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CoStar Group

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FY2001 Annual Report · CoStar Group
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a n n u a l   r e p o r t   2 0 0 1

Every Building. Every Detail.®
Every Building. Every Detail.®

CoStar 

Group,

Inc.

Annual

Report

2001

Hundreds of thousands of transactions are completed
each year across the $5 trillion commercial real estate
industry. Each one of those transactions requires hun-
dreds of detailed facts for the participants to make
informed decisions. Access to reliable market informa-
tion can greatly improve the speed, efficiency and value
of the transaction.

CoStar Group, Inc. is the principal information provider
to the U.S. commercial real estate industry. CoStar offers
commercial real estate professionals access to the most
accurate and comprehensive database of information on
the U.S. commercial real estate market, and the largest

known digital image library of commercial properties.
CoStar delivers its extensive content through a suite 
of products that provides customers with the critical
knowledge to understand market conditions, value prop-
erties, identify prospects, discover opportunities and
conduct transactions efficiently.

Whether it be CoStar PropertyTM to find space and posi-
tion buildings effectively, CoStar COMPS® to accurately
value an asset, CoStar Tenant®, a versatile prospecting
tool, or CoStar ConnectTM to enable customers to pres-
ent their listings on their Web sites, CoStar is at work in
almost every major real estate firm in the United States. 

1

CoStar 

Group,

Inc.

Annual

Report

2001

Financial
Highlights

In thousands, except per share data

1999)

2000)

2001)

Revenues .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .  

$ 30,234)

$ 58,502)

$ 72,513)

Net income (loss).   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .  

$ (12,277)

$ (49,655)

$ (20,161)

Net income (loss) per share .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .  

$

(1.05)

$

(3.28)

$

(1.29)

Weighted-average common shares .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .  

11,727)

15,137)

15,636)

Cash, cash equivalents, and short-term investments .   .   .   .   .   .   .   .   .  

$ 94,074)

$ 47,101)

$ 42,002)

Total assets .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .  

$ 136,905)

$ 145,871)

$ 123,646)

Stockholders’ equity.   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .  

$ 119,697)

$126,374)

$ 108,019)

Five Year Revenue Growth
($’s in millions)

Quarterly EBITDA
($’s in millions)

(earnings before interest, taxes,
depreciation and amortization)

$80

70

60

50

40

30

20

10

0

$6

4

2

0

-2

-4

-6

1997

1998

1999

2000

2001

1Q
2001

2Q
2001

3Q
2001

4Q
2001

2

CoStar 

Group,

Inc.

Annual

Report

2001

Andrew C. Florance
President and Chief Executive Officer 

To our
Shareholders

I am pleased to report that we not only met, but also
exceeded our profitability goals, achieving pro forma
profitability for the fourth quarter of 2001. 

When we founded CoStar Group in 1987, we believed 
we could meet commercial real estate professionals’
need for reliable, comprehensive online market informa-
tion and bring tremendous cost savings and efficiency 
to the process. 

Since 1993, we have grown from a single market with a
few hundred customers, to 50 markets and thousands 
of customers. Our product offerings have expanded from
one — CoStar PropertyTM — to seven major revenue pro-
ducers. Today, CoStar is an integral part of the commer-
cial real estate business, providing essential information
to our customers’ leasing, sales and valuation processes. 

The industry’s adoption of CoStar as the centralized,
Internet-based information clearinghouse has greatly
improved the way information is collected and distrib-
uted. The sophisticated technology we have developed
helps brokers and owners access data quickly, dramati-
cally increasing their productivity. In fact, a recent study
conducted by The Wharton School on behalf of the
Society of Industrial and Office Realtors® notes that a sin-
gle, large brokerage firm operating in a major metropoli-
tan area could save in excess of $150,000 a year using
CoStar services.

2 0 0 1   a c c o m p l i s h m e n t s

In 2001, with our national platform substantially complete,
CoStar Group’s activities focused on increasing the pene-
tration of our core products in existing markets, while
striving to achieve operating profitability. The company
showed strong top line and earnings growth despite a
severe downturn in commercial real estate, proving the
resiliency of our business model.  Revenues for the year
ended December 31, 2001 were $72.5 million compared
to $58.5 million for 2000, an increase of $14 million or 
24 percent. 

Our performance improved from a pro forma loss of $(0.42)
a share in the fourth quarter of 2000, to pro forma earnings
of $0.01 a share for the fourth quarter of 2001. We have
consistently reported pro forma results, which exclude only
purchase amortization from our acquisitions and the relat-
ed income tax benefit. 

Market conditions in 2001 were the worst the U.S.
commercial real estate industry has seen in over a
decade. Leasing activity and net absorption — key indica-
tors of our clients’ health — were down sharply in 2001, 
well below their historic averages. We believe CoStar
Group performed well in 2001 despite such adverse
market conditions because our products represent a
substantial cost savings, are mission critical and intro-
duce new revenue opportunities to our customers. The
renewal rate for our core customers — commercial real
estate professionals — remains above 90 percent. 

3

CoStar 

Group,

Inc.

Annual

Report

2001

Between July 2001 and March 2002, CoStar signed long-
term, national renewal and expansion agreements with
many of the industry’s leading firms, including CB Richard
Ellis, Cushman & Wakefield and Grubb & Ellis. 

We introduced two additional products that offer signifi-
cant benefits to our customers. In March 2001, we
released CoStar ConnectTM, a service that licenses CoStar’s
technology and content to commercial real estate firms
and enables them to market their for-lease and for-sale
listings on their company Web site. CoStar Connect
addresses the shortcomings of our competitors’ first-gen-
eration services, which provided little more than a basic
software application. We believe our product is the only
one that provides both state of the art tech-
nology as well as content, relieving cus-
tomers of the time-consuming chore of
inputting and maintaining their listings on
their Web sites. More than 150 customers
are now using CoStar Connect, with many
switching from a competitive service.

The CoStar Office ReportTM, launched in
October 2001, marked the first time CoStar
had ever aggregated its massive building
level data in a published report. An exten-
sion of our CoStar AdvisoryTM analytic
reports, The CoStar Office Report provides
in-depth current and historical data covering over 1,000
sub-markets within 35 of the nation’s major metropolitan
office markets, including details such as absorption rates,
vacancy rates, rental rates, average sales prices, cap
rates, existing inventory and current construction activity.
CoStar offers these quarterly reports for 35 individual
markets and a complete hardbound national edition. 

e x t e n d i n g   l e a d e r s h i p   p o s i t i o n

CoStar Group continues to enjoy a definitive leading mar-
ket position in the commercial real estate information
industry. Over the past two years, CoStar has competed
against dozens of unsuccessful market entrants who,
collectively, lost hundreds of millions of dollars in failed
attempts to challenge our business model. One of the
strongest competitors we’ve faced, RealtyIQ, closed its
doors in 2001. Some of the more recent business models
touted in the market — commercial board-managed
information exchanges — require the broker to manually
input and maintain listings, and limit competitive bro-
kers’ and owners’ access to that information. We don’t
believe a business model that
places the burden on the broker
to maintain listings represents a
viable outsourcing solution.
What’s more, we believe open
access to information is critical
for an efficient marketplace. 

CoStar’s comprehensive data-
base and proactive research
model provide a major competi-
tive advantage in this regard. 
As of December 31, 2001, our
approximately 600 researchers

were tracking over 23 billion square feet of commercial
real estate, or over 950,000 properties; 2.8 billion square
feet of space available for lease; 640,000 sale compara-
bles; 65,000 properties for sale; and 750,000 tenants. 
In addition, CoStar maintains the industry’s largest
proprietary library of digital images, with over 1.3 million
building photos, floor plans and plat maps.

4

CoStar 

Group,

Inc.

Annual

Report

2001

c o m p l e t i n g p r o d u c t   i n t e g r a t i o n

Our next stage of product development is focused on
integrating all of our subscription-based products to a
common Internet platform. CoStar Tenant 4.0 — the first
Web-enabled version of our business-to-business
prospecting product — was released in June 2001.
Concurrently, CoStar COMPS® and CoStar Exchange®
were redesigned with a common platform, enabling cus-
tomers to view similar menus and commands based on
the same intuitive navigation scheme and functionality.

With the planned release of the first Internet version of
our flagship product, CoStar PropertyTM, in fall 2002, our
customers will be able to access all of the CoStar informa-
tion services they subscribe to through a single interface.
In addition, advanced communication features, including
the ability to share information with their clients across
the Internet through CoStar Connect, will deliver signifi-
cant added value for our customers. 

p o s i t i o n i n g   f o r   c o n t i n u e d   g r o w t h

While we enjoy a dominant market position, we believe
CoStar Group is in the early stages of penetrating the
potential market for commercial real estate information
services. In fact, 50 percent of our subscription revenue
contract growth in 2001 came from new customers. The
infrastructure we have in place is highly leverageable,
and our strong balance sheet — we finished 2001 with
$42 million in cash, cash equivalents and short-term
investments and no long-term debt — leaves us well
positioned to exploit the opportunities we’ve identified.
We believe we can continue to produce strong revenue
growth by reaching new customers with our core prod-
ucts and selling additional products to existing cus-
tomers. Additional markets, either domestically or over-
seas, and new products are expected to provide us with
additional opportunities.

Over the past two years, we made significant additions to
our management team through recruitment, acquisitions
and internal promotions. That seasoned group is
arguably the strongest and most experienced team in the
industry. We are now working diligently to upgrade the
depth of our middle management in two core areas —
Research and Sales. 

We plan to increase our sales force by 30 percent this
year and are continuing to invest in comprehensive train-
ing to help our account executives effectively cross-sell
our entire product roster.

A major strength of our business model is our ability 
to grow revenues over a relatively fixed cost structure. 
We believe we are poised to enter the next stage of
sustained growth in revenue and earnings. We are excited
about the opportunities we see for the near and longer
term and look forward to reporting our progress to you. 

Thank you for your continued support.

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

5

CoStar 

Group,

Inc.

