the Registrant’s Report on Form 10-K for the year ended December 31, 2007). 

*10.4 

*10.5 

*10.6 

*10.7 

*10.8 

*10.9 

  Form  of  Stock  Option  Agreement  between  the  Registrant  and  certain  of  its  officers,  directors  and 
employees (Incorporated by reference to Exhibit 10.8 to the Registrant’s Report on Form 10-K for the 
year ended December 31, 2004). 

  Form  of  Stock  Option  Agreement  between  the  Registrant  and  Andrew  C.  Florance  (Incorporated  by 
reference  to  Exhibit  10.8.1  to  the  Registrant’s  Report  on  Form  10-K  for  the  year  ended  December  31, 
2004). 

  Form  of  Restricted  Stock  Agreement  between  the  Registrant  and  certain  of  its  officers,  directors  and 
employees (Incorporated by reference to Exhibit 10.9 to the Registrant’s Report on Form 10-K for the 
year ended December 31, 2004). 

  Form of 2007 Plan Restricted Stock Grant Agreement between the Registrant and certain of its officers, 
directors and employees (Incorporated by reference to Exhibit 99.1 to the Registrant’s Report on Form 8-
K filed June 22, 2007). 

  Form  of  2007  Plan  Incentive  Stock  Option  Grant  Agreement  between  the  Registrant  and  certain  of  its 
officers  and  employees  (Incorporated  by  reference  to  Exhibit  10.8  to  the  Registrant’s  Report  on  Form 
10-K for the year ended December 31, 2008). 

  Form  of  2007  Plan  Incentive  Stock  Option  Grant  Agreement  between  the  Registrant  and  Andrew  C. 
Florance (Incorporated by reference to Exhibit 10.9 to the Registrant’s Report on Form 10-K for the year 
ended December 31, 2008). 

*10.10    Form of 2007 Plan Nonqualified Stock Option Grant Agreement between the Registrant and certain of 
its  officers  and  employees  (Incorporated  by  reference  to  Exhibit  10.10  to  the  Registrant’s  Report  on 
Form 10-K for the year ended December 31, 2008). 

*10.11    Form of 2007 Plan Nonqualified Stock Option Grant Agreement between the Registrant and certain of 
its directors (Incorporated by reference to Exhibit 10.11 to the Registrant’s Report on Form 10-K for the 
year ended December 31, 2008). 

*10.12    Form of 2007 Plan Nonqualified Stock Option Grant Agreement between the Registrant and Andrew C. 

Florance (Incorporated by reference to Exhibit 10.12 to the Registrant’s Report on Form 10-K for the 
year ended December 31, 2008). 

*10.13    Form of 2007 Plan French Sub-Plan Restricted Stock Agreement between the Registrant and certain of 
its employees (Incorporated by reference to Exhibit 10.10 to the Registrant’s Report on Form 10-K for 
the year ended December 31, 2007). 

49 

 
 
 
INDEX TO EXHIBITS ⎯  (CONTINUED) 

Exhibit 
No. 

Description 

*10.14    CoStar Group, Inc. Employee Stock Purchase Plan, as amended (filed herewith). 
*10.15    Employment  Agreement  for  Andrew  C.  Florance  (Incorporated  by  reference  to  Exhibit  10.2  to 
Amendment No. 1 to the Registration Statement on Form S-1 of the Registrant (Reg. No. 333-47953) 
filed with the Commission on April 27, 1998). 
First  Amendment  to  Andrew  C.  Florance  Employment  Agreement,  effective  January  1,  2009 
(Incorporated by reference to Exhibit 10.16 to the Registrant’s Report on Form 10-K for the year ended 
December 31, 2008).  

*10.16   

*10.17    Executive Service Contract dated February 16, 2007, between Property Investment Exchange Limited 
and Paul Marples (Incorporated by reference to Exhibit 10.14 to the Registrant’s Report on Form 10-K 
for the year ended December 31, 2007). 
Form  of  Indemnification  Agreement  between  the  Registrant  and  each  of  its  officers  and  directors 
(Incorporated  by  reference  to  Exhibit  10.1  to  the  Registrant’s  Report  on  Form  10-Q  for  the  quarter 
ended March 31, 2004).   

*10.18   

10.19 

10.20 

10.21 

21.1 
23.1 
31.1 

  Agreement  for  Lease  between  CoStar  UK  Limited  and  Wells  Fargo  &  Company,  dated  August  25, 
2009 (Incorporated by reference to Exhibit 10.26 to the Registrant’s Report on Form 10-K for the year 
ended December 31, 2009). 
Sub-Underlease between CoStar UK Limited and Wells Fargo & Company, dated November 18, 2009 
(Incorporated by reference to Exhibit 10.28 to the Registrant’s Report on Form 10-K for the year ended 
December 31, 2009). 
Purchase  and  Sale  Agreement  between  1331  L  Street  LLC  and  1331  L  Street  Holdings,  LLC,  dated 
January 20, 2010 (Incorporated by reference to Exhibit 10.1 to the Registrant’s Report on Form 10-Q 
for the quarter ended March 31, 2010). 
Subsidiaries of the Registrant (filed herewith). 

  Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm (filed herewith). 
  Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 

(filed herewith). 

31.2 

  Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 

(filed herewith). 

32.1 

  Certification  of  Principal  Executive  Officer  pursuant  to  18  U.S.C.  Sec.  1350,  as  adopted  pursuant  to 

Section 906 of the Sarbanes-Oxley Act of 2002 (filed herewith). 

32.2 

  Certification  of  Principal  Financial  Officer  pursuant  to  18  U.S.C.  Sec.  1350,  as  adopted  pursuant  to 

Section 906 of the Sarbanes-Oxley Act of 2002 (filed herewith). 

* Management Contract or Compensatory Plan or Arrangement.

50 

 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

65

COSTAR GROUP, INC. 

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS 

Reports of Independent Registered Public Accounting Firm...........................................................................   F-2 
Consolidated Statements of Operations for the years ended December 31,  2008, 2009 and 2010.................   F-4 
Consolidated Balance Sheets as of December 31, 2009 and 2010...................................................................   F-5 
F-6 
Consolidated Statements of Stockholders’ Equity for the years ended December 31, 2008, 2009 and 2010 
Consolidated Statements of Cash Flows for the years ended December 31, 2008, 2009 and 2010 ................   F-7 
Notes to Consolidated Financial Statements ....................................................................................................   F-8 

F-1 

 
 
 
 
Report of Independent Registered Public Accounting Firm 

The Board of Directors and Shareholders of CoStar Group, Inc. 

We have audited the accompanying consolidated balance sheets of CoStar Group, Inc. as of December 31, 2010 
and 2009, and the related consolidated statements of operations, stockholders’ equity, and cash flows for each of the 
three years in the period ended December 31, 2010.  Our audits also included the financial statement schedule listed 
in  the  Index  at  Item  15(a).  These  financial  statements  and  schedule  are  the  responsibility  of  the  Company's 
management.  Our responsibility is to express an opinion on these financial statements  and schedule based on our 
audits. 

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board 
(United  States).  Those  standards  require  that  we  plan  and  perform  the  audit  to  obtain  reasonable  assurance  about 
whether  the  financial  statements  are  free  of  material  misstatement.  An  audit  includes  examining,  on  a  test  basis, 
evidence  supporting  the  amounts  and  disclosures  in  the  financial  statements.  An  audit  also  includes  assessing  the 
accounting  principles  used  and  significant  estimates  made  by  management,  as  well  as  evaluating  the  overall 
financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. 

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated 
financial  position  of  CoStar  Group,  Inc.  at  December  31,  2010  and  2009,  and  the  consolidated  results  of  its 
operations and its cash flows for each of the three years in the period ended December 31, 2010, in conformity with 
U.S. generally accepted accounting principles. Also, in our opinion, the related financial statement schedule, when 
considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the 
information set forth therein. 

We  also  have  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board 
(United  States), CoStar  Group,  Inc.’s  internal  control  over  financial  reporting  as  of  December  31,  2010,  based  on 
criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations 
of the Treadway Commission and our report dated February 24, 2011 expressed an unqualified opinion thereon. 

/s/  Ernst & Young LLP  

McLean, Virginia 

February 24, 2011  

F-2 

 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

67

Report of Independent Registered Public Accounting Firm  

The Board of Directors and Shareholders of CoStar Group, Inc. 

We have audited CoStar Group, Inc.’s internal control over financial reporting as of December 31, 2010, based 
on  criteria  established  in  Internal  Control—Integrated  Framework  issued  by  the  Committee  of  Sponsoring 
Organizations of the Treadway Commission (the COSO criteria). CoStar Group, Inc.’s management is responsible 
for  maintaining  effective  internal  control  over  financial  reporting,  and  for  its  assessment  of  the  effectiveness  of 
internal  control  over  financial  reporting  included  in  the  accompanying  Management’s  Report  on  Internal  Control 
over  Financial  Reporting.  Our  responsibility  is  to  express  an  opinion  on  the  company’s  internal  control  over 
financial reporting based on our audit. 

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board 
(United  States).  Those  standards  require  that  we  plan  and  perform  the  audit  to  obtain  reasonable  assurance  about 
whether  effective  internal  control  over  financial  reporting  was  maintained  in  all  material  respects.  Our  audit 
included  obtaining  an  understanding  of  internal  control  over  financial  reporting,  assessing  the  risk  that  a  material 
weakness  exists,  testing  and  evaluating  the  design  and  operating  effectiveness  of  internal  control  based  on  the 
assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe 
that our audit provides a reasonable basis for our opinion. 

A  company’s  internal  control  over  financial  reporting  is  a  process  designed  to  provide  reasonable  assurance 
regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in 
accordance  with  generally  accepted  accounting  principles.  A  company’s  internal  control  over  financial  reporting 
includes  those  policies  and  procedures  that  (1)  pertain  to  the  maintenance  of  records  that,  in  reasonable  detail, 
accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable 
assurance  that  transactions  are  recorded  as  necessary  to  permit  preparation  of  financial  statements  in  accordance 
with  generally  accepted  accounting  principles,  and  that  receipts  and  expenditures  of  the  company  are  being  made 
only  in  accordance  with  authorizations  of  management  and  directors  of  the  company;  and  (3)  provide  reasonable 
assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s 
assets that could have a material effect on the financial statements. 

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect 
misstatements.   Also,  projections  of  any  evaluation  of  effectiveness  to  future  periods  are  subject  to  the  risk  that 
controls  may  become  inadequate  because  of  changes  in  conditions,  or  that  the  degree  of  compliance  with  the 
policies or procedures may deteriorate. 

In our opinion, CoStar Group, Inc. maintained, in all material respects, effective internal control over financial 

reporting as of December 31, 2010, based on the COSO criteria. 

We  also  have  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board 
(United  States),  the  consolidated  balance  sheets  as  of  December  31,  2010  and  2009,  and  the  related  consolidated 
statements  of  operations,  stockholders’  equity,  and  cash  flows  for  each  of  the  three  years  in  the  period  ended 
December 31, 2010 of CoStar Group, Inc. and our report dated February 24, 2011 expressed an unqualified opinion 
thereon. 

/s/  Ernst & Young LLP  

McLean, Virginia 

February 24, 2011  

F-3 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
CONSOLIDATED STATEMENTS OF OPERATIONS 
(in thousands, except per share data) 

Year Ended December 31, 

2008 

2009 

2010 

Revenues................................................................................................. $  212,428   
Cost of revenues......................................................................................  
73,408   
Gross margin...........................................................................................   139,020   

$ 

209,659    $ 

73,714   
135,945   

226,260 
83,599 
142,661 

Operating expenses: 

Selling and marketing .........................................................................  
Software development.........................................................................  
General and administrative .................................................................  
Purchase amortization .........................................................................  

Income from operations ..........................................................................  
Interest and other income, net.................................................................  
Income before income taxes ...................................................................  
Income tax expense, net..........................................................................  
Net income .............................................................................................. $ 

Net income per share ⎯ basic ................................................................ $ 

Net income per share ⎯ diluted ............................................................. $ 

41,705   
12,759   
39,888   
4,880   
99,232   
39,788   
4,914   
44,702   
20,079   
24,623   

1.27   

1.26   

42,508   
13,942   
44,248   
3,412   
104,110   
31,835   
1,253   
33,088   
14,395   
18,693    $ 

52,455 
17,350 
47,776 
2,305 
119,886 
22,775 
735 
23,510 
10,221 
13,289 

0.95    $ 

0.94    $ 

0.65 

0.64 

$ 

$ 

$ 

Weighted average outstanding shares ⎯ basic.......................................  
Weighted average outstanding shares ⎯ diluted....................................  

19,372   

19,550   

19,780   

19,925   

20,330 

20,707 

See accompanying notes. 

F-4 

 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
 
 
 
 
 
   
 
   
 
 
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
 
 
 
   
 
   
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
CONSOLIDATED BALANCE SHEETS 
(in thousands except per share data) 

ASSETS 

Current assets: 

Cash and cash equivalents..........................................................................................  $ 
Short-term investments ..............................................................................................    
Accounts receivable, less allowance for doubtful accounts of $2,863 and $2,415 

as of December 31, 2009 and 2010, respectively ...................................................  

Deferred income taxes, net.........................................................................................    
Income tax receivable.................................................................................................    
Prepaid expenses and other current assets..................................................................    
Total current assets ........................................................................................................    

COsTAr GrOup 2010 AnnuAL RepoRT

69

December 31, 

2009 

2010 

  $ 

206,405 
3,722 

205,786 
20,188 
(cid:1)

12,855   
3,450 
⎯ 
5,128 
247,407 

13,094 
5,203 
4,940 
5,809 
239,173 

29,189 
⎯ 
69,921 
79,602 
18,774 
2,989 
439,648 

3,123 
12,465 
18,411 
16,895 
4,032 
54,926 

1,450 
1,770 

⎯ 

⎯ 

Long-term investments ..................................................................................................    
Deferred income taxes, net ............................................................................................    
Property and equipment, net ..........................................................................................    
Goodwill ........................................................................................................................    
Intangibles and other assets, net.....................................................................................    
Deposits and other assets ...............................................................................................    
Total assets.....................................................................................................................  $ 

29,724 
1,978 
19,162 
80,321 
23,390 
2,597 
404,579 

LIABILITIES AND STOCKHOLDERS’ EQUITY 

Current liabilities: 

Accounts payable .......................................................................................................  $ 
Accrued wages and commissions...............................................................................    
Accrued expenses .......................................................................................................    
Deferred revenue ........................................................................................................    
Deferred rent ..............................................................................................................    
Total current liabilities...................................................................................................    

Deferred income taxes, net ............................................................................................    
Income taxes payable.....................................................................................................    

Commitments and contingencies ...................................................................................    

Stockholders’ equity: 

Preferred stock, $0.01 par value; 2,000 shares authorized; none outstanding ...........    
Common stock, $0.01 par value; 30,000 shares authorized; 20,617 and 20,773 

3,667 
9,696 
14,167 
14,840 
1,377 
43,747 

⎯ 
1,826 

⎯ 

⎯ 

  $ 

  $ 

issued and outstanding as of December 31, 2009 and 2010, respectively..............  
Additional paid-in capital...........................................................................................    
Accumulated other comprehensive loss .....................................................................    
Retained earnings .......................................................................................................    
Total stockholders’ equity..............................................................................................    
Total liabilities and stockholders’ equity.......................................................................  $ 

206 
364,635 

(7,565)   
1,730 
359,006 
404,579 

  $ 

208 
374,981 
(8,706) 
15,019 
381,502 
439,648 

See accompanying notes. 

F-5 

 
 
  
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
   
 
   
 
   
 
   
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC.(cid:1)
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY 
 (in thousands) 

Comprehensive 
Income  

$ 

24,623   

Common Stock 

  Amount 

Shares 
19,474    $ 
⎯     

Additional 
Paid-In 
Capital 

Accumulated 
Other 
Comprehensive 
Income (Loss) 

Retained 
Earnings 
(Accumulated 
Deficit) 

Total 
Stockholders’ 
Equity 

195    $ 
⎯     

317,570 
⎯ 

   $ 

5,626    $ 
⎯     

(41,586)    $ 
24,623     

(14,061)   

⎯     

⎯     

(5,361)   
5,201   

⎯     

⎯     

⎯ 

⎯ 

(14,061)     

(5,361)     

Balance at December 31, 2007 

Net income 
Foreign currency translation 

adjustment 

Net unrealized loss on 

investments 

Comprehensive income  

$ 

Exercise of stock options 
Restricted stock grants 
Restricted stock grants 

surrendered  

Stock compensation expense, net 

of forfeitures 

ESPP 
Excess tax benefit for exercised 

stock options  

Balance at December 31, 2008 

Net income 
Foreign currency translation 

adjustment 

Net unrealized gain on  

investments 

Comprehensive income  

$ 

Exercise of stock options 
Restricted stock grants 
Restricted stock grants 

surrendered  

Stock compensation expense, net 

of forfeitures 

ESPP 
Consideration for PPR 
Consideration for Resolve 

Technology 

Excess tax benefit for exercised 

stock options  

Balance at December 31, 2009 

Net income 

Foreign currency translation 

adjustment 

Net unrealized loss on  

investments 

Comprehensive income 

Exercise of stock options 

Restricted stock grants 

Restricted stock grants 

surrendered  

Stock compensation expense, net 

of forfeitures 

ESPP 

Excess tax benefit for exercised 

stock options  

Balance at December 31, 2010 

198     
102     

2     
1     

6,555 

⎯       

(49)     

(1)     

(695)       

⎯     
8     

⎯     
19,733     
⎯     

⎯     
⎯     

⎯     
197     
⎯     

18,693   

3,671   

⎯     

⎯     

2,560   
24,924   

⎯     

⎯     

4,907       
329       

5,317       
333,983       
⎯ 

⎯ 

⎯ 

85     
237     

⎯     
2     

2,232 

⎯       

(44)     

⎯      

(672)       

⎯     
7     
573     

⎯     
⎯     
6     

6,438       
230       
20,897       

26     

1     

1,124       

⎯     

20,617     
⎯     

⎯     

206     
⎯     

403       

364,635       
⎯       

13,289   

(1,064)   

⎯     

⎯     

(77)   

⎯     

⎯     

⎯       

⎯       

$ 

12,148   

138     

113     

2     
⎯     

3,720       
⎯       

(103)     

⎯     

(2,906)       

⎯     

8     

⎯     
⎯     

8,270       

360       

⎯     

⎯     

902       

⎯ 

⎯     

⎯     
⎯     

⎯     

⎯     
⎯     

⎯     
(16,963)     
18,693     

⎯ 

⎯     

⎯     
⎯     

⎯     

⎯     
⎯     
⎯     

⎯     

⎯     

1,730     

13,289     

⎯     

⎯     

⎯     
⎯     

⎯     

⎯     
⎯     

⎯     

⎯     
⎯     

⎯     

⎯     
⎯     

⎯     
(13,796)     
⎯     

3,671     

2,560     

⎯     
⎯     

⎯     

⎯     
⎯     
⎯     

⎯     

⎯     

(7,565)     
⎯     

(1,064)     

(77)     

⎯     
⎯     

⎯     

⎯     
⎯     

⎯     

281,805 
24,623 

(14,061) 

(5,361) 

6,557 
1 

(696) 

4,907 
329 

5,317 
303,421 
18,693 

3,671 

2,560 

2,232 
2 

(672) 

6,438 
230 
20,903 

1,125 

403 

359,006 

13,289 

(1,064) 

(77) 

3,722 

⎯ 

(2,906) 

8,270 

360 

902 

20,773    $ 

208    $ 

374,981      $ 

(8,706)    $ 

15,019    $ 

381,502 

                         See accompanying notes. 

F-6 

 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
    
 
 
    
  
 
 
   
 
     
     
 
    
     
     
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
    
  
 
 
   
 
     
     
 
    
     
     
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
       
     
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

71

COSTAR GROUP, INC. 
CONSOLIDATED STATEMENTS OF CASH FLOWS 
(in thousands) 

Operating activities: 
Net income .............................................................................................. $ 
Adjustments to reconcile net income to net cash provided by 

operating activities: 

Year Ended December 31, 
2009 

2010 

2008 

24,623 

  $ 

18,693 

  $ 

13,289 

Depreciation.....................................................................................  
Amortization ....................................................................................  
Deferred income tax expense, net....................................................  
Provision for losses on accounts receivable ....................................  
Excess tax benefit from stock options .............................................  
Stock-based compensation expense.................................................  
Fixed asset write-off ........................................................................  

Changes in operating assets and liabilities, net of acquisitions: 

Accounts receivable.........................................................................  
Interest receivable ............................................................................  
Income tax receivable ......................................................................  
Prepaid expenses and other current assets .......................................  
Deposits and other assets .................................................................  
Accounts payable and other liabilities .............................................  
Deferred revenue .............................................................................  
Net cash provided by operating activities ...........................................  

8,360 
8,441 
2,148 
4,042 
(5,317) 
4,940 
⎯ 

(6,196) 
533 
⎯ 
1,464 
652 
(3,044) 
262 
40,908 

7,583 
7,093 
(2,428)     
4,172 
(403)     
6,460 
603 

(1,610)     
97 
⎯ 
(1,521)     
(1,013)     
1,531 
(812)     

38,445 

8,607 
5,042 
1,675 
1,471 
(902)  
8,306 
674 

(1,776)  

70 
(4,940) 
(714) 
(385) 
6,690 
2,162 
39,269 

Investing activities: 

Purchases of investments .................................................................  
Sales of investments ........................................................................  
Purchases of property and equipment and other assets ...................  
Acquisitions, net of cash acquired ...................................................  
Net cash provided by (used in) investing activities.............................  

(4,839) 
63,949 
(3,656) 
(3,024) 
52,430 

⎯ 
17,159 
(9,420)     
(3,207)     
4,532 

⎯ 
16,854 
(57,358) 
⎯  
(40,504) 

Financing activities: 

Excess tax benefit from stock options .............................................  
Repurchase of restricted stock to satisfy tax withholding    

5,317 
(695)(cid:1)

obligations .................................................................................... 
Proceeds from exercise of stock options and ESPP.........................  
Net cash provided by financing activities ...........................................  

6,853 
11,475 

403 
(672)     

902 
(2,904) 

2,441 
2,172 

4,044 
2,042 

Effect of foreign currency exchange rates on cash and cash 

equivalents........................................................................................... 
(2,616) 
Net increase in cash and cash equivalents ..............................................  
102,197 
Cash and cash equivalents at beginning of year .....................................  
57,785 
Cash and cash equivalents at end of year................................................ $  159,982 

655 
45,804 
159,982 
  $  205,786 

  $ 

(188) 
619 
205,786 
206,405 

See accompanying notes. 

F-7 

 
 
 
 
 
 
 
 
   
 
   
 
   
 
 
 
 
 
   
 
 
 
   
 
 
   
 
 
 
 
   
 
 
 
 
   
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
   
 
 
 
 
 
 
   
 
 
 
   
 
 
   
 
 
 
 
 
 
   
 
 
 
 
 
 
   
 
 
 
 
 
 
   
 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
   
 
 
   
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 

December 31, 2010 

1. ORGANIZATION 

CoStar  Group,  Inc.  (the  “Company”)  has  created  a  comprehensive,  proprietary  database  of  commercial  real 
estate information covering the United States (“U.S.”), as well as parts of the United Kingdom and France. Based on 
its  unique  database,  the  Company  provides  information,  marketing  and  analytic  services  to  the  commercial  real 
estate  and  related  business  community  and  operates  within  two  segments,  U.S.  and  International.  The  Company’s 
information, marketing and analytic services are typically distributed to its clients under subscription-based license 
agreements, which typically have a minimum term of one year and renew automatically. 

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 

Basis of Presentation 

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. 
All significant intercompany balances and transactions have been eliminated in consolidation. Accounting policies 
are consistent for each operating segment. 

Use of Estimates 

The  preparation  of  financial  statements  in  conformity  with  U.S.  generally  accepted  accounting  principles 
(“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the financial 
statements and accompanying notes. Actual results could differ from those estimates. 

Reclassifications 

Certain  previously  reported  amounts  in  Note  9  and  the  Consolidated  Statements  of  Cash  Flows  have  been 

reclassified to conform to the Company’s current presentation. 

Revenue Recognition 

The  Company  primarily  derives  revenues  by  providing  access  to  its  proprietary  database  of  commercial  real 
estate  information.  The  Company  generally  charges  a  fixed  monthly  amount  for  its  subscription-based  services. 
Subscription contract rates are based on the number of sites, number of users, organization size, the client’s business 
focus,  geography  and  the  number  of  services  to  which  a  client  subscribes.  Subscription-based  license  agreements 
typically have a minimum term of one year and renew automatically. 

Revenue  is  recognized  when  (1)  there  is  persuasive  evidence  of  an  arrangement,  (2)  the  fee  is  fixed  and 
determinable,  (3)  services  have  been  rendered  and  payment  has  been  contractually  earned  and  (4)  collectability  is 
reasonably assured.   

Revenues  from  subscription-based  services  are  recognized  on  a  straight-line  basis  over  the  term  of  the 
agreement.  Deferred  revenue  results  from  advance  cash  receipts  from  customers  or  amounts  billed  in  advance  to 
customers from the sales of subscription licenses and is recognized over the term of the license agreement.  

Cost of Revenues 

Cost of revenues principally consists of salaries and related expenses for the Company’s researchers who collect 
and analyze the commercial real estate data that is the basis for the Company’s information, marketing and analytic 
services. Additionally, cost of revenues includes the cost of data from third party data sources, which is expensed as 
incurred, and the amortization of database technology. 

F-8 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

73

COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ⎯  (CONTINUED) 

Significant Customers 

No  single  customer  accounted  for  more  than  5%  of  the  Company’s  revenues  for  each  of  the  years  ended 

December 31, 2008, 2009 and 2010. 

Foreign Currency Translation 

The  Company’s  functional  currency  in  its  foreign  locations  is  the  local  currency.  Assets  and  liabilities  are 
translated into U.S. dollars as of the balance sheet date. Revenues, expenses, gains and losses are  translated at the 
average  exchange  rates  in  effect  during  each  period.  Gains  and  losses  resulting  from  translation  are  included  in 
accumulated  other  comprehensive  income  (loss).  Net  gains  or  losses  resulting  from  foreign  currency  exchange 
transactions are included in the consolidated statements of operations. There were no material gains or losses from 
foreign currency exchange transactions for the years ended December 31, 2008, 2009 and 2010. 

Accumulated Other Comprehensive Loss 

The components of accumulated other comprehensive loss were as follows (in thousands): 

Foreign currency translation adjustment ......................................................  $ 
Accumulated net unrealized loss on investments, net of tax ........................   
Total accumulated other comprehensive loss ...............................................  $ 

Advertising Costs 

Year Ended December 31, 
2010 
2009 
(5,914) 
(4,850) 
(2,792) 
(2,715) 
(8,706) 
(7,565) 

  $ 

  $ 

The  Company  expenses  advertising  costs  as  incurred.  Advertising  expenses  were  approximately  $2.8  million, 

$3.3 million and $3.0 million for the years ended December 31, 2008, 2009 and 2010, respectively. 

Income Taxes 

Deferred income taxes result from temporary differences between the tax basis of assets and liabilities and the 
basis reported in the Company’s consolidated financial statements. Deferred tax liabilities and assets are determined 
based on the difference between the financial statement and the tax basis of assets and liabilities using enacted rates 
expected to be in effect during the year in which the differences reverse. Valuation allowances are provided against 
assets,  including  net  operating  losses,  if  it  is  anticipated  that  some  or  all  of  an  asset  may  not  be  realized  through 
future  taxable  earnings  or  implementation  of  tax  planning  strategies.    Interest  and  penalties  related  to  income  tax 
matters are recognized in income tax expense.  

Net Income Per Share 

Net income per share is computed by dividing net income by the weighted average number of common shares 
outstanding  during  the  period  on  a  basic  and  diluted  basis.  The  Company’s  potentially  dilutive  securities  include 
stock options and restricted stock. Diluted net income per share considers the impact of potentially dilutive securities 
except in periods in which there is a net loss, as the inclusion of the potentially dilutive common shares would have 
an anti-dilutive effect.  

F-9 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ⎯  (CONTINUED) 

Stock-Based Compensation 

Equity instruments issued in exchange for employee services are accounted for using a fair-value based method 

and the fair value of such equity instruments is recognized as expense in the consolidated statements of operations. 

Stock-based  compensation  cost  is  measured  at  the  grant  date  of  the  share-based  awards  based  on  their  fair 
values,  and  is  recognized  on  a  straight  line  basis  as  expense  over  the  vesting  periods  of  the  awards,  net  of  an 
estimated forfeiture rate. 

Cash  flows  resulting  from  excess  tax  benefits  are  classified  as  part  of  net  cash  flows  from  operating  and 
financing activities. Excess tax benefits represent tax benefits related to stock-based compensation in excess of the 
associated deferred tax asset for such  equity compensation.  Net cash proceeds from the exercise of stock options 
and ESPP were approximately $6.9 million; $2.4 million and $4.0 million for the years ended December 31, 2008, 
2009 and 2010, respectively.  There were approximately $5.3 million, $403,000 and $902,000 of excess tax benefits 
realized from stock option exercises for the years ended December 31, 2008, 2009 and 2010. 

Stock-based compensation expense for stock options and restricted stock under equity incentive plans and stock 
purchases  under  the  employee  stock  purchase  plan  included  in  the  Company's  results  of  operations  for  the  years 
ended December 31, was as follows (in thousands): 

Cost of revenues ...................................................................................................   $ 
Selling and marketing...........................................................................................  
Software development ..........................................................................................  
General and administrative...................................................................................  