Annual

Report

2001

m a j o r s i g n i n g s

Over the past 12 months, CoStar Group signed new
contracts and renewal agreements with many of the
leading national commercial real estate firms, including:

Commercial Real Estate Services 

• CB Richard Ellis
• Cushman & Wakefield
• Grubb & Ellis
• Julien J. Studley Inc.
• Marcus & Millichap
• The Staubach Co.

r e c o g n i t i o n   &   a c h i e v e m e n t s

• 2001 Deloitte & Touche Technology Fast 500

Property Owners

Third consecutive year

• 2001 Deloitte & Touche Technology 

Maryland Fast 50
Third consecutive year

• 2001 Washington Techway Fast 50

• Forbes Best of the Web – B2B, Real Estate

Second consecutive year

• Equity Office
• Prologis
• Vornado Realty Trust 

Lenders/Financial Services

• GMAC Commercial Mortgage
• Fannie Mae

6

CoStar 

Group,

Inc.

Annual

Report

2001

Our 
Products

c o s t a r   p r o p e r t y T M

CoStar Property delivers a complete inventory of office
and industrial properties that subscribers use to research
leasing options, market their properties, and analyze
market conditions and competitive property positions.
With CoStar Property’s comprehensive content, extensive
image library and abundant report options, users can
easily produce high-quality, customized presentations.
Breaking industry news, delivered electronically to cus-
tomers’ desktops, complements the verified listings in
CoStar Property.

c o s t a r   t e n a n t ®

CoStar Tenant is a detailed business-to-business
prospecting and analytical tool providing commercial real
estate professionals with the most comprehensive tenant
information available. CoStar Tenant profiles tenants in
commercial buildings across the United States and pro-
vides updates on lease expirations — one of the prod-
uct’s key features — 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. 

c o s t a r c o m p s ®

CoStar COMPS provides comprehensive, national coverage
of comparable sales information in the commercial real
estate industry. It is the industry’s most comprehensive
database of comparable sales transactions designed for
professionals who need to research property comparables,
identify market trends, expedite the appraisal process and
support property valuations. The service is provided
through a Web-based system that allows users to search
the database on a subscription basis or on demand. 

‘

c o s t a r c o n n e c t T M

CoStar Connect allows commercial real estate firms to
license CoStar’s technology and content to market property
listings on their corporate Web sites. 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 and manages cus-
tomers’ online property information, providing comprehen-
sive coverage of their listings and significantly reducing
their expense of building the Web site content and func-
tionality.

7

CoStar 

Group,

Inc.

Annual

Report

2001

c o s t a r e x c h a n g e ®

CoStar Exchange is an online marketplace for buying
and selling commercial properties. Customers use 
the easily accessible database, which is the industry’s
premier service that includes correlating data on space
availability, tenants, comparable sales and digital
images, to post and search for properties quickly 
and efficiently. The information is distributed through 
a broker-centric model on a Web-based browser and
represents an efficient means for sellers to reach a large
pre-qualified audience and for buyers to more effective-
ly identify target properties.

c o s t a r o f f i c e   r e p o r t T M

The CoStar Office Report provides in-depth current and
historical data covering 35 of the nation’s major metro-
politan office markets. Published quarterly, each market
report includes details such as absorption rates, vacancy
rates, rental rates, average sales prices, cap rates, exist-
ing 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 real estate decisions. The CoStar Office report
is a product of CoStar AdvisoryTM, a line of analytic reports
that provides important market metrics at the market and
sub-market level for the Atlanta and Dallas markets. 

8

CoStar 

Group,

Inc.

Annual

Report

2001

m e t r o p o l i s T M

The Metropolis software system is a single interface that
combines commercial real estate data from multiple
information providers into a comprehensive resource.
The Metropolis software allows a user to input a proper-
ty address and then view detailed information on that
property from multiple information providers, including
CoStar. This technology offers commercial real estate
professionals a simple and convenient solution for inte-
grating a wealth of third-party information and propri-
etary data and is currently available for the Southern
California market.

c o s t a r m a r k e t p l a c e T M

CoStar Marketplace provides an on-line means for the
commercial real estate and related business community
to direct their advertising to the appropriate decision
makers. Customer benefits from this advertising service
include highly targeted distribution, higher visibility and
cost efficiency in delivering advertising materials to tar-
geted audiences.

c o s t a r   a r e s   2 0 0 0 ®

CoStar ARES is a leading contact management and busi-
ness development tool for commercial real estate profes-
sionals. It is a commercial real estate specific add-on to
ACT! 2000, a leading sales software program. As a value-
added application, CoStar ARES is used as an office-wide
repository for contacts, property listings and compara-
bles.  CoStar ARES provides marketing capabilities, inte-
grated reporting and seamless importing of data from
other CoStar products.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 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, 2001 

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.)

2 Bethesda Metro Center, 10th Floor
Bethesda, Maryland 20814
(Address of principal executive offices) (zip code) 

(301) 215-8300
Registrant’s telephone number, including area code 

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

Securities registered pursuant to Section 12(g) of the Act:
Common Stock ($.01 par value) 

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 [X]  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 statement to this Form 10-K.  [X]

Based on the closing price of the common stock on March 15, 2002 on the Nasdaq Stock Market®, the aggregate market

value of registrant’s common stock held by non-affiliates of the registrant was approximately $268.9 million. 

As of March 15, 2002, there were 15,720,883 shares of registrant’s common stock outstanding.

DOCUMENTS INCORPORATED BY REFERENCE 

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, are incorporated by reference into Part III of this Report. 

TABLE OF CONTENTS 

PART I 

Item 1

Business   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   1

Item 2

Properties  .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   8

Item 3

Legal Proceedings  .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   8

Item 4

Submission of Matters to a Vote of Security Holders  .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   8

PART II

Item 5

Market for the Registrant’s Common Stock and Related Stockholder Matters  .   .   .   .   .   .   .   .   .   .   .   .   9

Item 6

Selected Consolidated Financial and Operating Data 

.   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   10

Item 7

Management’s Discussion and Analysis of Financial Condition and Results of Operations  .   .   .   11

Item 7A Quantitative and Qualitative Disclosures about Market Risk  .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   21

Item 8

Financial Statements and Supplementary Data  .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   21

Item 9

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure  .   .   .   21

PART III

Item 10

Directors and Executive Officers of the Registrant  .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   22

Item 11

Executive Compensation  .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   22

Item 12

Security Ownership of Certain Beneficial Owners and Management .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   22

Item 13

Certain Relationships and Related Transactions  .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   22

PART IV

Item 14

Exhibits, Financial Statement Schedules and Reports on Form 8-K  .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   22

Index to Exhibits .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   24

Index to Consolidated Financial Statements .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   F-1

PART I 

Item 1 

Business 

(In this report, the words “we,” “our,” “us,” “CoStar” or the “Company” refer to CoStar Group, Inc. and its sub-

sidiaries. This report also refers to our Web site, but information contained on that site is not part of this report.) 

CoStar Group, Inc. is the leading provider of information services to the U.S. commercial real estate industry. CoStar’s
suite of products offers customers access via the Internet to the most comprehensive, verified database of commercial real
estate information in over 50 U.S. markets. 

Since its founding in 1987, CoStar’s strategy has been to provide commercial real estate professionals with critical
knowledge to complete transactions, by offering the most comprehensive, timely and standardized information on U.S.
commercial real estate. CoStar delivers its content to customers through 10 distinct products and services. Our wide array
of digital service offerings includes a leasing marketplace, a selling marketplace, sales comparable information, data host-
ing for clients’ web sites, decision support, contact management, tenant information, property data integration, property
marketing and industry news. Today, we are creating a centralized digital marketplace where the commercial real estate
industry and related businesses can continuously interact and easily facilitate transactions over the Internet due to efficient
exchange of accurate information supplied by CoStar. 

We have a number of assets that provide a unique foundation for this marketplace, including the most comprehen-
sive, proprietary, national database in the industry; the largest research department in the industry; proprietary technolo-
gy, including in-house product development; a broad suite of digital products and services; and what we believe is the
largest number of participating organizations. Our database has been constructed over more than a decade by a research
department that makes updates daily to our database throughout the year. In addition to our internal efforts to grow the
database, we have obtained and assimilated over 50 proprietary databases. As of December 31, 2001, our database con-
tained  information  on  more  than  23  billion  square  feet  of  commercial  real  estate,  over  640,000  sales  comparables,
approximately 750,000 tenants and covered more than $85 billion in properties for sale. 

Industry Overview 

We believe that the market for commercial real estate information is vast based on the variety, volume and value of
transactions related to commercial real estate. Each transaction has multiple information requirements, and in order to
facilitate transactions, industry participants must have extensive, accurate and current information. Members of the com-
mercial real estate and related business community require daily access to current data such as rental rates, vacancy rates,
tenant movements, sales comparables, supply, new construction, absorption rates and other important market develop-
ments to carry out their businesses effectively. There is a strong need for an efficient marketplace, where commercial real
estate professionals can exchange information, evaluate opportunities using national standardized data, and interact with
each other on a continuous basis. 

A large number of parties involved in the commercial real estate and related business community require extensive

information to conduct their businesses, including: 

• Sales and leasing brokers

• Government agencies’ staff members

• Property owners

• Property managers

• Design and construction professionals

• Real estate developers

• Mortgage-backed security issuers

• Appraisers

• Reporters

• Tenant vendors

• Real estate investment trust managers

• Building services vendors

• Investment bankers

• Commercial bankers

• Mortgage bankers

• Mortgage brokers

• Communications providers

• Insurance companies’ managers

• Institutional advisors

• Investors and asset managers

1

The commercial real estate and related business community generally operates 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, have attempted to collect data
on specific markets and develop software to analyze the information they have independently gathered. This highly frag-
mented 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  an  efficient  digital  marketplace  for  commercial  real  estate  requires  an  infrastructure  including  a
national, standardized database; accurate and comprehensive research capabilities; and intensive, real-time participant
interaction. By combining its extensive database, approximately 600 experienced researchers, technological expertise and
broad customer base, CoStar believes that it has created the platform for this national exchange. Our infrastructure com-
bined with Internet technology has allowed CoStar to develop a truly centralized and interactive digital marketplace. 

CoStar’s Comprehensive, National Database 

CoStar  has  spent  15  years  building  and  acquiring  a  proprietary  database  of  commercial  real  estate  information,

which includes information on leasing, sales, comparable sales, tenants, demand statistics and digital images. 