  547 
400 
  423 
  3,570 
Total ...............................................................................................................   $  4,940 

2008 

  $ 

Year Ended December 31, 
2010 
2009 
  888    $  1,504 
  1,518 
949 
  4,335 
  $  6,460    $  8,306 

  1,125   
  588   
  3,859   

Cash and Cash Equivalents 

The  Company  considers  all  highly  liquid  investments  purchased  with  an  original  maturity  of  three  months  or 
less  to  be  cash  equivalents.  Cash  equivalents  consist  of  money  market  fund  investments  and  U.S.  Government 
Securities.  As  of  December  31,  2009  and  2010,  cash  of  approximately  $519,000  and  $190,000,  respectively,  was 
held to support letters of credit for security deposits. 

Investments 

The Company determines the appropriate classification of debt and equity investments at the time of purchase 
and reevaluates such designation as of each balance sheet date.  The Company considers all of its investments to be 
available-for-sale.    Short-term  investments  consist  of  commercial  paper,  government/federal  notes  and  bonds  and 
corporate  obligations  with  maturities  greater  than  90  days  at  the  time  of  purchase.  Available-for-sale  short-term 
investments  with  contractual  maturities  beyond  one  year  are  classified  as  current  in  the  Company’s  consolidated 
balance  sheets  because  they  represent  the  investment  of  cash  that  is  available  for  current  operations.  Long-term 
investments consist of auction rate securities (“ARS”).  Investments are carried at fair value.   

F-10 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

75

COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ⎯  (CONTINUED) 

Concentration of Credit Risk and Financial Instruments 

The Company performs ongoing credit evaluations of its customers’ financial condition and generally does not 
require  that  its  customers’  obligations  to  the  Company  be  secured.  The  Company  maintains  reserves  for  credit 
losses, and such losses have been within management’s expectations. The large size and widespread nature of the 
Company’s  customer  base  and  the  Company’s  lack  of  dependence  on  individual  customers  mitigate  the  risk  of 
nonpayment of the Company’s accounts receivable. The carrying amount of the  accounts receivable approximates 
the  net  realizable  value.  The  carrying  value  of  the  Company’s  financial  instruments  including  cash  and  cash 
equivalents,  short-term  investments,  long-term  investments,  accounts  receivable,  accounts  payable,  and  accrued 
expenses approximates fair value. 

Allowance for Doubtful Accounts 

The  allowance  for  doubtful  accounts  is  based  on  the  Company’s  assessment  of  the  collectability  of  customer 
accounts.  The Company regularly reviews the allowance by considering factors such as historical experience, the 
aging of the balances, and current economic conditions that may affect a customer’s ability to pay.  

Property and Equipment 

Property  and  equipment  are  stated  at  cost.  All  repairs  and  maintenance  costs  are  expensed  as  incurred. 
Depreciation and amortization are calculated on a straight-line basis over the following estimated useful lives of the 
assets: 

Building 
Leasehold improvements 
Furniture and office equipment 
Research vehicles 
Computer hardware and software 

  Thirty-nine years 
  Shorter of lease term or useful life 
  Five to ten years 
  Five years 
  Two to five years 

Qualifying  internal-use  software  costs  incurred  during  the  application  development  stage,  which  consist 
primarily of outside services and purchased software license costs, are capitalized and amortized over the estimated 
useful life of the asset. All other costs are expensed as incurred.  

Goodwill, Intangibles and Other Assets 

Goodwill  represents  the  excess  of  costs  over  the  fair  value  of  assets  of  businesses  acquired.  Goodwill  and 
intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are 
not  amortized,  but  instead  tested  for  impairment  at  least  annually  by  reporting  unit.  The  Company’s  operating 
segments, U.S. and International, are the reporting units tested for potential impairment.  The goodwill impairment 
test is a two-step process.  The first step is to determine the fair value of each reporting unit.  The estimate of the fair 
value  of  each  reporting  unit  is  based  on  a  projected  discounted  cash  flow  model  that  includes  significant 
assumptions  and  estimates  including  the  Company’s  future  financial  performance  and  a  weighted  average  cost  of 
capital. The fair value of each reporting unit is compared to the carrying amount of the reporting unit. If the carrying 
value of the reporting unit exceeds the fair value, then the second step of the process is performed to measure the 
impairment  loss.    The  impairment  loss  is  measured  based  on  a  projected  discounted  cash  flow  method  using  a 
discount rate determined by  the Company’s management to be commensurate with the risk in  its current business 
model. 

 Intangible assets with estimable useful lives that arose from acquisitions on or after July 1, 2001, are amortized 
over  their  respective  estimated  useful  lives  using  a  method  of  amortization  that  reflects  the  pattern  in  which  the 
economic benefits of the intangible assets are consumed or otherwise used up, and are reviewed at least annually for 
impairment.  

F-11 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ⎯  (CONTINUED) 

Goodwill, Intangibles and Other Assets⎯  (Continued) 

Acquired  database  technology,  customer  base  and  trade  names  and  other  are  related  to  the  Company’s 
acquisitions  (see  Notes  3,  7  and  8).  Acquired  database  technology  and  trade  names  and  other  are  amortized  on  a 
straight-line  basis  over  periods  ranging  from  two  to  ten  years.  The  acquired  intangible  asset  characterized  as 
customer  base  consists  of  one  distinct  intangible  asset  composed  of  acquired  customer  contracts  and  the  related 
customer relationships. Acquired customer bases that arose from acquisitions prior to July 1, 2001 are amortized on 
a straight-line basis principally over a period of ten years. Acquired customer bases that arose from acquisitions on 
or  after  July  1,  2001  are  amortized  on  a  125%  declining  balance  method  over  ten  years.  The  cost  of  capitalized 
building photography is amortized on a straight-line basis over five years. 

Long-Lived Assets 

Long-lived  assets,  such  as  property,  plant,  and  equipment,  and  purchased  intangibles  subject  to  amortization, 
are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an 
asset  may  not  be  recoverable.  Recoverability  of  assets  to  be  held  and  used  is  measured  by  a  comparison  of  the 
carrying  amount  of  an  asset  to  estimated  undiscounted  future  cash  flows  expected  to  be  generated  by  the  asset  or 
asset  group.  If  the  carrying  amount  of  an  asset  exceeds  its  estimated  future  cash  flows,  an  impairment  charge  is 
recognized by the amount for which the carrying amount of the asset exceeds the fair value of the asset. 

Assets  to  be  disposed  of  would  be  separately  presented  in  the  balance  sheet  and  reported  at  the  lower  of  the 
carrying amount or fair value less costs to sell, and would no longer be depreciated. The assets and liabilities of a 
disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections 
of the balance sheet. 

Recent Accounting Pronouncements 

In April 2008, the Financial Accounting Standards Board (“FASB”) issued authoritative guidance on existing 
intangibles or expected future cash flows from those intangibles, which is effective for all fiscal years and interim 
periods beginning after December 15, 2008. Early adoption of this guidance is not permitted. This guidance requires 
additional footnote disclosures about the impact of the Company’s ability or intent to renew or extend agreements 
related to existing intangibles or expected future cash flows from those intangibles, how the Company accounts for 
costs incurred to renew or extend such agreements, the time until the next renewal or extension period by asset class, 
and the amount of renewal or extension costs capitalized, if any. For any intangibles acquired after December 31, 
2008, this guidance requires that the Company consider its experience regarding renewal and extensions of similar 
arrangements  in  determining  the  useful  life  of  such  intangibles.  If  the  Company  does  not  have  experience  with 
similar arrangements, this guidance requires that the Company use the assumptions of a market participant putting 
the  intangible  to  its  highest  and  best  use  in  determining  the  useful  life.  The  Company  adopted  this  guidance  on 
January  1,  2009.  The  adoption  of  this  guidance  did  not  have  a  material  impact  on  the  Company’s  results  of 
operations or financial position. 

In  June  2008,  the  FASB  issued  authoritative  guidance  related  to  determining  whether  instruments  granted  in 
share-based  payment  transactions  are  participating  securities.    This  guidance  clarifies  that  unvested  share-based 
payment  awards  with  a  right  to  receive  non-forfeitable  dividends  are  participating  securities.  This  guidance  is 
effective  for  all  annual  and  interim  periods  beginning  after  December  15,  2008.  Adoption  of  this  standard  will 
require  the  two-class  method  of  calculating  basic  earnings  per  share  to  the  extent  that  unvested  share-based 
payments  have  the  right  to  receive  non-forfeitable  dividends.  The  Company  adopted  this  guidance  on  January  1, 
2009.    The  adoption  of  this  guidance  did  not  have  a  material  impact  on  the  Company’s  results  of  operations  or 
financial position. 

F-12 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

77

COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ⎯  (CONTINUED) 

Recent Accounting Pronouncements⎯  (Continued) 

In  April  2009,  the  FASB  issued  authoritative  guidance  related  to  the  initial  recognition,  measurement  and 
subsequent accounting for assets and liabilities arising from pre-acquisition contingencies in a business combination. 
It requires that such assets acquired or liabilities assumed be initially recognized at fair value at the acquisition date 
if fair value can be determined during the measurement period. When fair value cannot be determined, companies 
should  typically  account  for  the  acquired  contingencies  using  existing  guidance.  This  guidance  requires  that 
companies expense acquisition and deal-related costs that were previously allowed to be capitalized.  This guidance 
also  requires  that  a  systematic  and  rational  basis  for  subsequently  measuring  and  accounting  for  the  assets  or 
liabilities  be  developed  depending  on  their  nature.  This  guidance  was  effective  for  contingent  assets  or  liabilities 
arising  from  business  combinations  with  an  acquisition  date  on  or  after  January  1,  2009.   The  adoption  of  this 
guidance changes the accounting treatment and disclosure for certain specific items in a business combination with 
an  acquisition  date  subsequent  to  December  31,  2008.    The  Company  adopted  this  guidance  on  January  1,  2009, 
and expensed  acquisition  and  deal-related  costs  of  approximately  $700,000  associated  primarily  with  the 
acquisitions  of  Property  and  Portfolio  Research,  Inc.  (“PPR”)  and  Resolve  Technology,  Inc.  (“Resolve 
Technology”).   

In April 2009, the FASB issued authoritative guidance for determining whether a market is active or inactive, 
and  whether  a  transaction  is  distressed.  This  guidance  is  applicable  to  all  assets  and  liabilities  (financial  and  non-
financial) and will require enhanced disclosures. The Company adopted this guidance for its interim period ending 
June 30, 2009. The adoption of this guidance did not have a material impact on the Company’s results of operations 
or financial position, but did require additional disclosures in the Company’s financial statements. 

In  April  2009,  the  FASB  issued  authoritative  guidance  requiring  disclosures  in  interim  reporting  periods 
concerning  the  fair  value  of  financial  instruments  that  were  previously  only  required  in  the  annual  financial 
statements. The Company adopted the provisions of this guidance for the interim period ending June 30, 2009. The 
adoption  of  this  guidance  did  not  have  a  material  impact  on  the  Company’s  results  of  operations  or  financial 
position, but did require additional disclosures in the Company’s financial statements.  

In April 2009, the FASB issued authoritative guidance that redefines what constitutes an other-than-temporary 
impairment,  defines  credit  and  non-credit  components  of  an  other-than-temporary  impairment,  prescribes  their 
financial  statement  treatment,  and  requires  enhanced  disclosures  relating  to  such  impairments.  The  Company 
adopted  this  guidance  for  the  interim  period  ending  June  30,  2009.  The  adoption  of  this  guidance  did  not  have  a 
material impact on the Company’s results of operations or financial position, but did require additional disclosures 
in the Company’s financial statements. 

In May 2009, the FASB issued authoritative guidance which establishes general standards of accounting for and 
disclosure of events that occur after the balance sheet date but before financial statements are issued. This guidance 
was effective for all interim and annual reporting periods ending after June 15, 2009. This guidance has not and is 
not  expected  to  result  in  significant  changes  in  the  subsequent  events  that  the  Company  reports,  either  through 
recognition or disclosure, in its financial statements. 

In June 2009, the FASB issued authoritative guidance to amend the manner in which entities evaluate whether 
consolidation is required for variable interest entities (VIE).  Previously, variable interest holders were required to 
determine whether they had a controlling financial interest in a VIE based on a quantitative analysis of the expected 
gains  and/or  losses  of  the  entity.  The  new  guidance  requires  an  enterprise  with  a  variable  interest  in  a  VIE  to 
qualitatively assess whether it has a controlling financial interest in the entity, and if so, whether it is the primary 
beneficiary.  This  guidance  also  requires  that  companies  continually  evaluate  VIEs  for  consolidation,  rather  than 
assessing whether consolidation is required based upon the occurrence of triggering events.  This guidance enhances 
disclosures  to  provide  financial  statement  users  with  greater  transparency  about  transfers  of  financial  assets  and  a 
transferor’s  continuing  involvement  with  transferred  financial  assets.  This  guidance  will  be  effective  for  the  first 
annual reporting period beginning after November 15, 2009. This guidance did not materially impact the Company’s 
results of operations, financial position or related disclosures. 

F-13 

 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ⎯  (CONTINUED) 

Recent Accounting Pronouncements⎯  (Continued) 

In June 2009, the FASB issued authoritative guidance which replaced the previous hierarchy of U.S. GAAP and 
establishes the FASB Codification as the single source of authoritative U.S. GAAP recognized by the FASB to be 
applied  by  nongovernmental  entities.  This  guidance  is  effective  for  financial  statements  issued  for  interim  and 
annual periods ending after September 15, 2009. This guidance did not materially impact the Company’s results of 
operations or financial position, but did require changes to the disclosures in the Company’s financial statements. 

In July 2009, the FASB issued authoritative guidance to improve the consistency with which companies apply 
fair value measurements guidance to liabilities.  This guidance is effective for interim and annual periods beginning 
after September 30, 2009.  This guidance did not materially impact  the Company’s results of operations, financial 
position or related disclosures. 

In October 2009, the FASB issued authoritative guidance that amends existing guidance for identifying separate 
deliverables  in  a  revenue-generating  transaction  where  multiple  deliverables  exist,  and  provides  guidance  for 
measuring  and  allocating  revenue  to  one  or  more  units  of  accounting.  In  addition,  the  FASB  issued  authoritative 
guidance  on  arrangements  that  include  software  elements.    Under  this  guidance,  tangible  products  containing 
software components and non-software components that are essential to the functionality of the tangible product will 
no  longer  be  within  the  scope  of  the  software  revenue  recognition  guidance.  This  guidance  is  effective  using  the 
prospective application or the retrospective application for revenue arrangements entered into or materially modified 
in  fiscal  years  beginning  on  or  after  June  15,  2010  with  earlier  application  permitted.  This  guidance  did  not 
materially impact the Company’s results of operations or financial position.  