As of December 31, 2001, our proprietary database covered 50 markets and contained: 

• more than 23 billion square feet of U.S. commercial real estate;

• over 950,000 properties;

• approximately 2.8 billion square feet of space available;

• over 65,000 properties for sale;

• approximately 750,000 tenants occupying commercial real estate space;

• more than 640,000 sales transactions valued at over $769 billion; and

• over 1.3 million high-resolution digital images, 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 comparables

CoStar Research 

• Mortgage and deed information

• For-sale information

• Income and expense histories

• Tenant names

• Lease expirations

• Contact information

• Historical trends

We have developed a sophisticated data collection organization utilizing a multi-faceted research process. In 2001,
our researchers drove over one million miles, conducted hundreds of thousands of on-site building inspections, examined
more than 68 million public records and interviewed millions of tenants, owners and brokers. 

Research Department. As of December 31, 2001, approximately 600 commercial real estate research professionals were
engaged in research for CoStar. Every research employee undergoes an extensive training program to maintain consistent
research methods and processes. 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 mon-
itoring and direct mail. Each researcher is responsible for maintaining the accuracy and reliability of the database. As part of
their update process, researchers develop cooperative relationships with industry professionals that allow them to gather use-
ful information. Because of the importance commercial real estate professionals place on our data and our prominent posi-
tion in the industry, these professionals frequently take the initiative and report transactions to our researchers. 

2

CoStar has an extensive field research effort that permits physical inspection of properties in order to find addition-
al inventory, photograph properties and verify existing information. Some of these researchers use CoStar trucks equipped
with Global Positioning Systems, which use satellites to keep track of the trucks’ location and pinpoint building locations.
Each CoStar truck uses wireless technology to track and transmit field data. A dispatch center in the Company’s Bethesda
office manages the entire day-to-day field operations while using tracking software to monitor each researcher’s progress.
As of December 31, 2001, CoStar had 39 trucks used by field researchers in markets throughout the United States. The
site inspection consists of photographing the building, measuring the building (if necessary), counting parking spaces,
assessing property condition and construction, and gathering tenant information. Certain researchers canvass properties,
interviewing tenants suite by suite. Other researchers conduct fieldwork in county courthouses and public records offices.
In addition, many of our field researchers are photographers who take photographs of commercial real estate properties
for CoStar to add to the collection of CoStar’s digital images in our database. 

License Agreements. We license a small portion of our data from public record providers, and licensing agreements
with these entities provide for our use of a portion of their national property ownership information in the enhancement
and development of various CoStar services. 

Management and Quality Control Systems. In 2001, we continued to implement our automated and non-automat-
ed 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. Our non-automated quality control procedures include: 

• calling our information sources on recently-updated properties to re-verify information;

• reviewing commercial real estate periodicals for transactions to cross-check our research;

• performing periodic research audits and field checks to determine if we correctly canvassed all 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, garnered through

regular client surveys taken from the commercial real estate professionals using our data every day. 

Proprietary Technology 

In-House Product Development and Information Technology Team. As of December 31, 2001, CoStar had a staff
of approximately 65 product development and information technology professionals who focused on developing and cre-
ating enhanced products, designing systems to ensure continuous improvement in data quality, improving the speed of
data delivery, and building infrastructure capable of supporting CoStar’s comprehensive database and image library. In
2001, this team completed the development of several new Web products and enhanced other Web enabled software
products that use the Internet for delivery of content and digital images. On an ongoing basis, these professionals make
modifications to internal applications to implement efficiencies and controls that ultimately produce quality improve-
ments to the database. They regularly implement product enhancements, including expanded features and new graphic
design. To increase the speed of data collection, quality control review and data delivery, the product development and
information technology team makes regular adjustments to internal systems. In addition, this team is responsible for devel-
oping the infrastructure to appropriately support a database with the size and complexity of CoStar’s database. 

Computer and Communications Hardware/Software Systems. We maintain Windows servers in support of the data-
base and a national internal frame relay network to allow remote researchers real-time access to the database. We store
full data back-ups off site. We use client-server software to manage our internal data collection. In addition, over the past
decade we have developed and refined our own software systems, which collect building-specific data, track commercial
real estate companies and individuals in the industry, distribute data and facilitate operations. 

Products and Services 

Our various products and services are described in detail in the following paragraphs. 

CoStar PropertyTM. CoStar Property delivers to subscribers a complete inventory of office and industrial properties
and has fostered the development of our digital leasing marketplace. Subscribers use CoStar Property to research leasing

3

options,  analyze  market  conditions  and  competitive  property  positions,  and  produce  multimedia  client  presentations.
Members of the broader commercial real estate community, including non-CoStar subscribers, utilize CoStar Property
extensively to market their properties. Subscribers can query CoStar Property with any combination of pertinent criteria,
combining any of approximately 100 data fields from categories such as building size, location, building characteristics,
space availability, or ownership. CoStar Property’s search engine scans through hundreds of millions of square feet of
space in a specified market in seconds to find all the properties meeting the search criteria. Our subscribers can select from
over 80 customizable reports, presenting space availability, comparable sales, tenant activity, market statistics, photo-
graphs, and floor plans. Users can export and edit reports, photos and floor plans to help determine the feasibility of a
specific space for the user’s needs. Our clients also use CoStar Property to analyze market conditions by calculating cur-
rent vacancy rates, absorption rates or average rental rates. 

CoStar Tenant®. CoStar Tenant is a detailed business-to-business prospecting and analytical tool for commercial real
estate professionals. Available via the Internet and a desktop application, CoStar Tenant delivers detailed information pro-
filing the tenants occupying commercial buildings by tracking tenants throughout the United States. A key service feature
is lease expiration information. Subscribers use CoStar Tenant to gather information about particular tenants, identify and
target the most likely tenants to lease space, ascertain all tenants in a particular building, understand trends and the under-
lying demand for commercial real estate, locate and target the tenants most likely to need representation for their real
estate requirements, and pinpoint the tenants most likely to buy a particular vendor’s goods and services. 

CoStar COMPS®. CoStar COMPS is a tool for lenders, brokers, appraisers, investors and corporate real estate executives
who need to research property comparables, identify market trends, expedite the appraisal process, support property valua-
tions, and locate prospective customers using the database of buyers, sellers and brokers. CoStar COMPS provides compre-
hensive, national information on comparable sales information in the commercial real estate industry. This service is provided
through a Web-based system and includes information on sale prices, income and expenses, capitalization rates, loan data and
other key details. Customers may search the proprietary database of comparable sale information using multiple search param-
eters, including location, property type, square footage, price range and number of units. Customers receive a report of all rel-
evant properties in the database matching their search criteria, including photographs.

CoStar ExchangeTM. CoStar Exchange is an on-line marketplace for the buying and selling of commercial properties.
As of December 31, 2001, the database contained over 65,000 commercial properties for sale with a combined asset value
of  approximately  $85  billion.  This  information  is  distributed  in  a  broker-centric  model  through  a  secure  Web-based
browser where sellers and brokers of properties are able to list extensive information about their properties for sale on
the site at no cost. The site affords an efficient means for these sellers to reach a large universe of potential buyers. Sellers
of investment-grade properties have the additional option of selecting limited, secure distribution of their properties in
order  to  address  confidentiality  requirements.  The  CoStar  Exchange  service  integrates  the  content  developed  through
years of research under CoStar Property, CoStar Tenant, CoStar COMPS and other CoStar services. 

CoStar ConnectTM. CoStar Connect allows commercial real estate firms to license CoStar’s technology and content
to market property listings on their corporate web sites. This service offers clients access to CoStar’s content and digital
images in a service that seamlessly updates and manages the client’s on-line property information. It enables commercial
real estate professionals to enhance the quality and depth of the listing information on their Web site by incorporating
data fields from CoStar’s national database. CoStar Connect also adds new technology capabilities to company web sites
such as search engines, tailored space queries, space calculators, sophisticated mapping and 360° virtual tours. 

CoStar Office ReportTM. In the fourth quarter of 2001, CoStar began publishing the CoStar Office Report, which
provides in-depth historical and current data covering over 1,000 sub-markets within 35 of the nation’s major metropol-
itan office markets, including details such as absorption rates, vacancy rates, rental rates, average sales prices, cap 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
real estate decisions, accurately value real estate assets, manage facilities efficiently, reduce lending risk, achieve optimum
real estate portfolio performance and compete effectively in the industry. CoStar Office Report is a product of CoStar
Advisory™, a line of analytic reports that provides important market metrics at the market and sub-market level for the
Atlanta and Dallas markets. 

4

CoStar NewsTM. Our Web site, our CoStar services and our e-mail news dispatches have become an accepted source
of reliable industry news. In 2001, we published over 7,700 news stories. Our NewsWire feature keeps clients informed
of late-breaking commercial real estate news such as deals signed, acquisitions and groundbreakings. 

MetropolisTM. The Metropolis software system is a single interface that combines commercial real estate data from
multiple information providers into a comprehensive resource. The Metropolis software allows a user to input a proper-
ty address and then view detailed information on that property from multiple information providers, including CoStar
products. 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 market. 

CoStar MarketplaceTM. CoStar Marketplace provides an on-line means for the commercial real estate and related
business community to direct advertising to the appropriate decision-makers. We currently deliver this service through our
CoStar services and via our Web site. This service benefits our clients by providing them with increased distribution, high-
er visibility, and a more cost-effective way to reach their targeted audience for their advertising materials. 

CoStar ARES 2000®. CoStar ARES 2000 is a leading contact management and business tool for commercial real
estate professionals. CoStar ARES 2000 works in conjunction with ACT! 2000 and turns ACT! into a real estate pro-
ductivity system by providing commercial real estate elements that are not provided by ACT!. Users of CoStar ARES 2000
can import data from other CoStar services into CoStar ARES 2000. 

Clients 

We draw clients from across the commercial real estate and related business community. Commercial real estate bro-
kers have traditionally formed the largest portion of CoStar clients, however, we also provide services to owners, land-
lords, financial institutions, vendors, appraisers, investment banks and other parties involved in commercial real estate.
The following chart lists representative customers in various categories. 