In  January  2010,  the  FASB  issued  authoritative  guidance  that  amends  the  disclosure  requirements  related  to 
recurring  and  nonrecurring  fair  value  measurements.  This  guidance  requires  new  disclosures  on  the  transfers  of 
assets and liabilities between Level 1 (assets and liabilities measured using observable inputs such as quoted prices 
in  active  markets)  and  Level  2  (assets  and  liabilities  measured  using  inputs  other  than  quoted  prices  in  active 
markets  that  are  either  directly  or  indirectly  observable)  of  the  fair  value  measurement  hierarchy,  including  the 
amount  and  reason  of  the  transfers.  Additionally,  this  guidance  requires  a  roll  forward  of  activities  on  purchases, 
sales, issuance, and settlements of the assets and liabilities measured using significant unobservable inputs (Level 3 
fair  value  measurements).  This  guidance  is  effective  for  interim  and  annual  reporting  periods  beginning  after 
December  15,  2009,  with  the  exception  of  the  additional  disclosure  for  Level  3  assets  and  liabilities,  which  is 
effective for fiscal years beginning after December 15, 2010, and for interim periods within those fiscal years. This 
guidance did not materially impact the Company’s results of operations or financial position, but did require changes 
to the disclosures in its interim and annual financial statements. 

In  February  2010,  the  FASB  issued  authoritative  guidance  that  amends  the  disclosure  requirements  related  to 
subsequent events. This guidance  includes the definition of a Securities and Exchange Commission  filer, removes 
the  definition  of  a  public  entity,  redefines  the  reissuance  disclosure  requirements  and  allows  public  companies  to 
omit the disclosure of the date through which subsequent events have been evaluated.  This guidance is effective for 
financial  statements  issued  for  interim  and  annual  periods  ending  after  February  2010.  This  guidance  did  not 
materially  impact  the  Company’s  results  of  operations  or  financial  position,  but  did  require  changes  to  the 
Company’s disclosures in its financial statements. 

In April 2010, the FASB issued authoritative guidance related to the criteria that should be met for determining 
whether the milestone method of revenue recognition is appropriate.  A vendor can recognize consideration that is 
contingent  upon  achievement  of  a  milestone  in  its  entirety  as  revenue  in  the  period  in  which  the  milestone  is 
achieved if the milestone is: (a) commensurate with either the vendor’s performance to achieve the milestone or the 
enhancement of the value of the item delivered; (b) relates solely to past performance; and (c) is reasonable relative 
to  all  deliverables  and  payment  terms  in  the  arrangement.    This  guidance  is  effective  on  a  prospective  basis  for 
financial statements issued for interim and annual periods ending after June 15, 2010 with early adoption permitted.  
The  adoption of this guidance did not have a  material impact  on  the  Company’s results of operations or financial 
position.      

F-14 

 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

79

COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

3. ACQUISITIONS 

On  July  17,  2009,  the  Company  acquired  all  of  the  issued  and  outstanding  equity  securities  of  PPR,  and  its 
wholly  owned  subsidiary  Property  and  Portfolio  Research  Ltd.,  providers  of  real  estate  analysis,  market  forecasts 
and credit risk analytics to the commercial real estate industry. The Company acquired PPR from DMG Information, 
Inc.  (“DMGI”)  in  exchange  for  572,999  shares  of  CoStar  common  stock,  which  had  an  aggregate  value  of 
approximately  $20.9  million  as  of  the  closing  date.  On  July  17,  2009,  433,667  shares  of  the  Company’s  common 
stock were issued to DMGI, and the remaining 139,332 shares were issued to DMGI on September 28, 2009 after 
taking into account post-closing purchase price adjustments.   

The purchase price for the PPR acquisition was allocated as follows (in thousands): 

Working capital .....................................................................................................................................  $ 
Acquired trade names and other............................................................................................................   
Acquired customer base ........................................................................................................................   
Acquired database technology ..............................................................................................................   
Goodwill................................................................................................................................................   

Total purchase consideration .............................................................................................................  $ 

(5,479) 
810 
5,300 
3,700 
16,572 
20,903 

On October 19, 2009, the Company acquired all of the outstanding capital stock of Resolve Technology, Inc. 
(“Resolve Technology”), a Delaware corporation, for approximately $4.5 million, consisting of approximately $3.4 
million  in  cash  and  25,886  shares  of  CoStar  common  stock,  which  had  an  aggregate  value  of  approximately  $1.1 
million  as  of  the  closing  date.    The  shares  are  subject  to  a  three-year  lockup,  pursuant  to  which  one-third  were 
released in October 2010.   Additionally, the seller may be entitled to receive (i) a potential deferred cash payment 
due approximately two years after closing based on the incremental growth of Resolve Technology’s revenue as of 
September  2011  over  its  revenue  as  of  September  2009,  and  (ii)  other  potential  deferred  cash  payments  for 
successful  completion  of  operational  and  sales  milestones  during  the  period  from  closing  through  no  later  than 
October 31, 2013, which period may be extended by the parties to a date no later than December 31, 2014.    

The purchase price for the Resolve Technology acquisition was allocated as follows (in thousands): 

Purchase price in cash and stock ...........................................................................................................  $ 
Deferred consideration ..........................................................................................................................   

Total purchase consideration .............................................................................................................  $ 

Working capital .....................................................................................................................................  $ 
Acquired trade names and other............................................................................................................   
Acquired customer base ........................................................................................................................   
Acquired database technology ..............................................................................................................   
Goodwill................................................................................................................................................   

Total purchase consideration .............................................................................................................  $ 

4,499 
3,052 
7,551 

(550) 
430 
890 
1,200 
5,581 
7,551 

F-15 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

3. ACQUISITIONS⎯  (CONTINUED) 

These  acquisitions  were  accounted  for  as  purchase  business  combinations.    For  each  of  the  PPR  and  Resolve 
Technology  acquisitions,  the  purchase  price  was  allocated  to  various  working  capital  accounts,  developed 
technology, customer base, trademarks, non-competition agreements and goodwill.  The acquired customer base for 
the  acquisitions,  which  consists  of  one  distinct  intangible  asset  for  each  acquisition  and  is  composed  of  acquired 
customer contracts and the related customer relationships, is being amortized on a 125% declining balance method 
over ten years. The identified intangibles are being amortized over their estimated useful lives.  Goodwill for these 
acquisitions is not amortized, but is subject to annual impairment tests.  Goodwill includes acquired workforce. The 
results of operations of PPR and Resolve Technology have been consolidated with those of the Company since the 
respective  dates  of  the  acquisitions  and  are  not  considered  material  to  the  Company’s  consolidated  financial 
statements. Accordingly, pro forma financial information has not been presented for either of the acquisitions. 

4. INVESTMENTS 

The Company determines the appropriate classification of debt and equity investments at the time of purchase 
and re-evaluates such designation as of each balance sheet date.  The Company considers all of its investments to be 
available-for-sale.    Short-term  investments  consist  of  commercial  paper,  government/federal  notes  and  bonds  and 
corporate  obligations  with  maturities  greater  than  90  days  at  the  time  of  purchase.  Available-for-sale  short-term 
investments  with  contractual  maturities  beyond  one  year  are  classified  as  current  in  the  Company’s  consolidated 
balance  sheets  because  they  represent  the  investment  of  cash  that  is  available  for  current  operations.  Long-term 
investments consist of variable rate debt instruments with an auction reset feature, referred to as ARS.  Investments 
are carried at fair market value. 

Scheduled maturities of investments classified as available-for-sale as of December 31, 2010 are as follows (in 

thousands): 

Maturity 

Due in: 

   Fair Value 

2011 ..............................................................................................................................................  $ 
2012-2015.....................................................................................................................................   
2016-2020.....................................................................................................................................   
2021 and thereafter.......................................................................................................................   
Available-for-sale investments ..........................................................................................................  $ 

46 
3,603 
73 
29,189 
32,911 

The realized gains on the Company’s investments for the years ended December 31, 2008, 2009 and 2010 were 
approximately $329,000, $4,000 and $11,000, respectively.  The realized losses on the Company’s investments for 
the  years  ended  December  31,  2008,  2009  and  2010  were  approximately  $489,000,  $5,000  and  $41,000, 
respectively. 

Unrealized holding gains and losses, net of the related tax effect, on available-for-sale securities are excluded 
from  earnings  and  are  reported  as  a  separate  component  of  accumulated  other  comprehensive  income  (loss)  in 
stockholders’  equity  until  realized.    Realized  gains  and  losses  from  the  sale  of  available-for-sale  securities  are 
determined on a specific-identification basis. A decline in market value of any available-for-sale security below cost 
that is deemed to be other-than-temporary results in a reduction in carrying amount to fair value.  The impairment is 
charged  to  earnings  and  a  new  cost  basis  for  the  security  is  established.    Dividend  and  interest  income  are 
recognized when earned. 

F-16 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

81

COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

4. INVESTMENTS ⎯  (CONTINUED) 

As of December 31, 2010, the amortized cost basis and fair value of investments classified as available-for-sale 

are as follows (in thousands): 

Amortized 
Cost 

Gross 
Unrealized 
Gains 

Gross 
Unrealized 
Losses 

  Fair Value 

Collateralized debt obligations........................................................  
3,407    
Corporate debt securities .................................................................  
Government-sponsored enterprise obligations ............................................  
74    
32,175    
Auction rate securities ..................................................................................  
35,702   $ 
Available-for-sale investments.....................................................................  

46   $ 

$ 

$ 

⎯ 
196 
⎯ 
⎯ 
196 

 $ 

 $ 

⎯    $ 
⎯    
(1)    
(2,986)    
(2,987)    $ 

46 
3,603 
73 
29,189 
32,911 

As of December 31, 2009, the amortized cost basis and fair value of investments classified as available-for-sale 

are as follows (in thousands): 

Amortized 
Cost 

Gross 
Unrealized 
Gains 

Gross 
Unrealized 
Losses 

  Fair Value 

12,987   $ 
Collateralized debt obligations........................................................  
6,396    
Corporate debt securities .................................................................  
Residential mortgage-backed securities  ......................................................  
394    
97    
Government-sponsored enterprise obligations ............................................  
Auction rate securities ..................................................................................  
32,750    
52,624   $ 
Available-for-sale investments.....................................................................  

$ 

$ 

5 
331 
⎯ 
⎯ 
⎯ 
336 

 $ 

 $ 

(14)    $ 
⎯    
(7)    
(1)    
(3,026)    
(3,048)    $ 

12,978 
6,727 
387 
96 
29,724 
49,912 

The  unrealized  losses  on  the  Company’s  investments  as  of  December  31,  2009  and  2010  were  generated 
primarily  from  changes  in  interest  rates.  The  losses  are  considered  temporary,  as  the  contractual  terms  of  these 
investments do not permit the issuer to settle the security at a price less than the amortized cost of the investment. 
Because the Company does not intend to sell these instruments and it is more likely than not that the Company will 
not be required to sell these instruments prior to anticipated recovery, which may be maturity, it does not consider 
these  investments  to  be  other-than-temporarily  impaired  as  of  December  31,  2009  and  2010.    See  Note  5  to  the 
consolidated financial statements for further discussion on the fair value of the Company’s financial assets. 

The  components  of  the  Company’s  investments  in  an  unrealized  loss  position  for  more  than  twelve  months 

consists of the following (in thousands): 

December 31, 

2009 

2010 

Aggregate  
Fair 
 Value 

Gross 
Unrealized 
Losses 

Aggregate  
Fair 
 Value 

Gross  
Unrealized  
Losses 

Collateralized debt obligations...............................................................  
Residential mortgage-backed securities .................................................  
Government-sponsored enterprise obligations.......................................  
Auction rate securities............................................................................  

7,578    $   
387     
96     
29,724     

(14)    $ 
(7)   
(1)   
  (3,026)   

$   

⎯   $ 
⎯    
73    
29,189    

$   

37,785    $    (3,048)    $ 

29,262   $ 

F-17 

⎯ 
⎯ 
(1) 
(2,986) 

(2,987) 

 
 
 
 
 
 
 
 
   
 
  
 
  
 
 
 
 
 
 
   
 
  
 
  
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

4. INVESTMENTS ⎯  (CONTINUED) 

The  Company  did  not  have  any  investments  in  an  unrealized  loss  position  for  less  than  twelve  months  as  of 

December 31, 2009 and 2010, respectively. 

The  gross  unrealized  gains  on  the  Company’s  investments  as  of  December  31,  2009  and  2010  were 

approximately $336,000 and $196,000, respectively.  

5. FAIR VALUE 

Fair value is defined as the price that would be received in the sale of an asset or paid to transfer a liability in an 
orderly  transaction  between  market  participants.    There  is  a  three-tier  fair  value  hierarchy,  which  categorizes  the 
inputs used in measuring fair value.  These tiers include: Level 1, defined as observable inputs such as quoted prices 
in  active  markets;  Level  2,  defined  as  inputs  other  than  quoted  prices  in  active  markets  that  are  either  directly  or 
indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore 
requiring an entity to develop its own assumptions. 

The following table represents the Company's fair value hierarchy for its financial assets (cash, cash equivalents 

and investments) and liabilities measured at fair value on a recurring basis as of December 31, 2010 (in thousands): 

Assets: 

Level 1 

  Level 2 

  Level 3 

Total 

Cash ............................................................................................  $  55,496  
Money market funds...................................................................      150,909  
⎯  
Collateralized debt obligations................................................................  
⎯  
Corporate debt securities .........................................................................  
⎯  
Government-sponsored enterprise obligations........................................  
⎯    
Auction rate securities .............................................................................  
Total assets measured at fair value...............................................................  
Liabilities: 

$  206,405   $ 

$ 

Deferred consideration ............................................................................  
Total liabilities measured at fair value .........................................................  

$ 
$ 

⎯   $ 
⎯   $ 

⎯ 
⎯ 
46  
3,603  
73  
⎯  
3,722  

  $ 

⎯  
⎯  
⎯  
⎯  
⎯  
  29,189  
$  29,189  

$  55,496 
  150,909 
46 
3,603 
73 
  29,189 
$  239,316 

⎯  
⎯  

$ 
$ 

3,222  
3,222  

$ 
$ 

3,222 
3,222 

The following table represents the Company's fair value hierarchy for its financial assets (cash, cash equivalents 

and investments) and liabilities measured at fair value on a recurring basis as of December 31, 2009 (in thousands): 

Assets: 

Level 1 

  Level 2 

  Level 3 

Total 

Cash ............................................................................................  $  38,721  
Money market funds...................................................................      167,065  
⎯  
Collateralized debt obligations................................................................  
⎯  
Corporate debt securities .........................................................................  
⎯  
Residential mortgage-backed securities ..................................................  
⎯  
Government-sponsored enterprise obligations........................................  
⎯    
Auction rate securities .............................................................................  
Total assets measured at fair value...............................................................  
Liabilities: 

⎯ 
⎯ 
12,978  
6,727  
387  
96  
         ⎯  
$  205,786   $  20,188  

$ 

  $ 

⎯  
⎯  
⎯  
⎯  
⎯  
⎯  
  29,724  
$  29,724  

$  38,721 
  167,065 
  12,978 
6,727 
387 
96 
  29,724 
$  255,698 

Deferred consideration ............................................................................  
Total liabilities measured at fair value .........................................................  

$ 
$ 

⎯   $ 
⎯   $ 

⎯  
⎯  

$ 
$ 

3,082  
3,082  

$ 
$ 

3,082 
3,082 

F-18 

 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
 
 
 
 
 
 
  
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

83

COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

5. FAIR VALUE ⎯  (CONTINUED) 

The  Company’s  Level  2  assets  consist  of  collateralized  debt  obligations,  corporate  debt  securities,  residential 
mortgage-backed securities and government-sponsored enterprise obligations, which do not have directly observable 
quoted prices in active markets.  The Company’s Level 2 assets are valued using matrix pricing.   

The  Company’s  Level  3  assets  consist  of  ARS,  whose  underlying  assets  are  primarily  student  loan  securities 
supported  by  guarantees  from  the  Federal  Family  Education  Loan  Program  (“FFELP”)  of  the  U.S.  Department  of 
Education. 

The  following  table  summarizes  changes  in  fair  value  of  the  Company’s  Level  3  assets  from  December  31, 

2007 to December 31, 2010 (in thousands): 

Auction 
Rate 
Securities 

Balance at December 31, 2007 ....................................................................................................................  $ 
Unrealized loss included in other comprehensive loss............................................................................  
Settlements ..............................................................................................................................................  
Balance at December 31, 2008 ....................................................................................................................  
Unrealized gain included in other comprehensive loss ...........................................................................  
Settlements ..............................................................................................................................................  
Balance at December 31, 2009 ....................................................................................................................  
Unrealized gain included in other comprehensive loss ...........................................................................  
Settlements ..............................................................................................................................................  
Balance at December 31, 2010 ....................................................................................................................  $ 

53,975 
(3,710) 
(20,925) 
29,340 
684 
(300) 
29,724 
40 
(575) 
29,189 

ARS  are  variable  rate  debt  instruments  whose  interest  rates  are  reset  approximately  every  28  days.  The 

underlying securities have contractual maturities greater than twenty years.  The ARS are recorded at fair value.   

As of December 31, 2010, the Company held ARS with $32.2 million par value, all of which failed to settle at 
auction.  The  majority  of  these  investments  are  of  high  credit  quality  with  AAA  credit  ratings and  are  primarily 
student  loan  securities  supported  by  guarantees  from  the  FFELP of  the  U.S.  Department  of  Education.  The 
Company may not be able to liquidate and fully recover the carrying value of the ARS in the near term.  As a result,  
these securities are classified as long-term investments in the Company’s consolidated balance sheet as of December 
31, 2010.  

While the Company continues to earn interest on its ARS investments at the contractual rate, these investments 
are not currently trading and therefore do not currently have a readily determinable market value.  Accordingly, the 
estimated fair value of the ARS no longer approximates par value.  The Company has used a discounted cash flow 
model to determine the estimated fair value of its investment in ARS as of December 31,  2010.  The assumptions 
used  in  preparing  the  discounted  cash  flow  model  include  estimates  for  interest  rates,  credit  spreads,  timing  and 
amount of cash flows, liquidity risk premiums, expected holding periods and default risk.  Based on this assessment 
of fair value, as of December 31, 2010, the Company determined there was a decline in the fair value of its ARS 
investments of approximately $3.0 million.  The decline was deemed to be a temporary impairment and recorded as 
an unrealized loss in accumulated other comprehensive loss in stockholders’ equity.  In addition, while a majority of 
the ARS are currently rated AAA, if the issuers are unable to successfully close future auctions and/or their credit 
ratings  deteriorate,  the  Company  may  be  required  to  record  additional  unrealized  losses  in  accumulated  other 
comprehensive loss or an other-than-temporary impairment charge to earnings on these investments. 

F-19 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

5. FAIR VALUE ⎯  (CONTINUED) 

As  of  December  31,  2010,  the  Company’s  Level  3  liabilities  consist  of  a  $3.2  million  liability  for  deferred 
consideration  related  to  the  October  19,  2009  acquisition  of  Resolve  Technology.  The  deferred  consideration 
includes (i) a potential deferred cash payment due approximately two years after closing based on the incremental 
growth of Resolve Technology’s revenue as of September 2011 over its revenue as of September 2009, and (ii) other 
potential  deferred  cash  payments  for  successful  completion  of  operational  and  sales  milestones  during  the  period 
from closing through no later than October 31, 2013, which period may be extended by the parties to a date no later 
than December 31, 2014. 

The following table summarizes changes in fair value of the Company’s Level 3 liabilities from December 31, 

2008 to December 31, 2010 (in thousands): 

Balance at December 31, 2008 ....................................................................................................................  $ 
Deferred consideration upon acquisition.................................................................................................  
Accretion for 2009 ..................................................................................................................................  
Balance at December 31, 2009 ....................................................................................................................  
Accretion for 2010 ..................................................................................................................................  
Balance at December 31, 2010 ....................................................................................................................  $ 

Deferred 
Consideration 
⎯ 
3,052 
30 
3,082 
140 
3,222 

The Company used a discounted cash flow model to determine the estimated fair value of its Level 3 liabilities 
as of December 31, 2010.  The significant assumptions used in preparing the discounted cash flow model include the 
discount rate, estimates for future incremental revenue growth and probabilities for completion of operational and 
sales milestones. 

6. PROPERTY AND EQUIPMENT 

Property and equipment consists of the following (in thousands): 

⎯ 
Building ..........................................................................................................................  $ 
Leasehold improvements ................................................................................................     10,333 
Furniture, office equipment and research vehicles .........................................................     20,279 
Computer hardware and software ...................................................................................     28,259 
  58,871 
Accumulated depreciation and amortization ..................................................................     (39,709) 
Property and equipment, net ...........................................................................................  $  19,162 

  $  42,920 
  16,290 
  21,116 
  24,354 
  104,680 
  (34,759) 
  $  69,921 

December 31, 

2009 

2010 

F-20 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

7. GOODWILL 

The changes in the carrying amount of goodwill by operating segment consist of the following (in thousands):  

COsTAr GrOup 2010 AnnuAL RepoRT

85

United States 
31,547 
Goodwill, December 31, 2008 .....................................................................  
$ 
23,858 
Acquisitions.............................................................................................  
⎯ 
Effect of foreign currency translation .....................................................  
Purchase accounting adjustment .............................................................  
(145) 
55,260 
Goodwill, December 31, 2009 .....................................................................  
⎯ 
Effect of foreign currency translation .....................................................  
Goodwill, December 31, 2010 .....................................................................  
55,260 

$ 

International 
$ 

22,781 
⎯ 
2,280 
⎯ 
25,061 
(719) 
24,342 

$ 

Total 

54,328 
23,858 
2,280 
(145) 
80,321 
(719) 
79,602 

$ 

$ 

The  Company  recorded  goodwill  of  approximately  $1.1  million  in  connection  with  the  First  CLS,  Inc. 
acquisition  in  April  2008,  which  was  decreased  by  $145,000  in  2009,  upon  completion  of  purchase 
accounting.  Approximately $1.7 million in additional goodwill was recorded in connection with the First CLS, Inc. 
acquisition  as  a  result  of  the  payment  of  deferred  consideration  of  $1.7  million  in  August  2009.  The  Company 
recorded  goodwill  of  approximately  $16.6  million  in  connection  with  the  July  2009  acquisition  of  PPR.    In  July 
2009, the Company had recorded $12.1 million in goodwill for the PPR acquisition, which was increased by $4.5 
million in December 2009 upon completion of the Company’s review of the income tax attributes and deferred taxes 
related  to  the  PPR  purchase  accounting.  The  Company  recorded  goodwill  of  approximately  $5.6  million  in 
connection with the Resolve Technology acquisition in October 2009. 

During the fourth quarters of 2009 and 2010, the Company completed the annual impairment test of goodwill 

and concluded that goodwill was not impaired. 

F-21 

 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

8. INTANGIBLES AND OTHER ASSETS 

Intangibles and other assets consist of the following (in thousands, except amortization period data): 

December 31, 

2009 

2010 

Weighted-Average 
Amortization 
Period (in years) 

Building photography .......................................................................... 
Accumulated amortization................................................................... 
Building photography, net ................................................................... 

11,504   
(9,089)  
2,415   

$ 

Acquired database technology............................................................. 
Accumulated amortization................................................................... 
Acquired database technology, net...................................................... 

25,790   
(21,144)  
4,646   

Acquired customer base ...................................................................... 
Accumulated amortization................................................................... 
Acquired customer base, net................................................................ 

55,770   
(41,208)  
14,562   

Acquired trade names and other .......................................................... 
Accumulated amortization................................................................... 
Acquired trade names and other, net 

9,755   
(7,988)  
1,767   

Intangibles and other assets, net .......................................................... 

23,390   

$ 

5 

4 

10 

7 

$ 

11,771 
(10,311) 
1,460 

26,034 
(22,150) 
3,884 

55,380 
(43,349) 
12,031 

9,640 
(8,241) 
1,399 

$ 

18,774 

Amortization  expense  for  intangibles  and  other  assets  was  approximately  $8.4  million,  $7.1  million  and  $5.0 

million for the years ended December 31, 2008, 2009 and 2010. 

In  the  aggregate,  amortization  for  intangibles  and  other  assets  existing  as  of  December  31,  2010  for  future 
periods is expected to be approximately $3.3 million, $3.3 million, $2.4 million, $1.8 million and $1.7 million for 
the years ending December 31, 2011, 2012, 2013, 2014 and 2015, respectively. 

F-22 

 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

87

COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

9. INCOME TAXES 

The components of the provision (benefit) for income taxes attributable to operations consist of the following 

(in thousands): 

Current: 

Year Ended December 31, 
2009 

2008 

2010 

Federal................................................................................................  
State....................................................................................................  
Foreign ...............................................................................................  
Total current ...........................................................................................  
Deferred: 

$  18,289 
3,842 
⎯ 
  22,131 

  $ 

  $  15,194 
1,593 
26 
  16,813 

Federal................................................................................................  
State....................................................................................................  
Foreign ...............................................................................................  
Total deferred .........................................................................................  
Total provision for income taxes............................................................  

(408) 
(52) 
(1,592) 
(2,052) 
$  20,079 

(2,097) 
(199) 
(122) 
(2,418) 
  $  14,395 

The components of deferred tax assets and liabilities consists of the following (in thousands): 

7,061 
1,424 
61 
8,546 

1,706 
(6) 
(25)  

1,675 
  $  10,221 

December 31, 

2009 

2010 

Deferred tax assets: 
Reserve for bad debts .................................................................................................. $ 
Accrued compensation ................................................................................................    
Stock compensation.....................................................................................................   
Net operating losses.....................................................................................................   
Accrued reserve ...........................................................................................................   
Capital loss carryovers ................................................................................................   
Unrealized loss on securities .......................................................................................   
Deferred rent................................................................................................................   
Deferred revenue .........................................................................................................   
Other liabilities ............................................................................................................   

1,093 
3,156 
3,168 
2,985 
238 
348 
1,076 
501 
214 
209 
Total deferred tax assets ....................................................................................    12,988 

  $ 

921 
3,030 
3,087 
3,365 
961 
312 
1,074 
1,546 
1,154 
226 
  15,676 

Deferred tax liabilities: 
Prepaids .......................................................................................................................    
Depreciation ................................................................................................................   
Intangibles ...................................................................................................................   
Total deferred tax liabilities...............................................................................    

(638) 
(587) 
(3,350) 
(4,575) 

Net deferred tax asset ..................................................................................................   
Valuation allowance ....................................................................................................   
Net deferred taxes........................................................................................................ $ 

8,413 
(2,985) 
5,428 

  $ 

(725) 
(2,396) 
(4,132) 
(7,253) 

8,423 
(4,670) 
3,753 

F-23 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

9. INCOME TAXES ⎯  (CONTINUED) 

For  the  years  ended  December  31,  2009  and  2010,  a  valuation  allowance  has  been  established  for  certain 
deferred tax assets due to the uncertainty of realization. The valuation allowance for the years ended December 31, 
2009  and  2010  includes  an  allowance  for  unrealized  losses,  capital  loss  carryforwards,  foreign  deferred  tax  assets 
and state net operating loss carryforwards. The valuation allowance for the deferred tax asset for unrealized losses 
has been recorded as an adjustment to accumulated other comprehensive loss. 

The  Company  established  the  valuation  allowance  because  it  is  more  likely  than  not  that  a  portion  of  the 
deferred  tax  asset  for  certain  items  will  not  be  realized  based  on  the  weight  of  available  evidence.  A  valuation 
allowance was established for the unrealized losses on securities and the capital loss carryovers as the Company has 
not  historically  generated  capital  gains,  and  it  is  uncertain  whether  the  Company  will  generate  sufficient  capital 
gains in the future to absorb the capital losses. A valuation allowance was established for  the foreign deferred tax 
assets due to the uncertainty of future foreign taxable income. The Company has not had sufficient taxable income 
historically to utilize the foreign deferred tax assets, and it is uncertain whether the Company will generate sufficient 
taxable income in the future.  Similarly, the Company has established a valuation allowance for net operating losses 
in certain states where it is uncertain whether the Company will generate sufficient taxable income before the losses 
expire. 

The  Company’s  change  in  valuation  allowance  was  a  decrease  of  approximately  $62,000  for  the  year  ended 
December  31,  2009  and  an  increase  of  approximately  $1.7  million  for  the  year  ended  December  31,  2010.  The 
increase  for  the  year  ended  December  31,  2010  is  primarily  due  to  the  increase  in  the  valuation  allowance  for 
foreign deferred tax assets.  

For the year ended December 31, 2010, the Company had  U.S. income of approximately $30.2  million and a 

foreign loss of approximately $6.7 million. 

The Company’s provision for income taxes resulted in effective tax rates that varied from the statutory federal 

income tax rate as follows (in thousands): 

Year Ended December 31, 
2009 

2008 

2010 

Expected federal income tax provision at statutory rate ........................  
State income taxes, net of federal benefit...............................................  
Foreign income taxes, net effect.............................................................  
Stock compensation ...............................................................................  
Increase in valuation allowance .............................................................  
Disregarded entity election.....................................................................  
Nondeductible compensation .................................................................  
Other adjustments...................................................................................  
Income tax expense, net .........................................................................  