Brokerage

Lenders, Investment Bankers

Appraisers, Accountants

Cushman & Wakefield
CB Richard Ellis
Grubb & Ellis
Jones Lang LaSalle
Insignia/ESG
Julien J. Studley
The Staubach Company
Carter & Associates
Colliers
Binswanger
Marcus & Millichap
Equis
Kennedy-Wilson Properties
Daum Commercial Real Estate
Advantis Real Estate Services
U.S. Equities Realty

REITs

Boston Properties
CarrAmerica
Equity Office Properties
Prentiss Properties
Prologis

Arthur Andersen
KPMG
PricewaterhouseCoopers
Deloitte and Touche

Bankers Trust Company 
Credit Suisse First Boston 
GMAC Commercial Mortgage 
Merrill Lynch 
Bank of America
Wells Fargo
Washington Mutual
World Savings
Fannie Mae

Owners and Developers

Vendors

Hines 
Trammell Crow Company 
TrizecHahn Corporation
Gale & Wentworth
Manulife Financial
Industrial Developments International

IntelliSpace
Kastle Systems

5

Government Agencies

Property Managers

Institutional Advisors,
Asset Manager

County of Los Angeles
Fairfax County Dev. Authority
Montgomery County Dept. of Public Works
NYC Economic Development    
U.S. General Services Administration

Transwestern 
Leggat McCall Properties 
Lincoln Property Company 
PM Realty Group 

AEW Capital Management
Jones Lang LaSalle
Legg Mason
LendLease Real Estate Investments
USAA Real Estate Company 

As of December 31, 2001, no single client accounted for more than 5% of our revenues. Over 90% of our revenues

arise from subscription based clients under long term contracts. 

Sales and Marketing 

As of December 31, 2001, we had over 135 sales, marketing and customer support employees, with the majority of
our direct sales force located in field sales offices. Our sales teams are primarily geographically focused and located in over
27 field sales offices in our largest U.S. markets. Our offices typically serve as the platform for our in-market sales, client
service, and field research operations for their respective regions. The sales force is responsible for selling to new prospects,
renewing existing client contracts and identifying cross-selling opportunities. 

Our sales strategy is to aggressively attract new clients, while providing ongoing incentives for existing clients to sub-
scribe to additional services. Our field salespeople primarily focus on three product areas: Information Solutions, eMedia
and ARES 2000. The Information Solutions sales personnel focus on selling CoStar Property, CoStar Tenant, CoStar
COMPS, CoStar Exchange, CoStar Connect, CoStar Office Reports and Metropolis. Many of these salespeople have sig-
nificant commercial real estate experience, allowing them to take a consultative sales approach. Within this group, we
have a Vice President of major accounts, who focuses solely on meeting the special needs of the Company’s largest clients.
The eMedia sales personnel sell CoStar Connect and CoStar Marketplace. Many of these sales people have an advertis-
ing sales background or experience in commercial real estate. The ARES 2000 sales personnel focus on selling CoStar
ARES 2000. 

We seek to make our services essential to our clients’ businesses. To encourage clients to use our services regularly,
we generally charge fixed monthly amounts rather than fees based on actual system usage. Our clients’ monthly charges
are based on the number of sites, organization size, the company’s business focus, and the number of services to which a
client subscribes. 

Our customer service and support staff is charged with installing and training our client base, as well as ensuring high
client satisfaction by providing on-going support. The customer service and support staff handles all facets of customer
relations and have primary front-line responsibility for customer care. 

Our primary marketing methods include: service demonstrations, direct marketing, trade show and industry events,
print advertising, and client referrals. Direct marketing is the most cost-effective means for us to find prospective clients.
Our direct marketing efforts include direct mail, e-mail and telemarketing, and make extensive use of our unique, pro-
prietary database. Once we have identified a prospective client, we have found the most effective sales method is a serv-
ice demonstration. Our advertising includes traditional print advertising, Internet banners and private network banners.
We use various forms of advertising for brand identity, message reinforcement, and potential client identification. We also
attend industry trade shows and seminars to reinforce our relationships with our core user groups. 

Competition 

The market for information systems and services generally is competitive and rapidly changing. In the commercial

real estate industry, the principal competitive factors for commercial real estate information are: 

• quality and depth of the underlying databases;

• price;

• ease of use, flexibility, and functionality of the software;

• timeliness of the data;

• breadth of geographic coverage and services offered;

6

• perception that the service offered is the industry standard;

• proprietary nature of methodologies, databases and technical resources;

• effectiveness of marketing and sales efforts;

• client service and support;

• vendor reputation;

• brand loyalty among customers; and

• capital resources.

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

• on-line services or Web sites targeted to commercial real estate brokers, buyers and sellers of commercial real estate

properties, insurance companies, mortgage brokers and lenders, such as LoopNet, Inc.;

• publishers and distributors of information services, including regional providers and smaller local providers, and

national print publications, such as Black’s Guide;

• locally controlled real estate boards, exchanges or associations sponsoring property listing services;

• companies that provide software to access commercial real estate information, such as Xceligent Inc.;

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

• consortiums of real estate companies formed to explore opportunities in technology; and

• public record providers.

As  the  digital  real  estate  marketplace  develops,  additional  competitors  (including  companies  which  could  have
greater access to data, financial, product development, technical, and marketing resources than we do) may enter the mar-
ket and competition may intensify. While we believe that we have successfully differentiated ourselves from existing com-
petitors, competition could materially harm our business. 

Proprietary Rights 

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

erty, we depend upon a combination of: 

• trade secret, copyright, trademark and other laws;

• nondisclosure, noncompetition and other contractual provisions with employees and consultants;

• license agreements with customers;

• patent protection; and

• technical measures.

We seek to protect our software’s source code and our database as trade secrets and under copyright law. Although
copyright registration is not a prerequisite for copyright protection, we have filed for copyright registration for our data-
bases, software and other materials. Under current law, the arrangement and selection of data may be protected, but the
actual data itself may not be. We license our database, software and services under license agreements that grant our clients
non-exclusive, non-transferable licenses. These agreements restrict the disclosure and use of our content, images and soft-
ware. In addition, the license agreements prohibit the unauthorized reproduction or transfer of the information and soft-
ware we license. 

We also attempt to protect the secrecy of our proprietary database, our trade secrets and our proprietary informa-
tion  through  confidentiality  and  noncompetition  agreements  with  our  employees  and  consultants.  Our  services  also
include technical measures to discourage and detect unauthorized copying of our intellectual property. 

We have filed trademark applications to register trademarks for a variety of names for the CoStar products and other
marks, and have obtained registered trademarks for a variety of our marks, including “CoStar,” “COMPS,” “CoStar
Tenant,” and “CoStar ARES.” In addition, we have filed a patent application covering certain of our methodologies and
software. 

7

On  September  30,  1999,  CoStar  filed  suit  against  LoopNet,  Inc.,  in  the  U.S.  District  Court  for  the  District  of
Maryland. The complaint asserts, among other things, that LoopNet infringed CoStar’s copyrights by unlawfully dis-
playing and distributing CoStar’s copyrighted photographs on LoopNet’s Web site. On March 14, 2000, the judge issued
a preliminary injunction ordering LoopNet, Inc. to remove CoStar photographs from the LoopNet Web site once CoStar
notifies it of any possible infringement, and that LoopNet require certain repeat offenders to produce evidence of copy-
right ownership before posting any photograph to the LoopNet Web site. On September 28, 2001, the Court issued an
opinion resolving a number of dispositive and non-dispositive issues, leaving the case to proceed to trial, which is cur-
rently scheduled for July 8, 2002. 

Employees 

As of December 31, 2001, we employed 833 employees. None of our employees is represented by a labor union. We

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

Item 2 

Properties 

Our corporate headquarters in Bethesda, Maryland, occupies approximately 60,000 square feet under a lease that
expires on March 14, 2010. We believe that our Bethesda, Maryland, facility will be adequate to meet our requirements
for our headquarters for the foreseeable future. 

In addition to our Bethesda, Maryland, facility, our research operations are headquartered in San Diego, California
and Mason, Ohio. Additionally, we lease office space in a variety of other locations, which generally house our field sales
offices.  These  locations  include,  without  limitation,  the  following:  New  York;  Los  Angeles;  Chicago;  San  Francisco;
Boston;  Newport  Beach;  Philadelphia;  Houston;  Atlanta;  Phoenix;  Southfield,  Michigan;  Cranford,  New  Jersey;
Charlotte, North Carolina; Ft. Lauderdale, Florida; Seattle; Denver; Austin; Dallas; Sacramento, California; Kansas City,
Missouri; Independence, Ohio; Torrance, California; Tustin, California; and Tampa, Florida. 

We do not consider any specific leased location to be material to our operations. We believe that equally suitable

alternative locations are available in all areas where we currently do business. 

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, is likely to have a material adverse effect
on our financial position or results of operations. 

Item 4 

Submission of Matters to a Vote of Security Holders 

We did not submit any matters to a vote of our security holders during the quarter ended December 31, 2001. 

8

PART II 

Item 5 

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

Price Range of Common Stock. Our common stock is traded on the Nasdaq Stock Market® under the symbol
“CSGP.” The following table sets forth, for the periods indicated, the high and low sale price per share of our common
stock on the Nasdaq Stock Market®. 

Year Ended December 31, 2000 

First Quarter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Second Quarter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Third Quarter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Fourth Quarter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Year Ended December 31, 2001

First Quarter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Second Quarter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Third Quarter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Fourth Quarter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

High
$53.69
$39.56
$40.75
$36.69

$30.75
$29.06
$28.05
$24.40

Low
$30.38
$20.38
$24.50
$18.27

$14.00
$15.25
$15.75
$16.30

As of March 15, 2002, there were approximately 118 holders of record of our common stock. On March 15, 2002,

the last sale price reported on the Nasdaq Stock Market® for our common stock was $19.90 per share. 

Dividend Policy. We have never declared or paid any dividends on our common stock. We do not plan to do so in

the foreseeable future. 

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

31, 2001. 

9

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 financial data for the five years ended December 31, 2001. The Statement of
Operations Data we show below for 1999 through 2001 and the Balance Sheet Data for 2000 and 2001 is derived from
audited financial statements that we include later in this report. The Statement of Operations Data for 1997 and 1998
and the Balance Sheet Data for 1997 through 1999 we show below is derived from audited financial statements for those
years, which do not appear in this report. 

1997

1998

1999

2000

2001

Year Ended December 31,

Statement of Operations Data:

Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . .  $ 7,900 
3,413 
Cost of revenues . . . . . . . . . . . . . . . . . . . . . . 

$ 13,900
4,562 

$ 30,234 
13,244 

$ 58,502 
30,202 

$ 72,513 
30,316 

Gross margin. . . . . . . . . . . . . . . . . . . . . . . . . 
Operating expenses . . . . . . . . . . . . . . . . . . . . 

Loss from operations . . . . . . . . . . . . . . . . . . . 
Other income, net . . . . . . . . . . . . . . . . . . . . . 
Income tax benefit . . . . . . . . . . . . . . . . . . . . . 

4,487 
7,786 

(3,299)
33 
0 

9,338
12,864 

(3,526)
341 
0 

16,990 
32,373 

(15,383)
3,106 
0 

28,300 
83,335 

(55,035)
3,335 
2,045 

42,197 
64,923 

(22,726)
1,578 
987 

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  $ (3,266)

$ (3,185)

$ (12,277)

$ (49,655)

$ (20,161)

Net loss per share—basic and diluted . . . . . .  $ (0.57)

$ (0.44)

$

(1.05)

$

(3.28)

$

(1.29)

Weighted average shares outstanding. . . . . . . 

5,722 

7,213 

11,727 

15,137 

15,636 

1997

1998

1999

2000

2001

As of December 31,

Balance Sheet Data:

Cash, cash equivalents and 

short-term investments . . . . . . . . . . . . . . . .  $ 1,069
(1,547)
6,581
3,664
2,917

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

$ 19,667
16,900
27,541
4,338
23,203

$ 94,074
89,153
136,905
17,208
119,697

$ 47,101
35,601
145,871
19,497
126,374

$ 42,002
33,315
123,646
15,627
108,019

1997

1998

1999

2000

2001

As of December 31,

Other Operating Data:

Markets Covered by Database. . . . . . . . . . . . 

14

Number of Subscription Clients. . . . . . . . . . . 

1,123

Billions of Square Feet in Database . . . . . . . . 

6.5

19

1,731

9.1

41

3,612

15.6

51

5,407

21.7

50

6,356

23.0

Buildings in Database . . . . . . . . . . . . . . . . . .  112,335

Images in Database . . . . . . . . . . . . . . . . . . . . 

90,545

175,471

178,827

334,917

349,526

864,920

968,316

950,000

1,300,000

10

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,” which involve many risks and uncertainties that could cause actual results to differ mate-
rially from these statements. Factors that could cause or contribute to such differences include, but are not limited to, suc-
cessful adoption of our products, competition, general economic conditions, changes in the commercial real estate indus-
try, managerial execution, customer retention, development of our sales force, employee retention and our ability to adapt
to technological changes. More information about potential factors that could cause actual results to differ materially
include, but are not limited to, those stated below under the heading “Risk Factors.” 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 filings with the Securities and Exchange Commission
and the consolidated financial statements included in this Annual Report. 

Overview 

CoStar is the leading provider of information services to the U.S. commercial real estate industry. We have created a
digital marketplace where the 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 informa-
tion. Our wide array of digital service offerings includes a leasing marketplace, a selling marketplace, comparable sales
information, decision support, tenant information, property marketing, data hosting for clients’ Web sites, contact man-
agement, property data integration and industry news. Substantially all of our current services are digitally delivered over
the Internet. 

We completed our initial public offering in July, 1998, and received net proceeds of approximately $22.7 million. We
primarily used those net proceeds to fund the geographic and service expansion of our business, including three strategic
acquisitions, and to expand our sales and marketing organization. In May, 1999, we completed a follow-on public offer-
ing and received net proceeds of approximately $97.4 million. We used a portion of those net proceeds to fund the acqui-
sition of COMPS.COM, Inc. (“Comps”) and we expect to use the remainder of the proceeds primarily for development
and distribution of new services, expansion of all existing services across our current markets, geographic expansion in
the U.S. and international markets, strategic acquisitions, working capital and general corporate purposes. 

From 1994 through 2001, we expanded the geographical coverage of our existing services and developed new serv-
ices. 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, and into Atlanta and Dallas/Fort Worth by acquiring
Jamison Research, Inc. In September, 1999, we acquired ARES, a Los Angeles based developer and distributor of ARES
for ACT!. In February, 2000, we acquired Comps. In November, 2000, we acquired First Image Technologies. The more
recent acquisitions are discussed later in this section. 

Since our inception, the development of our business has required substantial investments for the expansion of our
services and the establishment of operating regions throughout the U.S., which has resulted in substantial net losses on an
overall basis. Throughout 1999 and 2000, we experienced a rapid expansion in the number of services that we offer and
the number of regions in which we operate. By the beginning of 2001, we had substantially completed our goal of estab-
lishing a national platform of operating regions and service offerings in 50 market areas from which we believe we can
appropriately meet the needs of the commercial real estate community for comprehensive national building specific infor-
mation. During 2001, we focused on continuing to grow revenue while controlling and reducing costs, in an effort to
reduce operating losses, and ultimately, move our business to profitability. As a result, in the third and fourth quarters of
2001, the Company generated positive earnings before interest, taxes, depreciation and amortization, and at the end of
the fourth quarter of 2001, the Company’s total cash, cash equivalents and short-term investments had increased over the
balance at the end of the third quarter of 2001. We believe that the opportunity to continue to grow revenue from our
existing national platform and services is significant and that a large component of the operating cost structure of the
Company is made up of fixed operating costs. Therefore, based on expected revenue growth and continued cost control,
we believe that during 2002 we can reduce our overall operating losses as compared to 2001 and generate positive oper-
ating cash flows. 

11

We may develop and distribute new services and expand existing services across our current regions and we may
experience continued geographic expansion in U.S. and international markets. The incremental cost of introducing new
services in the future may reduce the profitability of a region or cause it to incur losses. Therefore, while we expect our
current service offerings in existing regions to remain profitable and provide substantial funding for our business, it is pos-
sible that further overall expansion could cause us to generate losses and negative cash flow from operations in the future. 

While our services continue to expand, our CoStar Property, CoStar Tenant and CoStar COMPS services currently gen-
erate the largest portion of our revenue. The CoStar Property, CoStar Tenant and CoStar COMPS subscription contracts gen-
erally have terms of one to three years and renew automatically. Upon renewal, many of the contract rates increase in accor-
dance with contract provisions or as a result of contract renegotiations. To encourage clients to use our services regularly, we
generally charge fixed amounts rather than fees based on actual system usage. We charge our clients based on the number of
sites, organization size, the company’s business focus and the number of services to which a client subscribes. 

Our contract renewal rate historically has exceeded 90% on an annual basis. However, during 2001 many telecom-
munications companies, which represented approximately 6% of our revenues at their peak, discontinued or curtailed
their operations. This has resulted in an increased number of cancellations of our services by these telecommunications
companies. Sales to telecommunications companies currently represent approximately 1% of our revenues. These can-
cellations, together with the impact of general economic conditions on our entire customer base, have resulted in renew-
al rates of approximately 85% over the past 12 months. 

Approximately 94% of our revenues arise from clients under subscription contracts. Our subscription clients pay
contract  fees  on  an  annual,  quarterly,  or  monthly  basis.  We  recognize  this  revenue  over  the  life  of  the  contract  on  a
straight-line  basis  beginning  with  the  installation  or  renewal  date.  Annual  and  quarterly  advance  payments  result  in
deferred revenue, substantially reducing the working capital requirements generated by accounts receivable. 

The Company will apply the new rules on accounting for goodwill and intangible assets deemed to have indefinite lives
beginning in the first quarter of 2002. The Company estimates that the effect of the new rules will be to decrease amortization
expense related to goodwill by approximately $3.7 million in 2002. During 2002, the Company will perform the first of the
required  impairment  tests  of  goodwill  and  intangible  assets  deemed  to  have  indefinite  lives  as  of  January  1,  2002.  The
Company does not expect that these tests will have any effect on our earnings and financial position during 2002. 

Consolidated Results of Operations 

The following table provides our selected consolidated results of operations (in thousands of dollars and as a per-

centage of total revenue) for the indicated periods: 

Year Ended December 31,

1999 

2000

2001

Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  $ 30,234)

100)% $ 58,502)

100)% $ 72,513

100)%

Cost of revenues  . . . . . . . . . . . . . . . . . . . . . . . . . 

13,244)

44)% 30,202)

52)% 30,316

Gross margin  . . . . . . . . . . . . . . . . . . . . . . . . . . . 

16,990)

56)% 28,300)

48)% 42,197

42)%

58)%

Operating expenses

Selling and marketing  . . . . . . . . . . . . . . . . . . 

17,965)

59)% 37,644)

64)% 23,502

32)%

%

Software development  . . . . . . . . . . . . . . . . . . 

1,108)

4)%

3,865)

7)%

5,137

General and administrative  . . . . . . . . . . . . . . 

11,054)

37)% 27,086)

46)% 28,438

Purchase amortization  . . . . . . . . . . . . . . . . . . 

2,246)

Acquired in-process development  . . . . . . . . . 

0)

7)%

0)%

8,928)

5,812)

15)%

10)%

7,846

0

Total operating expenses  . . . . . . . . . . . . . 

32,373)

107)% 83,335)

142)% 64,923

Loss from operations  . . . . . . . . . . . . . . . . . . . . . 

(15,383)

(51)% (55,035)

(94)% (22,726)

Other income, net  . . . . . . . . . . . . . . . . . . . . . . . . 

3,106)

Income tax benefit  . . . . . . . . . . . . . . . . . . . . . . . 

0)

10)%

0)%

3,335)

2,045)

6)%

3)%

1,578

987

7)%

39)%

11)%

0)%

90)%

(31)%

2)%

1)%

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  $(12,277)

(41)% $(49,655)

(85)% $(20,161)

(28)%

12

Comparison of Year Ended December 31, 2001 and Year Ended December 31, 2000 

Revenues. Revenues grew 24% from $58.5 million in 2000 to $72.5 million in 2001. This increase resulted princi-
pally from the further penetration of the potential customer base across our national platform, as well as the successful
cross selling of products into our existing customer base. Revenue from Comps, acquired in February of 2000, grew from
$15.5 million in 2000 to $19.7 million in 2001. Increases in revenue achieved in all major service areas were partially off-
set by a reduction in CoStar Marketplace electronic advertising revenue, which declined from $1.9 million in 2000 to $1.3
million in 2001. 