$  15,646 
2,505 
497 
87 
1,023 
⎯ 
⎯ 
321 
$  20,079 

  $  11,581 
1,778 
347 
300 
1,446 
(1,477) 
140 
280 
  $  14,395 

  $ 

8,229 
1,372 
(1,688) 
289 
1,657 
(992) 
945 
409 
  $  10,221 

The Company paid approximately $13.4 million, $19.4 million, and $12.9 million in income taxes for the years 

ended December 31, 2008, 2009 and 2010, respectively. 

The  Company  has  net  operating  loss  carryforwards  for  international  income  tax  purposes  of  approximately 

$11.8 million, which do not expire. 

F-24 

 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

89

COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

9. INCOME TAXES ⎯  (CONTINUED) 

The following tables summarize the activity related to the Company’s unrecognized tax benefits (in thousands): 

Unrecognized tax benefit as of December 31, 2007........................................................................  $ 
Increase for current year tax positions  ......................................................................................   
Decrease for prior year tax positions  ........................................................................................   
Expiration of the statute of limitation for assessment of taxes ..................................................   
Unrecognized tax benefit as of December 31, 2008........................................................................   
Increase for current year tax positions .......................................................................................   
Increase for prior year tax positions...........................................................................................   
Expiration of the statute of limitation for assessment of taxes ..................................................   
Unrecognized tax benefit as of December 31, 2009........................................................................   
Increase for current year tax positions .......................................................................................   
Decrease for prior year tax positions .........................................................................................   
Expiration of the statute of limitation for assessment of taxes ..................................................   
Unrecognized tax benefit as of December 31, 2010........................................................................  $ 

233 
1,451 
(9) 
(117) 
1,558 
69 
257 
(28) 
1,856 
70 
(116) 
(44) 
1,766 

Approximately  $244,000  and  $217,000  of  the  unrecognized  tax  benefit  as  of  December  31,  2010,  and  2009, 
respectively, would favorably affect the annual effective tax rate, if recognized in future periods. During 2010, the 
Company  recognized  approximately  $20,000  of  interest  and  $7,000  of  penalties,  and  had  total  accruals  of 
approximately $184,000 for interest and $61,000 for penalties as of December 31, 2010. During 2009, the Company 
recognized  approximately  $10,000  of  interest  benefit  and  $20,000  of  penalties,  and  had  total  accruals  of 
approximately $164,000 for interest and $54,000 for penalties as of December 31, 2009. During 2008, the Company 
recognized  approximately  $145,000  of  interest  and  $9,000  of  penalties,  and  had  total  accruals  of  approximately 
$173,000  for  interest  and  $34,000  for  penalties  as  of  December  31,  2008.  The  Company  does  not  anticipate  the 
amount of the unrecognized tax benefits to change significantly over the next twelve months. 

The  Company’s  federal  and  state  income  tax  returns  for  tax  years  2006  through  2009  remain  open  to 
examination.  The Company’s U.K. income tax returns for tax years 2004 through 2009 remain open to examination. 

10. COMMITMENTS AND CONTINGENCIES 

The  Company  leases  office  facilities  and  office  equipment  under  various  noncancelable-operating  leases.  The 
leases contain various renewal options. Rent expense for the years ended December 31,  2008, 2009 and 2010 was 
approximately $8.0 million, $9.1 million and $12.0 million, respectively. 

Future minimum lease payments as of December 31, 2010 are as follows (in thousands): 

2011 ........................................................................................................................................................  
2012 ........................................................................................................................................................ 
2013 ........................................................................................................................................................  
2014 ........................................................................................................................................................  
2015 ........................................................................................................................................................  
2016 and thereafter ................................................................................................................................. 

$ 

$ 

8,691 
7,774 
5,331 
3,567 
3,341 
18,749 
47,453 

F-25 

 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

10. COMMITMENTS AND CONTINGENCIES ⎯  (CONTINUED) 

On  December  8,  2009,  a  former  employee  filed  a  lawsuit  against  the  Company  in  the  United  States  District 
Court for the Southern District of California alleging violations of the Fair Labor Standards Act and California state 
wage-and-hour laws and is seeking unspecified damages under those laws.  The complaint also seeks to declare a 
class of all similarly situated employees to pursue similar claims.  In May 2010, the parties reached a preliminary 
agreement  to  settle  this  lawsuit,  and  in  June  2010,  the  Company  accrued  approximately  $800,000  in  general  and 
administrative expense in anticipation of making a settlement payment that will formally resolve this litigation.  The 
Company anticipates the payment will be due during the second quarter of 2011.   

Currently,  and  from  time  to  time,  the  Company  is  involved  in  litigation  incidental  to  the  conduct  of  its 
business.  In accordance with GAAP, the Company records a provision for a liability when it is both probable that a 
liability has been incurred and the amount can be reasonably estimated.  At the present time, while it is reasonably 
possible  that  an  unfavorable  outcome  may  occur  as  a  result  of  one  or  more  of  the  Company’s  current  litigation 
matters,  management  has  concluded  that  it  is  not  probable  that  a  loss  has  been  incurred  in  connection  with  the 
Company’s  current  litigation  other  than  as  described  above.  In  addition,  other  than  as  described  above,  the 
Company is unable to estimate the possible loss or range of loss that could result from an unfavorable outcome in 
the Company’s current litigation and accordingly, the Company has not recognized any liability in the consolidated 
financial statements for unfavorable results, if any, other than described above. Legal defense costs are expensed as 
incurred. 

11.  SEGMENT REPORTING 

The  Company  manages  its  business  geographically  in  two  operating  segments,  with  the  primary  areas  of 
measurement  and  decision-making  being  the  U.S.  and  International,  which  includes  the  U.K.  and  France.  The 
Company’s subscription-based information services, consisting primarily of CoStar Property Professional®, CoStar 
Tenant®,  CoStar  COMPS  Professional®,  and  FOCUSTM  services,  currently  generate  approximately  94%  of  the 
Company’s  total  revenues.  CoStar  Property  Professional,  CoStar  Tenant,  and  CoStar  COMPS  Professional  are 
generally  sold  as  a  suite  of  similar  services  and  comprise  the  Company’s  primary  service  offering  in  the  U.S. 
operating  segment.    FOCUS  is  the  Company’s  primary  service  offering  in  the  International  operating  segment. 
Management  relies  on  an  internal  management  reporting  process  that  provides  revenue  and  operating  segment 
EBITDA,  which  is  the  Company’s  net  income  before  interest,  income  taxes,  depreciation  and  amortization. 
Management  believes  that  operating  segment  EBITDA  is  an  appropriate  measure  for  evaluating  the  operational 
performance  of  our  operating  segments.    EBITDA  is  used  by  management  to  internally  measure  operating  and 
management  performance  and  to  evaluate  the  performance  of  the  business.  However,  this  measure  should  be 
considered  in  addition  to,  not  as  a  substitute  for  or  superior  to,  income  from  operations  or  other  measures  of 
financial performance prepared in accordance with GAAP.   

F-26 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

91

COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED) 

11.  SEGMENT REPORTING⎯  (CONTINUED) 

Summarized information by operating segment was as follows (in thousands): 

Year Ended December 31, 
2009 

2008 

2010 

Revenues 
United States.......................................................................................................... 
International 

$  190,075 

  $  191,556 

External customers ........................................................................................... 
Intersegment revenue ....................................................................................... 
Total international revenue.................................................................................... 
Intersegment eliminations ..................................................................................... 
  Total revenues ..................................................................................................... 

  22,353 
⎯ 
  22,353 
⎯ 

$  212,428 

    18,103 
898 
    19,001 
(898) 
  $  209,659 

 $  208,463 

    17,797 
1,266 
    19,063 
(1,266) 
 $  226,260 

EBITDA 
United States.......................................................................................................... 
International........................................................................................................... 
  Total EBITDA ..................................................................................................... 

58,813 
  (2,224) 
56,589 

$ 

$ 

  $ 

  $ 

47,697 
(1,186) 
46,511 

 $ 

 $ 

39,607 
(3,183) 
36,424 

Reconciliation of EBITDA to net income 
EBITDA ................................................................................................................ 
Purchase amortization in cost of revenues ............................................................ 
Purchase amortization in operating expenses........................................................ 
Depreciation and other amortization ..................................................................... 
Interest income, net ............................................................................................... 
Income tax expense, net ........................................................................................ 
  Net income........................................................................................................... 

$  56,589 
  (2,284) 
  (4,880) 
  (9,637) 
4,914 
 (20,079) 
24,623 

$ 

  $ 

46,511 
(2,389) 
(3,412) 
(8,875) 
1,253 
    (14,395) 
18,693 

  $ 

 $ 

36,424 
(1,471) 
(2,305) 
(9,873) 
735 
    (10,221) 
13,289 
 $ 

Intersegment  revenue  is  attributable  to  services  performed  by  Property  and  Portfolio  Research  Ltd.,  a  wholly 
owned  subsidiary  of  PPR,  for  PPR.  Intersegment  revenue  is  recorded  at  an  amount  the  Company  believes 
approximates fair value.  U.S. EBITDA includes a corresponding cost for the services performed by Property and 
Portfolio  Research  Ltd.  for  PPR.    PPR  and  Property  and  Portfolio  Research  Ltd.  were  acquired  in  July  2009.   
International EBITDA includes a corporate allocation of approximately $1.1 million, $500,000 and $400,000 for the 
years ended December 31, 2008, 2009 and 2010, respectively.  The corporate allocation represents costs incurred for 
U.S.  employees  involved  in  management  and  expansion  activities  of  the  Company’s  International  operating 
segment. 

F-27 

 
 
 
 
 
  
  
 
 
 
 
   
 
  
 
 
   
   
 
   
   
  
 
 
   
 
   
 
 
 
   
 
   
 
   
   
  
 
 
   
 
   
 
 
 
   
 
   
 
   
   
   
   
   
   
 
   
   
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED) 

11.  SEGMENT REPORTING⎯  (CONTINUED) 

Summarized information by operating segment consists of the following (in thousands): 

December 31, 

2009 

2010 

Property and equipment, net 
United States...........................................................................................................  $ 
International............................................................................................................   
  Total property and equipment, net........................................................................  $ 

Goodwill 
United States...........................................................................................................  $ 
International............................................................................................................  

Total goodwill.....................................................................................................  $ 

14,851 
4,311 
19,162 

55,260 
25,061 
80,321 

Assets 
United States...........................................................................................................  $ 
International............................................................................................................. 
  Total segment assets .............................................................................................. $ 

424,479 
44,558 
469,037 

Reconciliation of segment assets to total assets 
Total segment assets ...............................................................................................  $ 
Investment in subsidiaries ......................................................................................  
Intercompany receivables .......................................................................................  
  Total assets ...........................................................................................................  $ 

469,037 
(18,344) 
(46,114) 
404,579 

Liabilities 
United States............................................................................................................ $ 
International............................................................................................................   
  Total segment liabilities .......................................................................................  $ 

37,838 
46,678 
84,516 

Reconciliation of segment liabilities to total liabilities 
Total segment liabilities .........................................................................................  $ 
Intercompany payables ...........................................................................................   
  Total liabilities....................................................................................................... $ 

84,516 
(38,943) 
45,573 

 $ 

 $ 

 $ 

 $ 

 $ 

 $ 

 $ 

 $ 

 $ 

 $ 

 $ 

 $ 

67,076 
2,845 
69,921 

55,260 
24,342 
79,602 

469,449 
39,038 
508,487 

508,487 
(18,344)  
(50,495) 
439,648 

52,482 
47,944 
100,426 

100,426 
(42,280) 
58,146 

F-28 

 
 
 
 
  
  
 
 
 
   
 
   
  
 
 
   
 
 
 
   
 
 
   
 
 
 
   
 
 
 
   
 
 
   
  
 
 
   
 
 
 
   
 
 
   
 
   
 
 
 
  
 
 
 
  
 
  
  
 
 
  
 
 
 
  
 
  
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

COsTAr GrOup 2010 AnnuAL RepoRT

93

12.  STOCKHOLDERS’ EQUITY  

Preferred Stock 

The Company has 2,000,000 shares of preferred stock, $0.01 par value, authorized for issuance. The Board of 

Directors may issue the preferred stock from time to time as shares of one or more classes or series. 

Common Stock 

The  Company  has  30,000,000  shares  of  common  stock,  $0.01  par  value,  authorized  for  issuance.  Dividends 
may be declared and paid on the common stock, subject in all cases to the rights and preferences of the holders of 
preferred  stock  and  authorization  by  the  Board  of  Directors.  In  the  event  of  liquidation  or  winding  up  of  the 
Company  and  after  the  payment  of  all  preferential  amounts  required  to  be  paid  to  the  holders  of  any  series  of 
preferred stock, any remaining funds shall be distributed among the holders of the issued and outstanding common 
stock. 

13.  NET INCOME PER SHARE 

The following table sets forth the calculation of basic and diluted net income per share (in thousands except per 

share data): 

Numerator: 

Year Ended December 31, 
2009 

2010 

2008 

Net income .........................................................................................  $  24,623 

  $  18,693 

  $  13,289 

Denominator: 

Denominator for basic net income per share ⎯ weighted-

average outstanding shares .............................................................  

19,372 

19,780 

20,330 

Effect of dilutive securities: 

Stock options and restricted stock......................................................   
Denominator for diluted net income per share ⎯ weighted-

178 

145 

377 

average outstanding shares .............................................................  

19,550 

19,925 

20,707 

Net income per share ⎯ basic................................................................  $ 

Net income per share ⎯ diluted.............................................................  $ 

1.27 

1.26 

  $ 

  $ 

0.95 

0.94 

  $ 

  $ 

0.65 

0.64 

Stock  options  to  purchase  approximately  250,200,  483,800  and  167,000  shares  that  were  outstanding  as  of 
December 31, 2008, 2009 and 2010, respectively, were not included in the computation of diluted earnings per share 
because the exercise price of the stock options was greater than the average share price of the common shares during 
the period and, therefore, the effect would have been anti-dilutive. 

F-29 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

14. EMPLOYEE BENEFIT PLANS 

Stock Incentive Plans  

In June 1998, the Company’s Board of Directors adopted the 1998 Stock Incentive Plan (as amended, the “1998 
Plan”)  prior  to  consummation  of  the  Company’s  initial  public  offering.    In  April  2007,  the  Company’s  Board  of 
Directors  adopted  the  CoStar  Group,  Inc.  2007  Stock  Incentive  Plan  (as  amended,  the  “2007  Plan”),  subject  to 
stockholder approval, which was obtained on June 7, 2007.  All shares of common stock that were authorized for 
issuance  under  the  1998  Plan  that,  as  of  June  7,  2007,  remained  available  for  issuance  under  the  1998  Plan 
(excluding  shares  subject  to  outstanding  awards)  were  rolled  into  the  2007  Plan  and,  as  of  that  date,  no  shares  of 
common stock were available under the 1998 Plan.  The 1998 Plan continues to govern unexercised and unexpired 
awards issued under the 1998 Plan prior to June 7, 2007.  The 1998 Plan provided for the grant of stock and stock 
options  to  officers,  directors  and  employees  of  the  Company  and  its  subsidiaries.  Stock  options  granted  under  the 
1998 Plan could be incentive or non-qualified. The exercise price for an incentive stock option may not be less than 
the fair market value of the Company’s common stock on the date of grant.  The vesting period of the options and 
restricted  stock  grants  was  determined  by  the  Board  of  Directors  and  was  generally  three  to  four  years.  Upon  the 
occurrence of a Change of Control, as defined in the 1998 Plan, all outstanding unexercisable options and restricted 
stock grants under the 1998 Plan immediately become exercisable. 

The  2007  Plan  provides  for  the  grant  of  stock  options,  restricted  stock,  restricted  stock  units,  and  stock 
appreciation  rights  to  officers,  employees,  directors  and  consultants  of  the  Company  and  its  subsidiaries.  Stock 
options  granted  under  the  2007  Plan  may  be  non-qualified  or  may  qualify  as  incentive  stock  options.  Except  in 
limited circumstances related to a merger or other acquisition, the exercise price for an option may not be less than 
the fair market value of the Company’s common stock on the date of grant.  The vesting period for each grant of 
options, restricted stock, restricted stock units and stock appreciation rights under the 2007 Plan is determined by the 
Board of Directors and is generally three to four years, subject to minimum vesting periods for restricted stock and 
restricted  stock  units  of  at  least  one  year.  The  Company  has  reserved  the  following  shares  of  common  stock  for 
issuance  under  the  2007  Plan  (including  an  increase  of  1,300,000  shares  of  common  stock  pursuant  to  an 
amendment to the 2007 Plan approved by the Stockholders on June 2, 2010): (a) 2,300,000 shares of common stock, 
plus (b) 121,875 shares of common stock that were authorized for issuance under the 1998 Plan that, as of June 7, 
2007, remained available for issuance under the 1998 Plan (not including any Shares that were subject as of such 
date to outstanding awards under the 1998 Plan), and (c) any shares of common stock subject to outstanding awards 
under the 1998 Plan as of June 7, 2007 that on or after such date cease for any reason to be subject to such awards 
(other than by reason of exercise or settlement of the awards to the extent they are exercised for or settled in vested 
and nonforfeitable shares). Unless terminated sooner, the 2007 Plan will terminate in April 2017, but will continue 
to govern unexercised and unexpired awards issued under the 2007 Plan prior to that date.  Approximately 430,000 
and  1.9  million  shares  were  available  for  future  grant  under  the  2007  Plan  as  of  December  31,  2009  and  2010, 
respectively. 

F-30 

 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

COsTAr GrOup 2010 AnnuAL RepoRT

95

14. EMPLOYEE BENEFIT PLANS ⎯   (CONTINUED) 

Stock Incentive Plans ⎯ (Continued) 

Option activity was as follows:   

Number of 
Shares 

Range of 
Exercise Price 

Weighted- 
Average 
Remaining 
Contract 
Life (in 
years) 

Weighted- 
Average 
Exercise 
Price 

Aggregate 
Intrinsic 
Value 
(in thousands) 

Outstanding at December 31, 2007 ...............  

967,845 

$16.20 - $54.12 

Granted ....................................................  93,900    $43.99 - $55.07   
(198,434)    $17.77 - $45.18   
Exercised..................................................  
Canceled or expired .................................  
(47,725)    $39.00 - $52.13   

Outstanding at December 31, 2008 ...............  
Granted ....................................................  
Exercised..................................................  
Canceled or expired .................................  

815,586 
267,756    $25.00 - $40.13   
(85,228)    $17.35 - $36.38   
(44,818)    $30.06 - $46.81   

$16.20 - $55.07 

Outstanding at December 31, 2009 ...............  
Granted ....................................................  
Exercised..................................................  
Canceled or expired .................................  

953,296 
160,892    $40.06 - $54.51   
(137,724)    $16.20 - $45.18   
(30,768)    $18.31 - $44.86   

$16.20 - $55.07 

$33.25 
$45.76 
$33.05 
$46.36 

$33.98 
$31.05 
$26.20 
$39.40 

$33.60 
$43.49 
$27.01 
$37.83 

Outstanding at December 31, 2010 ...............  

945,696 

$17.34 - $55.07 

$36.10 

5.70 

$20,293 

Exercisable at December 31, 2008 ................  

701,975 

$16.20 - $54.12 

$31.84 

Exercisable at December 31, 2009 ................  

650,063 

$16.20 - $55.07 

$33.60 

Exercisable at December 31, 2010 ................  

609,274 

$17.34 - $55.07 

$35.21 

4.05 

$13,618 

The aggregate intrinsic value is calculated as the difference between (i) the closing price of the common stock at 
December 31, 2008, 2009 and 2010 and (ii) the exercise prices of the underlying awards, multiplied by the shares 
underlying options as of December 31, 2008, 2009 and 2010, that had an exercise price less than the closing price on 
that date. Options to purchase  198,434,  85,228, and 137,724  shares were exercised for the years ended December 
31, 2008, 2009, and 2010, respectively.  The aggregate intrinsic value of options exercised, determined as of the date 
of option exercise, was $3.4 million, $1.2 million and $2.5 million, respectively. 

At  December  31,  2010,  there  was  $9.9  million  of  unrecognized  compensation  cost  related  to  stock-based 

payments, net of forfeitures, which is expected to be recognized over a weighted-average-period of 2.2 years. 

The weighted-average grant date fair value of each option granted during the years ended December 2008, 2009 

and 2010 was $27.81, $12.72 and $16.54, respectively. 

F-31 

 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

14. EMPLOYEE BENEFIT PLANS ⎯  (CONTINUED) 

Stock Incentive Plans ⎯  (Continued) 

The  Company  estimated  the  fair  value  of  each  option  granted  on  the  date  of  grant  using  the  Black-Scholes 

option-pricing model, using the assumptions noted in the following table: 

Year Ended December 31, 
2009 

2010 

2008 

Dividend yield ........................................................................................   0% 
Expected volatility..................................................................................   59% 
Risk-free interest rate .............................................................................  3.0% 
Expected life (in years)...........................................................................   5 

0% 
43% 
2.2% 
5 

0% 
40% 
2.2% 
5 

The  assumptions  above  and  the  estimation  of  expected  forfeitures  are  based  on  multiple  facts,  including 
historical  employee  behavior  patterns  of  exercising  options  and  post-employment  termination  behavior,  expected 
future employee option exercise patterns, and the historical volatility of the Company’s stock price. 

The following table summarizes information regarding options outstanding at December 31, 2010:    

Options Outstanding 

Options Exercisable 

Range of 
Exercise Price 
  $17.34 - $22.87   
  $23.08 - $24.01   
  $25.00 - $25.00   
  $25.01 - $30.06   
  $36.48 - $39.00   
  $39.53 - $42.10   
  $42.29 - $42.29   
  $42.71 - $44.86   
  $45.18 - $54.51   
  $55.07 - $55.07   
  $17.34 - $55.07   

Number of 
Shares 

122,167   
1,625   
124,357   
110,290   
168,564   
52,978   
106,600   
146,886   
97,229   
15,000   
945,696   

Weighted-Average 
Remaining 
Contractual Life 
(in years) 
1.50 
1.06 
8.16 
2.63 
6.07 
5.01 
9.19 
6.04 
6.46 
7.67 
5.70 

Weighted-
Average 
Exercise Price 
$20.19 
$23.80 
$25.00 
$28.77 
$37.92 
$40.04 
$42.29 
$44.18 
$51.60 
$55.07 
$36.10 

Number of 
Shares 
122,167 
1,625 
39,222 
110,290 
100,551 
38,762 
⎯ 
106,457 
80,200 
10,000 
609,274 

Weighted-
Average 
Exercise Price 
$20.19 
$23.80 
$25.00 
$28.77 
$38.54 
$40.02 
$0.00 
$44.40 
$50.98 
$55.07 
$35.21 

The following table presents unvested restricted stock awards activity for the year ended December 31, 2010: 

Number 
of 
Shares 
Unvested restricted stock at December 31, 2009 .........................................   419,347 
Granted ...................................................................................................   106,931 
Vested .....................................................................................................   (169,363)    
(42,541)   
Canceled .................................................................................................  

Unvested restricted stock at December 31, 2010 .........................................   314,374 

Weighted-Average 
Grant Date 
Fair Value per Share 
$39.40 
$43.01 
$47.54 
$38.63 
$39.09 

F-32 

 
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

97

COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

14. EMPLOYEE BENEFIT PLANS ⎯  (CONTINUED) 

Employee 401(k) Plan  

The Company maintains a 401(k) Plan (the “401(k)”) as a defined contribution retirement plan for all eligible 
employees.  The 401(k) provides for tax-deferred contributions of employees’ salaries, limited to a maximum annual 
amount  as  established  by  the  Internal  Revenue  Service.  In  2008,  the  Company  matched  100%  of  employee 
contributions  up  to  a  maximum  of  6%  of  total  compensation.  In  2009  and  2010,  the  Company  matched  50%  of 
employee contributions up to a maximum of 6% of total compensation.  Amounts contributed to the 401(k) by the 
Company  to  match  employee  contributions  for  the  years  ended  December  31,  2008,  2009  and  2010  were 
approximately $2.6 million, $1.4 million and $1.5 million, respectively. The Company paid administrative expenses 
in connection with the 401(k) plan of approximately $28,000 for the year ended December 31, 2008 and $0 for the 
years ended December 31, 2009 and 2010, respectively. 

Employee Pension Plan 

The Company maintains a company personal pension plan for all eligible employees in the Company’s London, 
England  office.  The  plan  is  a  defined  contribution  plan.  Employees  are  eligible  to  contribute  a  portion  of  their 
salaries,  subject  to  a  maximum  annual  amount  as  established  by  the  Inland  Revenue.  The  Company  contributes  a 
match subject to the percentage of the employees’ contribution. Amounts contributed to the plan by the Company to 
match  employee  contributions  for  the  years  ended  December  31,  2008,  2009  and  2010  were  approximately 
$265,000, $130,000 and $160,000, respectively. 

Employee Stock Purchase Plan  

As of August 1, 2006, the Company introduced an Employee Stock Purchase Plan (“ESPP”), pursuant to which 
eligible employees participating in the plan authorize the Company to withhold from the employees’ compensation 
and  use  the  withheld  amounts  to  purchase  shares  of  the  Company's  common  stock  at  90%  of  the  market  price. 
Participating employees are able to purchase common stock under this plan during the offering period. The offering 
period  begins  the  second  Saturday  before  each  of  the  Company’s  regular  pay  dates  and  ends  on  each  of  the 
Company’s  regular  pay  dates.    There  were  72,237  and  64,106  shares  available  for  purchase  under  the  plan  as  of 
December 31, 2009  and 2010, respectively and approximately  6,600 and 8,100  shares of the Company’s common 
stock were purchased during 2009 and 2010, respectively. 

15. LEASE RESTRUCTURING CHARGES 

Effective  September 24,  2010,  the  Company  consolidated  its  three  facilities  located  in  the  Boston, 
Massachusetts  area,  including  the  facilities  used  by  CoStar,  PPR,  and  Resolve  Technology,  into  one  facility.   The 
consolidation  of  the  facilities  resulted  in  a  lease  restructuring  charge  of  approximately  $1.3 million  recorded  in 
general and administrative expense in the third quarter of 2010. The third quarter lease restructuring charge included 
amounts for the abandonment of certain lease space and the impairment of leasehold improvements.  The amount of 
the lease restructuring charge was based upon management’s best estimate of amounts and timing of certain events 
that will occur in the future. It is possible that the actual outcome of these events may differ from estimates. Changes 
will be made to the restructuring accrual when any such differences become determinable.   

F-33 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ⎯  (CONTINUED) 

15. LEASE RESTRUCTURING CHARGES ⎯  (CONTINUED) 

The following table summarizes the amount included in accrued expenses related to these restructuring charges 

at December 31, 2010 (in thousands):    

Lease 
Restructuring 
Accrual 

Accrual balance at December 31, 2009 .......................................................................................................  $ 
Original charge ........................................................................................................................................  
Rent payments made in 2010 ..................................................................................................................  
Accrual balance at December 31, 2010........................................................................................................  $ 

⎯ 
1,160 
(229) 
931 

16. PURCHASE OF BUILDING 

In February 2010, the Company purchased a 169,429 square-foot office building located at 1331 L Street, NW 
in  downtown  Washington,  DC  together  with  the  tenancy  in  the  underlying  ground  lease  for  the  property  for  a 
purchase price of $41.25 million in cash. This facility is being used primarily by the Company’s U.S. segment. The 
Company began relocating its Bethesda-based employees and infrastructure to the new building starting in July 2010 
and completed its relocation by October 15, 2010, the expiration date of the lease of its Bethesda property.  

In connection with the purchase of the building, the Company assumed the ground lease for the parcel of land 
under the building. The lease, which expires February 29, 2088, requires the payment of minimum annual rent of 
$778,000 through February 29, 2012, then approximately $918,000 annually through February 29, 2024. Thereafter, 
the minimum rate is adjusted to fair market value, as defined in the lease, once every 7 years.   

The  purchase  of  the  building  was  accounted  for  as  an  asset  acquisition.    The  total  purchase  price  of  $41.25 
million,  plus  $1.7  million  of  direct  transaction  costs  was  allocated  to  the  building.    No  other  significant  assets  or 
liabilities were acquired in this transaction. 

17. SUBSEQUENT EVENTS 

On February 2, 2011, 1331 L Street Holdings, LLC (“Holdings”), a wholly owned subsidiary of the Company, 
and GLL L-Street 1331, LLC (“GLL”), an affiliate of Munich-based GLL Real Estate Partners GmbH, entered into 
a  purchase  and  sale  agreement  pursuant  to  which  (i)  Holdings  agreed  to  sell  to  GLL  its  interest  in  the  169,429 
square-foot  office  building  located  at  1331  L  Street,  NW,  in  downtown  Washington,  DC,  and  (ii)  CoStar  Realty 
Information,  Inc.  (“CoStar  Realty”),  a  wholly  owned  subsidiary  of  the  Company,  agreed  to  enter  into  a  lease 
expiring May 31, 2025 (with two 5-year renewal options) with GLL to lease back 149,514 square feet of the office 
space located in this building, which the Company will continue to use as its corporate headquarters.   The closing of 
the  sale  took  place  on  February  18,  2011.  The  aggregate  consideration  paid  by  GLL  to  Holdings  pursuant  to  the 
purchase  and  sale  agreement  was  $101.0  million  in  cash,  $15.0  million  of  which  is  being  held  in  escrow  to  fund 
additional build-out and planned improvements at the building.  