Gross Margin. Gross margin increased from $28.3 million in 2000 to $42.2 million in 2001. Goss margin as a per-
centage of revenues increased from 48% to 58%. The increase in gross margin and gross margin percentage resulted from
revenue growth combined with the impact of a relatively fixed cost structure for research. As a result of the fixed cost
structure, cost of revenues was relatively unchanged from 2000 to 2001. Purchase price amortization included in cost of
revenues increased from $4.8 million in 2000 to $5.4 million in 2001. 

Selling and Marketing Expenses. Selling and marketing expenses decreased from $37.6 million in 2000 to $23.5 mil-
lion in 2001 and decreased as a percentage of revenues from 64% in 2000 to 32% in 2001. Selling and marketing expens-
es decreased during 2001 as a result of a substantial reduction in advertising and marketing activities, as well as a reduc-
tion  in  operating  costs  associated  with  the  sales  organization,  including  communications,  travel,  and  recruiting  and
decreased personnel costs, particularly in the area of electronic advertising. 

Software Development Expenses. Software development expenses increased from $3.9 million in 2000 to $5.1 mil-
lion in 2001 and remained constant as a percentage of revenues at 7% in 2000 and 2001. The increase in software devel-
opment  expenses  reflects  development  costs  for  the  increased  number  of  products  we  now  support  including  CoStar
COMPS, CoStar Exchange and CoStar Connect, and the increase in support of internal systems to manage the Company’s
growth. 

General and Administrative Expenses. General and administrative expenses increased slightly from $27.1 million in
2000 to $28.4 million in 2001 but decreased as a percentage of revenues from 46% in 2000 to 39% in 2001. The increase
in the amount of general and administrative expenses is primarily due to increased operational expenses associated with
the Company’s expanded operations, including office rent expense and increased depreciation of property and equipment,
offset partially by a decrease in outside services expenses. 

Purchase Amortization. Purchase amortization decreased from $8.9 million in 2000 to $7.8 million in 2001. This
reduction resulted from a decrease in amortization of certain intangible assets, arising as part of the Comps acquisition. 

Acquired  In-Process  Development.  Acquired  in-process  development  costs  of  $5.8  million  in  2000  consist  of

in(process development costs written off as part of the Comps acquisition. 

Other Income, Net. Interest and other income decreased from $3.3 million in 2000 to $1.6 million in 2001. This
decrease was primarily a result of lower total cash, cash equivalents and short-term investment balances and lower inter-
est rates during the year. 

Income Tax Benefit. Income tax benefit decreased from $2.0 million in 2000 to $987,000 in 2001. This decrease
was a result of the reversal of the deferred tax liability incurred in connection with the amortization of identified intangi-
ble assets acquired through acquisitions. 

Comparison of Year Ended December 31, 2000 and Year Ended December 31, 1999 

Revenues. Revenues grew 93% from $30.2 million in 1999 to $58.5 million in 2000. This increase resulted princi-
pally from growth in our client base for the regions we served, expansion of our services in existing regions and the acqui-
sition of Comps. Comps contributed $15.5 million to revenues for 2000. Comps revenue grew approximately 30% after
the acquisition in February of 2000. 

Gross Margin. Gross margin increased from $17.0 million in 1999 to $28.3 million in 2000. While gross margin
increased in total, as a percentage of revenues it decreased from 56% to 48%. The increase in gross margin amounts
resulted principally from significant revenue growth and the acquisition of Comps. The decline in gross margin percent-
ages resulted from lower gross margin percentages in Comps products and an increase in purchase price amortization

13

from the LeaseTrend, Jamison, ARES, Comps and First Image Technologies acquisitions. This amortization increased
from $777,000 in 1999 to $4.8 million in 2000. 

Selling and Marketing Expenses. Selling and marketing expenses increased from $18.0 million in 1999 to $37.6 mil-
lion in 2000 and increased as a percentage of revenues from 59% in 1999 to 64% in 2000. Selling and marketing expens-
es increased as a result of continued expansion of the sales organization and marketing efforts required for growth, par-
ticularly in emerging and acquired regions. In addition, these expenses increased as a result of the non-recurring market-
ing costs surrounding the launch of CoStar Exchange, which began to decline after the second quarter of 2000, and ended
during the fourth quarter of 2000. 

Software Development Expenses. Software development expenses increased from $1.1 million in 1999 to $3.9 mil-
lion in 2000 and increased as a percentage of revenues from 4% in 1999 to 7% in 2000. The increase in software devel-
opment expenses reflects development costs for the increased number of products supported, including CoStar COMPS
and CoStar Exchange. 

General and Administrative Expenses. General and administrative expenses increased from $11.1 million in 1999 to
$27.1 million in 2000 and increased as a percentage of revenues from 37% in 1999 to 46% in 2000. General and admin-
istrative expenses increased due to the hiring of new employees to support our expanded operations and client base and
also the increase in employees due to the acquisition of Comps. During 2000, we recruited and hired four senior level
executives. 

Purchase  Amortization.  Purchase  amortization  increased  from  $2.2  million  in  1999  to  $8.9  million  in  2000.

Purchase amortization increased primarily due to the acquisition of Comps. 

Acquired In-Process Development. Acquired in-process development costs of $5.8 million in 2000 consist of in-

process development costs written off as part of the Comps acquisition. 

Other Income, Net. Interest and other income increased from $3.1 million in 1999 to $3.3 million in 2000. This

increase was primarily a result of a full year of interest earned on the proceeds from the follow-on public offering. 

Income Tax Benefit. An income tax benefit of $2.0 million in 2000 is a result of the reversal of the deferred tax lia-

bility incurred in connection with the amortization of identified intangible assets acquired through recent acquisitions. 

Consolidated Quarterly Results of Operations 

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

2000

2001

Mar. 31

June 30 

Sept. 30 Dec. 31

Mar. 31

June 30 

Sept. 30

Dec. 31

(In Thousands)

Revenues  . . . . . . . . . . . . . . . . . . .  $ 11,372) $ 14,572) $ 15,717) $ 16,841) $17,354) $18,073) $18,447) $18,639)

Cost of revenues  . . . . . . . . . . . . . 

5,977)

7,730)

8,356)

8,139)

7,990)

7,516)

7,532)

7,278)

Gross margin  . . . . . . . . . . . . . . . 

5,395)

6,842)

7,361)

8,702)

9,364)

10,557)

10,915)

11,361)

Operating expenses  . . . . . . . . . . . 

22,090)

21,571)

20,261)

19,413) 17,629)

16,867)

15,728)

14,699)

Loss from operations  . . . . . . . . . 

(16,695)

(14,729)

(12,900)

(10,711)

(8,265)

(6,310)

(4,813)

(3,338)

Other income (expense), net  . . . . 

1,026)

Income tax benefit . . . . . . . . . . . . 

565)

751)

845)

807)

523)

751)

112)

575)

41)

374)

41)

348)

452)

281)

453)

Net loss  . . . . . . . . . . . . . . . . . . . .  $(15,104) $(13,133) $(11,570) $ (9,848) $ (7,649) $ (5,895) $ (4,013) $ (2,604)

Net loss per share – 

basic and diluted  . . . . . . . . . . . 

$(1.06)

$(0.85)

$(0.75)

$(0.64)

$(0.49)

$(0.38)

$(0.26)

$(0.17)

14

2000

2001

Mar. 31

June 30 

Sept. 30

Dec. 31

Mar. 31

June 30

Sept. 30

Dec. 31

(As a Percentage of Total Revenue)

Revenues  . . . . . . . . . . . . . . . . . 

100)% 100)% 100)% 100)% 100)% 100)% 100)% 100)%

Cost of revenues  . . . . . . . . . . . . 

53)% 53)%

Gross margin  . . . . . . . . . . . . . . 

47)% 47)%

53)%

47)%

48)% 46)%

52)% 54)%

Operating expenses  . . . . . . . . . 

194)% 148)% 129)% 115)% 102)%

42)%

58)%

93)%

41)%

59)%

85)%

39)%

61)%

79)%

Loss from operations  . . . . . . . . 

(147)% (101)% (82)% (64)% (48)% (35)% (26)% (18)%

Other income (expense), net  . . . 

Income tax benefit. . . . . . . . . . . 

9)%

5)%

5)%

6)%

5)%

3)%

4)%

1)%

3)%

0)%

2)%

0)%

2)%

2)%

2)%

2)%

Net loss  . . . . . . . . . . . . . . . . . . 

(133)% (90)% (74)% (58)% (44)% (33)% (22)% (14)%

Acquisitions 

LeaseTrend. On January 8, 1999, we acquired all of the outstanding capital stock of LeaseTrend, Inc., a Cincinnati
based provider of commercial real estate information, for approximately $4.5 million in cash and 566,671 shares of our
common stock. The transaction was accounted for as a purchase and the consideration was valued for accounting pur-
poses at approximately $9.2 million including acquisition expenses. 

Jamison Research. On January 22, 1999, we acquired all of the outstanding capital stock of Jamison Research, Inc.,
an Atlanta based provider of commercial real estate information, for approximately $5.3 million in cash and 446,637
shares of our common stock. The transaction was accounted for as a purchase and the consideration was valued for
accounting purposes at approximately $10.3 million including acquisition expenses. 

ARES Development Group, LLC. On September 15, 1999, we acquired all of the membership interests of ARES
Development Group, LLC, Los Angeles based developers and distributors of ARES for ACT!, for $250,000 in cash and
33,208 shares of our common stock. The transaction was accounted for as a purchase and the initial consideration was
valued for accounting purposes at approximately $1,265,000 including acquisition expenses. In addition, the acquisition
agreement provided for $1,000,000 of additional consideration (in a combination of cash and stock) to be paid by CoStar
upon the achievement of certain operating goals by the members of ARES. In February 2000, we issued 2,140 shares of
our common stock and paid $437,500 in cash to the members of ARES for the achievement of the first of the operating
goals by the members of ARES. In October 2000, we issued an additional 2,196 shares of our common stock and paid
an additional $437,500 in cash to the members of ARES for the achievement of the second (and final) of the operating
goals by the members of ARES. 

Comps.  On  February  10,  2000,  we  acquired  all  of  the  outstanding  capital  stock  of  Comps,  a  San  Diego  based
provider of commercial real estate information, for $49,015,905 in cash and 2,259,034 shares of the Company’s com-
mon stock. The acquisition has been accounted for using purchase accounting and has been valued at approximately
$101,379,000 for accounting purposes. The purchase price was allocated primarily to cash, acquired database technolo-
gy and other intangibles, which are being amortized over a period of 2 to 10 years. In connection with the purchase of
Comps, $5,812,000 of the purchase price was allocated to purchased in-process development, and expensed upon acqui-
sition because the technological feasibility of products under development had not been established and no future alter-
native use existed. The acquired in-process development was analyzed through an independent third-party valuation using
the expected cash flow approach. 

Comps reported a cash and short-term investment balance of approximately $49.5 million at September 30, 1999,
which resulted from its initial public offering in May, 1999. Comps also reported long-term debt of approximately $3.8
million at September 30, 1999. Although Comps was experiencing operating losses and negative cash flow from opera-
tions, the remaining cash and short-term investments at the closing date significantly offset the overall cash consideration
for the purchase of Comps by CoStar. The cash portion of the purchase price was obtained by CoStar from the proceeds

15

from the sale of its common stock in a follow-on public offering in May, 1999. During 2000, we made significant invest-
ments to integrate Comps into our organization, including costs to: 

• upgrade computer systems;

• establish network connections;

• convert database structures;

• train personnel; and

• migrate Comps clients to our services.

Since the fourth quarter of 2000, Comps has experienced positive cash flow. CoStar will continue to incur significant

charges to operations as a result of the amortization of intangible assets resulting from the acquisition. 

First Image Technologies. On November 9, 2000, CoStar completed the acquisition of First Image Technologies, Inc.
The primary asset of First Image is the Metropolis software system, a single interface that combines commercial real estate
data from multiple information providers into a comprehensive resource. We acquired all of the outstanding capital stock
of First Image Technologies, Inc. for approximately $665,000 in cash and 9,424 shares of our common stock. The trans-
action was accounted for as a purchase and the initial consideration was valued for accounting purposes at approximately
$950,000 including acquisition expenses. In addition, the acquisition agreement provides for $950,000 of additional con-
sideration (in a combination of cash and stock) to be paid by CoStar upon the achievement of certain operating goals by
the sole stockholder of First Image eighteen months after the original closing date. 

Liquidity and Capital Resources 

Our principal sources of liquidity are cash, cash equivalents and short-term investments. Our cash and cash equiva-
lents balance was $30.7 million and $43.9 million, and our short-term investments balance was $11.3 million and $3.2
million at December 31, 2001 and 2000, respectively. Total cash, cash equivalents, and short-term investments were $42
million at December 31, 2001, a decrease of $5.1 million from $47.1 million at December 31, 2000. The decrease in cash,
cash equivalents and short-term investments was due principally to cash used in operating activities and $2.1 million in
purchases of property and equipment. During the year ended December 31, 2001, we financed our operations and growth
through cash flow from certain regions of our national platform that were profitable and from the proceeds of the fol-
low-on offering. Net cash used in operating activities for the year ended December 31, 2001 was $4.5 million compared
to net cash used in operating activities of $26.8 million for the year ended December 31, 2000. This substantial reduction
in net cash used in operating activities was the result of revenue growth, growth in profit margins, and reductions in oper-
ating expenses. 

Net cash used in investing activities was $10.3 million for the year ended December 31, 2001 compared to net cash
used in investing activities of $2.7 million for the year ended December 31, 2000. This increase in net cash used in invest-
ing activities during 2001 was due to an increase in purchases of short-term investments, which was offset by decreased
levels of spending on capitalized product development costs, purchased building photography and purchased property
and equipment, consisting principally of leasehold improvements, computers and office equipment. We have entered into
numerous operating leases for office space throughout the country, including CoStar’s headquarters, and have commit-
ments of approximately $4.3 million in rent payments for 2002. We currently have no material commitments for capital
expenditures. 

To date, we have grown in part by acquiring other companies, and we may continue to make acquisitions. Our acqui-
sitions may vary in size and could be material to our current operations. We expect to use cash, stock, or other means of
funding to make these acquisitions. 

During the year ended December 31, 2001, we experienced significant losses and negative operating cash flow. In
2002, as the Company continues to emerge from a period of rapid product and geographical expansion, we expect con-
tinued sequential quarterly growth in revenue and a relatively fixed overall operating cost structure. As a result, we expect
reductions in the level of overall operating losses in 2002 as compared to 2001 and positive operating cash flow during
2002. 

Based on current plans, we believe that our available cash combined with positive cash flow from our operations

should be sufficient to fund the Company during the next year. 

16

Although we have experienced losses to date, future profits, to the extent not offset by the benefits of loss carryfor-
wards, would result in income tax liabilities. In addition, we have recorded a valuation allowance for the portion of the
deferred tax assets related to tax loss carryforwards. 

We do not believe the impact of inflation has significantly affected our operations. 

Cautionary Statement Concerning Forward-Looking Statements 

We have made forward-looking statements in this Report that are subject to risks and uncertainties. Forward-look-
ing statements include information that is not purely historic fact, including statements concerning the financial outlook
for 2002 and estimates for the future, our possible or assumed future results of operations generally, and other statements
and information regarding assumptions about our revenues, earnings per share, capital and other expenditures, operat-
ing losses, financing plans, cash flow, capital structure, pending legal proceedings and claims, future economic perform-
ance,  operating  income,  management’s  plans,  goals  and  objectives  for  future  operations  and  growth  and  markets  for
stock. The sections of this Report, which contain forward-looking statements, include “Business,” “Properties,” “Legal
Proceedings” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” 

Our forward-looking statements are also identified by words such as “believes,” “expects,” “anticipates,” “intends,”
“estimates” or similar expressions. You should understand that these forward-looking statements are necessarily estimates
reflecting our judgment, 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. You should understand that the following important factors, in addition to those discussed in “Risk Factors,”
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: competition; technological innovation by competitors; general economic
conditions; events that affect commercial real estate; customer retention; business combinations and strategic alliances by
other industry participants; managerial execution; development of our sales force; growth in commerce conducted over
the Internet; changes in relationships with real estate brokers and other strategic partners; and legal and regulatory issues. 

Accordingly, you should not place undue reliance on forward-looking statements, which speak only as of 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 release publicly any revisions to these forward-looking statements to reflect events or cir-
cumstances after the date of this Report or to reflect the occurrence of unanticipated events. 

Risk Factors 

Our future profitability is uncertain due to our continuing operating losses. We have never recorded an overall oper-
ating profit because the investment required for geographic expansion and new services has exceeded the profits generat-
ed in our markets. Our ability to earn a profit will largely depend on our ability to manage our growth, and to generate
profits that exceed our investment in geographic expansion and new services. In addition, our ability to earn a profit, to
increase revenues, or to control costs could be affected by the factors set forth below. We may not be able to generate rev-
enues or control expenses sufficient to earn a profit, to maintain profits on a quarterly or annual basis, or to sustain or
increase our future revenue growth. 

Our operating results may fluctuate significantly. Our operating results, revenues, and expenses may fluctuate with
general economic conditions and also for many other reasons, such as: successful adoption of the Company’s products;
competition; loss of clients or revenues; changes or consolidation in the real estate industry; the development of our sales
force; managerial execution; cancellations or non-renewals of our products; data quality; employee retention; our invest-
ments in geographic expansion; the timing of new service introductions and enhancements; the timing of investing the net
proceeds from our offerings; acquisitions of other companies or assets; sales, brand enhancement and marketing promo-
tional activities; client training and support activities; changes in client budgets; our ability to control expenses; our invest-
ments in other corporate resources; or changes in accounting policies or practices. 

We may not be able to attract and retain clients. Our success and revenues depend on attracting and retaining sub-
scribers to our services. The CoStar Property, CoStar Tenant and CoStar COMPS subscription contracts, which generate
the largest portion of our revenue, generally range from terms of one to three years. Our clients may decide not to renew

17

or to cancel their agreements as a result of several factors, including: a decision that they have no need for our products;
a decision to use alternative products; pricing and budgetary constraints; consolidation in the real estate industry; data
quality; technical problems; or economic or competitive pressures. If clients decide not to renew or cancel their agree-
ments, and we do not attract new clients, then our revenues will be adversely affected. 

Our operating costs may be higher than we expect. Many of our expenses, particularly personnel costs and occu-
pancy costs, are relatively fixed. Therefore, we may not be able to adjust spending quickly enough to offset any unex-
pected revenue shortfall or increase in expenses. Additionally, we may experience higher than expected operating costs,
including increased personnel costs, selling and marketing costs, occupancy costs, communications costs, travel costs, soft-
ware development costs, outside services costs, and other costs. If operating costs exceed our expectations or cannot be
adjusted accordingly, our business, results of operations and financial condition will be adversely affected. 

Competition could render our services uncompetitive. The market for information systems and services in general is
highly competitive and rapidly changing. The barriers to entry for Web-based services and businesses are low, making it
possible for the number of competitors to proliferate rapidly. Many of our existing competitors, or a number of potential
new competitors, may have longer operating histories in the Internet market, greater name recognition, larger customer
bases, lower prices, easier access to data, greater user traffic and greater financial, technical and marketing resources than
we have. Our competitors may be able to undertake more extensive marketing campaigns, obtain more data, adopt more
aggressive pricing policies, make more attractive offers to potential employees, subscribers, distribution partners and con-
tent providers and may be able to respond more quickly to new or emerging technologies and changes in Internet user
requirements. Increased competition could result in lower revenues and higher expenses, which would reduce our prof-
itability. 

If our data is not accurate, comprehensive or reliable, our business could be harmed. Our success depends on our
clients’ confidence in the comprehensiveness, accuracy, and reliability of the data we provide. The task of establishing and
maintaining accurate and reliable data is challenging. If our data 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. 