The lease is effective as of June 1, 2010 and will expire May 31, 2025. The initial base rent is $38.50 per square 
foot of occupied space, escalating 2.5% per year commencing June 1, 2011. The Company’s obligation to pay rent 
increases proportionately over the course of the first year of the lease as certain scheduled completion dates for the 
Company’s build out, on a floor-by-floor basis, are reached.  The Company’s occupied space under the  lease will 
consist  of  the  entire  rented  premises  as  of  June  1,  2011,  from  and  after  which  the  Company  will  owe  rent  on  the 
entire leased premises.  Annual lease payments for 2011 will be approximately $5.0 million.    

F-34 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT

99

EXHIBIT 21.1 

SUBSIDIARIES OF THE REGISTRANT 

     a) CoStar Realty Information, Inc., a Delaware corporation 

     b) CoStar Limited, a U.K. company 

     c) CoStar UK Limited, a U.K. company 

d) Grecam S.A.S., a France Societée par Actions Simplifiée 

e) Property and Portfolio Research, Inc., a Delaware corporation 

f) Property and Portfolio Research Ltd., a U.K. company 

g) Resolve Technology, Inc., a Delaware corporation 

h) 1331 L Street Holdings, LLC, a Delaware limited liability company 

i) CGI Building Finance, LLC, a Delaware limited liability company 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consent of Independent Registered Public Accounting Firm 

EXHIBIT 23.1 

We consent to the incorporation by reference in the following Registration Statements:            

(1)  Registration Statement Number  333-82599 on Form S-8 pertaining to the Realty Information Group, Inc. 

1998 Stock Incentive Plan 

(2)  Registration Statement Number  333-92165 on Form pertaining to the CoStar Group, Inc. 1998 Stock 

Incentive Plan, as amended 

(3)  Registration Statement Number  333-45770 on Form S-8 pertaining to the CoStar Group, Inc. 1998 Stock 

Incentive Plan, as amended 

(4)  Registration Statement Number  333-69548 on Form S-8 pertaining to the CoStar Group, Inc. 1998 Stock 

Incentive Plan (as amended) 

(5)  Registration Statement Number  333-135709 on Form S-8 pertaining to the CoStar Group, Inc. Employee 

Stock Purchase Plan 

(6)  Registration Statement Number  333-143968 on Form S-8 pertaining to the CoStar Group, Inc. 2007 Stock 

Incentive Plan, as amended 

(7)  Registration Statement Number  333-167424 on Form S-8 pertaining to the CoStar Group, Inc. 2007 Stock 

Incentive Plan, as amended 

of our reports dated February 24, 2011, with respect to the consolidated financial statements and schedule of CoStar 
Group, Inc. and the effectiveness of internal control over financial reporting of CoStar Group, Inc. included in this 
Annual Report (Form 10-K) of CoStar Group, Inc for the year ended December 31, 2010. 

/s/ Ernst & Young LLP  

McLean, Virginia 
February 24, 2011  

 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT 101

EXHIBIT 31.1 

CERTIFICATION 

I, Andrew C. Florance, certify that:  

1.  I have reviewed this annual report on Form 10-K of CoStar Group, Inc.;  

2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a 
material fact necessary to make the statements made, in light of the circumstances under which such statements 
were made, not misleading with respect to the period covered by this report; 

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly 
present in all material respects the financial condition, results of operations and cash flows of the registrant as of, 
and for, the periods presented in this report; 

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls 
and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial 
reporting (as defined in Exchange Act Rules 13(a)-15(f) and 15(d)-15(f)) for the registrant and have: 

a)  Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be 
designed under our supervision, to ensure that material information relating to the registrant, including its 
consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,  particularly  during  the 
period in which this report is being prepared; 

b)  Designed  such  internal  control  over  financial  reporting,  or  caused  such  internal  control  over  financial 
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of 
financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in  accordance  with 
generally accepted accounting principles; 

c)  Evaluated  the  effectiveness  of  the  registrant’s  disclosure  controls  and  procedures  and  presented  in  this 
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the 
period covered by this report based on such evaluation; and 

d)  Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during  the  registrant’s  most  recent  fiscal  quarter  (the  registrant’s  fourth  fiscal  quarter  in  the  case  of  an 
annual  report)  that  has  materially  affected,  or  is  reasonably  likely  to  materially  affect,  the  registrant’s 
internal control over financial reporting; and 

5.  The  registrant’s  other  certifying  officers  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal 
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of 
directors (or persons performing the equivalent functions): 

a)  All  significant  deficiencies  and  material  weaknesses  in  the  design  or  operation  of  internal  control  over 
financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, 
summarize and report financial information; and 

b)  Any fraud, whether or not material, that involves management or other employees who have a significant 

role in the registrant’s internal control over financial reporting. 

Date: February 24, 2011 

By: 

/s/ Andrew C. Florance 
Andrew C. Florance 
Chief Executive Officer 
(Principal Executive Officer and 
Duly Authorized Officer) 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
EXHIBIT 31.2 

CERTIFICATION 

I, Brian J. Radecki, certify that:  

1.  I have reviewed this annual report on Form 10-K of CoStar Group, Inc.; 

2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a 
material fact necessary to make the statements made, in light of the circumstances under which such statements 
were made, not misleading with respect to the period covered by this report; 

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly 
present in all material respects the financial condition, results of operations and cash flows of the registrant as of, 
and for, the periods presented in this report;  

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls 
and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial 
reporting (as defined in Exchange Act Rules 13(a)-15(f) and 15(d)-15(f)) for the registrant and have: 

a)  Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be 
designed under our supervision, to ensure that material information relating to the registrant, including its 
consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,  particularly  during  the 
period in which this report is being prepared; 

b)  Designed  such  internal  control  over  financial  reporting,  or  caused  such  internal  control  over  financial 
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of 
financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in  accordance  with 
generally accepted accounting principles; 

c)  Evaluated  the  effectiveness  of  the  registrant’s  disclosure  controls  and  procedures  and  presented  in  this 
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the 
period covered by this report based on such evaluation; and 

d)  Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during  the  registrant’s  most  recent  fiscal  quarter  (the  registrant’s  fourth  fiscal  quarter  in  the  case  of  an 
annual  report)  that  has  materially  affected,  or  is  reasonably  likely  to  materially  affect,  the  registrant’s 
internal control over financial reporting; and 

5.  The  registrant’s  other  certifying  officers  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal 
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of 
directors (or persons performing the equivalent functions): 

a)  All  significant  deficiencies  and  material  weaknesses  in  the  design  or  operation  of  internal  control  over 
financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, 
summarize and report financial information; and 

b)  Any fraud, whether or not material, that involves management or other employees who have a significant 

role in the registrant’s internal control over financial reporting. 

Date: February 24, 2011 

By: 

/s/ Brian J. Radecki 
Brian J. Radecki 
Chief Financial Officer 
(Principal Financial and Accounting 
Officer and Duly Authorized Officer) 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COsTAr GrOup 2010 AnnuAL RepoRT 103

EXHIBIT 32.1 

CoStar Group, Inc. 
1331 L Street, NW 
Washington, DC 20005 

February 24, 2011 

Securities and Exchange Commission 
100 F Street, NE 
Washington, DC  20549 

Re:  Certification Of Principal Executive Officer Pursuant To 18 U.S.C. Sec. 1350 

Dear Ladies and Gentlemen:  

In connection with the accompanying Annual Report on Form 10-K of CoStar Group, Inc., for the year ended 
December 31, 2010, I, Andrew C. Florance, Chief Executive Officer of CoStar Group, Inc., hereby certify pursuant 
to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that: 

1)  such  Annual  Report  on  Form  10-K  of  CoStar  Group,  Inc.,  for  the  year  ended  December  31,  2010,  fully 
complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C 78m or 
78o (d)); and 

2)  the  information  contained  in  such  Annual  Report  on  Form  10-K  of  CoStar  Group,  Inc.,  for  the  year  ended 
December  31,  2010,  fairly  presents,  in  all  material  respects,  the  financial  condition  and  results  of  operations  of 
CoStar Group, Inc. 

By: 

/s/ Andrew C. Florance 
Andrew C. Florance 
Chief Executive Officer 
(Principal Executive Officer and 
Duly Authorized Officer) 

A  signed  original  of  this  written  statement  required  by  Section  906,  or  other  document  authenticating, 
acknowledging or otherwise adopting the signature that appears in typed form within the electronic version of this 
written statement required by Section 906, has been provided to CoStar Group, Inc. and will be retained by CoStar 
Group, Inc. and furnished to the Securities and Exchange Commission or its staff upon request. 

In accordance with Item 601 of Regulation S-K, this certification is being “furnished” as Exhibit 32.1 to CoStar 
Group, Inc.’s annual report and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange 
Act  of  1934  (the  “Exchange  Act”)  or  otherwise  subject  to  the  liabilities  of  that  section,  nor  shall  it  be  deemed 
incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set 
forth by specific reference in such a filing. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
EXHIBIT 32.2 

CoStar Group, Inc. 
1331 L Street, NW 
Washington, DC 20005 

February 24, 2011 

Securities and Exchange Commission 
100 F Street, NE 
Washington, DC  20549 

Re: Certification Of Principal Financial Officer Pursuant To 18 U.S.C. Sec. 1350 

Dear Ladies and Gentlemen: 

In connection with the accompanying Annual Report on Form 10-K of CoStar Group, Inc., for the year ended 
December 31, 2010, I, Brian J. Radecki, Chief Financial Officer of CoStar Group, Inc., hereby certify pursuant to 18 
U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that: 

1)  such  Annual  Report  on  Form  10-K  of  CoStar  Group,  Inc.,  for  the  year  ended  December  31,  2010,  fully 
complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 
78o (d)); and 

2)  the  information  contained  in  such  Annual  Report  on  Form  10-K  of  CoStar  Group,  Inc.,  for  the  year  ended 
December  31,  2010,  fairly  presents,  in  all  material  respects,  the  financial  condition  and  results  of  operations  of 
CoStar Group, Inc. 

By: 

/s/ Brian J. Radecki 
Brian J. Radecki 
Chief Financial Officer 
(Principal Financial and Accounting 
Officer and Duly Authorized Officer) 

A  signed  original  of  this  written  statement  required  by  Section  906,  or  other  document  authenticating, 
acknowledging or otherwise adopting the signature that appears in typed form within the electronic version of this 
written statement required by Section 906, has been provided to CoStar Group, Inc. and will be retained by CoStar 
Group, Inc. and furnished to the Securities and Exchange Commission or its staff upon request. 

In accordance with Item 601 of Regulation S-K, this certification is being “furnished” as Exhibit 32.2 to CoStar 
Group, Inc.’s annual report and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange 
Act  of  1934  (the  “Exchange  Act”)  or  otherwise  subject  to  the  liabilities  of  that  section,  nor  shall  it  be  deemed 
incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set 
forth by specific reference in such a filing. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Michael R. Klein

Andrew C. Florance*

David Bonderman

Michael j. Glosserman

Warren H. Haber

josiah O. Low, III

Christopher j. Nassetta

Brian j. Radecki*

john L. Stanfill*

jennifer L. Kitchen*

Paul Marples*

Frank A. Carchedi

jonathan M. Coleman

Susan E. jeffress

Dr. Ruijue Peng 

joshua A. Scoville 

Frank A. Simuro

Dean L. Violagis

This  report  contains  “forward-looking  statements,”  including,  without  limitation, 
statements  regarding  CoStar’s  expectations,  beliefs,  intentions  or  strategies 
regarding the future. These statements are subject to many risks and uncertainties 
that  could  cause  actual  results  to  differ  materially  from  these  statements.  Please 
review the section entitled “Risk Factors” in CoStar’s Form 10-K for the year ended 
December  31,  2010,  for  potential  factors  that  could  cause  actual  results  to  differ 
materially from these forward-looking statements. All forward-looking statements 
are based on information available to CoStar on the date of this report, and we assume 
no obligation to update such statements.

meet Our team

leading  
The  
way

BOard OF directOrs

Michael R. Klein 
Chairman of the Board,  
CoStar Group, Inc. +   
Chairman of the Board of  
The Sunlight Foundation

Warren H. Haber 
Chairman of the  
Board + Chief  
Executive Officer,  
Founders Equity, Inc.

Andrew C. Florance* 
President + Chief Executive 
Officer, CoStar Group, Inc.

Josiah O. Low, III 
Senior Advisor,  
Catterton Partners L.P.

Christopher J. Nassetta 
President +  
Chief Executive Officer, 
Hilton Worldwide

David Bonderman 
Founding Partner,  
TPG Capital, L.P.

Michael J. Glosserman 
Managing Partner 
The jBG Companies

management team

Andrew C. Florance* 
President +  
Chief Executive Officer

Jonathan M. Coleman 
General Counsel +  
Secretary

Brian J. Radecki* 
Chief Financial Officer

John L. Stanfill* 
Senior Vice President,  
Sales + Customer Service

Jennifer L. Kitchen* 
Senior Vice President,  
Research

Paul Marples* 
Managing Director,  
CoStar U.K. Limited

Frank A. Carchedi 
Senior Vice President,  
Corporate Development

Susan E. Jeffress 
Vice President,  
Customer Service

Dr. Ruijue Peng 
Chief Research Officer,  
PPR

Joshua A. Scoville 
Director of U.S. Research, 
PPR

Frank A. Simuro 
Chief Information Officer

Dean L. Violagis 
Vice President, Research

photo of Andrew Florance (page 4) ©Joanne s. lawton/Washington Business Journal

*DENOTEs COsTAr ExECuTIVE + sECTION 16 OFFICEr 

COSTAR GROUP

2010

 ANNUAL

 REPORT

SHAREHOLDER INFORMATION

Stock Listing
Symbol: CSGP, 
NASDAQ Listed

Independent Auditors
Ernst & Young LLP
8484 Westpark Drive
McLean, VA 22102 

Transfer Agent 
and Registrar
American Stock Transfer &
Trust Company, LLC
6201 15th Avenue
Brooklyn, NY 11219

CORPORATE INFORMATION

Corporate Offi ce
CoStar Group, Inc.
1331 L Street, NW
Washington, DC 20005

1-800-811-4798
www.costar.com

Investor Relations
Brian J. Radecki
Chief Financial Offi cer
(202) 336-6920

Timothy J. Trainor
Communications Director
(202) 336-6975

ABOUT COSTAR

CoStar Group (Nasdaq: CSGP) is commercial real estate’s 
leading provider of information, analytic and marketing 
services. Founded in 1987, CoStar conducts expansive, 
ongoing research to produce and maintain the largest and 
most comprehensive database of commercial real estate 
information. Our suite of online services enables clients to 
analyze, interpret and gain unmatched insight on  
commercial property values, market conditions and current 
availabilities. Headquartered in Washington, DC, CoStar 
maintains offi ces throughout the U.S. and in Europe with a 
staff of approximately 1,500 worldwide, including the 
industry’s largest professional research organization. 
For more information, visit http://www.costar.com.

©2011 CoStar Group, Inc.

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