If we are unable to hire, retain and continue to develop our sales force, it could have a material adverse effect on our
business. In order to support revenue growth, we need to continue to develop, train and retain our sales force. Our abil-
ity to build and develop a strong sales force may be affected by a number of factors, including: our ability to 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 products; 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 manage a multi-location sales organization. If
we are unable to hire, develop or retain the members of our sales force, or if our sales force is unproductive, it could have
a material adverse effect on our revenues and expenses. 

Cyclical downturns and consolidation in the commercial real estate industry could have an adverse effect on our busi-
ness. Our business may be affected by conditions in the commercial real estate industry, including conditions affecting
businesses that supply or invest in that industry. A decrease in the level of commercial real estate activities could adverse-
ly affect demand for our services. The traditional economic downturns in the commercial real estate industry could also
harm our business. These changes could increase cancellation rates, which could have a material adverse impact on our
operating results. Also, companies in this industry are consolidating, often in order to reduce expenses. Consolidation
could reduce the number of our existing clients, reduce the size of our target market and increase our clients’ bargaining
power. Any of these factors could adversely affect our business. 

General economic conditions could have an adverse effect on our business. 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 inflation,
interest rates, perceived and actual economic conditions, taxation policies, availability of credit, employment levels, and
wage and salary levels. Negative trends in any of these general economic conditions could adversely affect our business.
For example, a recent downturn in the telecommunications industry has forced many of our telecom company clients to
discontinue or curtail their operations, which has resulted in an increased number of cancellations of our services. If other
clients choose to cancel our services as a result of economic conditions, and we do not acquire new clients, our financial
position could be adversely affected. 

18

We may not be able to successfully introduce new products. Our future business and financial success will depend
on our ability to continue to introduce new products into the marketplace. Developing new products imposes heavy bur-
dens on our systems development department, product managers, management and researchers. In addition, successfully
launching and selling a new product, such as CoStar Office Report or CoStar Connect, puts pressure on our sales and
marketing resources. If we are unable to develop new products, then our customers may choose a competitive service over
ours and our business may be adversely affected. In addition, if we incur significant costs in developing new products, or
are not successful in marketing and selling these new products, it could have a material adverse effect on our results of
operations. 

We may not be able to adapt to the rapid technological changes to the Internet and Internet products. To be suc-
cessful, we must adapt to the rapid technological changes to the Internet and Internet products by continually enhancing
our products and services, and introducing and integrating new services and products to capitalize on the technological
advances in the Internet. This process is costly and we cannot assure you that we will be able to successfully integrate our
services and products with the Internet’s technological advances. The products that collect, store, manage and disseminate
commercial real estate information from a centralized database on the Internet were developed recently and continue to
evolve. Our market is characterized by rapidly changing technologies, evolving industry standards; increasingly sophisti-
cated customer needs and frequent new product introductions. These factors are exacerbated by the rapid technological
change experienced in the computer and software industries. Our business increasingly depends on our ability to antici-
pate and adapt to all of these changes, as well as our customers’ ability to adapt to the use of our existing and future serv-
ices and products on the Internet. We could incur substantial costs if we need to modify our services or infrastructure in
order to adapt to these changes, and our customers’ failure to accept these changes could have a material adverse effect
on our revenues. If we incurred significant costs without adequate results or we are unable to adapt to rapid technologi-
cal changes, it could have a material adverse effect on our business. 

Unsatisfactory Internet performance, interruption or failure could have an adverse effect on our business. Our busi-
ness increasingly depends upon the satisfactory performance, reliability and availability of our Web site, the Internet and
the World Wide Web. Problems with our Web site, the Internet or the Web may impede the development of our business
for a number of reasons. As the number of Internet users or their use of Internet resources continues to grow, and as com-
panies deliver increasingly larger amounts of data over the Internet, the Internet’s infrastructure must also grow. Growth
in Internet usage that is not matched by comparable growth of the infrastructure supporting the Internet could result in
slower response time, cause outright failure of the Internet, or otherwise adversely affect usage. In addition, if we experi-
ence technical problems in distributing our products over the Web, including interruption or failure of services provided
by our local exchange carriers or Internet service providers, we could experience reduced demand for our products. 

Temporary  or  permanent  outages  of  our  computers,  software  or  telecommunications  equipment  could  have  an
adverse effect on our business. 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, and telecommunications failures. Any temporary or permanent loss of one or more of these systems or facili-
ties from an accident, equipment malfunction or some other cause could harm our business. If we experience a failure
that results in our not being able to deliver our products to clients, or to update our products, we could experience reduced
demand for our products. 

We may be subject to legal liability for displaying or distributing information. Because the content in our database is
distributed to others, we may be subject to claims for defamation, negligence 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 Web
site through links to other Web sites or information on our Web site 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 lia-
bility, which may require the expenditure of substantial resources and limit the attractiveness of our service to users. 

We may be unable to enforce or defend our ownership and use of intellectual property. The success of our business
depends in large part on the intellectual property involved in our methodologies, database 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

19

relating to the validity, enforceability and scope of protection of proprietary rights in Internet-related businesses are uncer-
tain 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 law-
suits in which we are involved, either as a plaintiff or as a defendant, could cost us a significant amount of time and money.
In addition, if any intellectual property claims are adversely determined, this could result in a material adverse result on
our financial position and our business. 

Litigation in which we become involved may adversely affect our business. Currently and from time to time, we are
involved in litigation incidental to the conduct of our business. We cannot assure you that we will have insurance to cover
our pending claims or our future claims. Any lawsuits in which we are involved could cost us a significant amount of time
and money. If any pending claims or future claims are adversely determined, they could have a material adverse effect on
our financial position or results of operations. 

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, our officers, and other 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, a stock option 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. 

Problems with our software could impair the use of our services. The software underlying our services is complex
and may contain undetected errors. We have previously discovered errors in our proprietary software. Despite testing, we
cannot be certain that errors will not be found in current versions, new versions or enhancements of our software. Any
errors could result in adverse publicity, impaired use of our services, loss of revenues, cost increases and legal claims by
customers. All these factors could seriously damage our business, operating results and financial condition. 

International expansion may result in new business risks. If we expand internationally, this expansion could subject
us to new business risks, including: adapting to the differing business practices and laws in foreign commercial real estate
markets; 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 United States; currency exchange rate fluctuations; and potentially adverse tax con-
sequences. 

We may not be able to manage successfully our geographic expansion. Our future business and financial success will
depend on our ability to manage our geographic expansion. Our efforts to manage expanded growth must occur while
information technology is rapidly changing. These efforts impose additional burdens on our research, systems develop-
ment, sales, and general managerial resources. If we were not able to manage our expanded growth successfully, it would
have a material adverse effect on our profitability. 

If we are unable to provide our clients with training and customer support, our business could be harmed. It is impor-
tant that our clients find our products easy to use. To meet these needs, we provide client training and have developed a
client support network that seeks to respond to client inquiries as soon as possible. If we do not maintain adequate train-
ing and support levels, we could experience reduced demand for our services. 

If there is a reduction in our supply of data from public record providers, our business could be harmed. We license
a small portion of our data from public records providers and other data providers to enhance our products and servic-
es. If we are unable to enter into licensing agreements with these entities, or if this data becomes unavailable for any rea-
son, we could experience increased costs and our financial position could be adversely affected. 

Our increasing use of the Internet and the World Wide Web exposes us to regulatory and other uncertainties. Most
of our clients currently receive their CoStar data via the Internet. This exposes us to various uncertainties arising from the
future course of development of the Internet and the World Wide Web. Governments in the United States and abroad
might adopt laws or regulations applicable to Internet commerce that could harm our business by, for example, regulat-
ing our transmissions over the Internet or exposing our business to new taxes in various jurisdictions. User concerns about

20

the privacy and security of Internet-distributed communications might impede the growth of our business. We may need
to expend substantial resources to protect against security breaches on our Web site or in our Internet communications. 

We face risks associated with legislation in the real estate industry. Real estate is a regulated industry in the United
States. These laws and related regulations, and any newly adopted regulations, may limit or restrict our activities or could
require us to expend significant resources to comply. As the real estate industry evolves in the Internet environment, leg-
islators, regulators and industry participants may advocate additional legislative or regulatory initiatives. Should existing
laws or regulations be amended or new laws or regulations be adopted, we may need to comply with additional legal
requirements and incur resulting costs, or we may be precluded from certain activities. In addition, if we are found to be
in violation of these regulations, we may incur penalties and legal costs or we may be precluded from certain activities. 

Our business depends on our management team’s ability to execute our business plan. Our business depends on the
ability of our assembled management team to successfully execute our business plan. The inability of our management
team to successfully execute our business plan could have an adverse effect on our operations. 

If  we  do  not  generate  sufficient  cash  flows  from  operations,  we  may  need  additional  capital.  To  date,  we  have
financed our operations through cash from profitable operations in certain of our regions, the sale of our stock and bor-
rowing money. If we do not generate enough cash from operations to finance our business in the future, we will need to
raise additional funds through public or private financing. Selling additional equity securities could dilute the equity inter-
ests of our stockholders. If we borrow money, we will have to pay interest and agree to restrictions that may limit our
operating flexibility. We may not be able to obtain funds needed to finance our operations at all or may be able to obtain
funds only on unattractive terms. If we require additional funds and are not able to obtain such funds, it would have a
material adverse effect on our operations. 

Market volatility may have an adverse effect on our stock price. The trading price of our common stock has fluctu-
ated 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: 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; regulatory
developments; and economic or other factors. In addition, in recent years, the stock market in general, and the shares of
Internet-related and other technology companies in particular, have experienced extreme price fluctuations. This volatili-
ty 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. 

Stock ownership by executive officers and directors provides substantial influence over matters requiring a vote of
stockholders. Our executive officers and directors, and entities affiliated with them, beneficially own a sufficient number
of shares of our outstanding common stock to exercise substantial influence over the election of directors and other mat-
ters requiring a vote of stockholders. This concentrated ownership might delay or prevent a change in control and may
impede or prevent transactions in which stockholders might otherwise receive a premium for their shares. 

Item 7A  Quantitative and Qualitative Disclosures About Market Risk 

We do not have significant exposure to market risks associated with changes in interest rates related to cash equiva-

lent securities held as of December 31, 2001. 

Item 8 

Financial Statements and Supplementary Data 

Financial Statements meeting the requirements of Regulation S-X are set forth beginning at page F-1. 

Item 9 

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 

Not applicable. 

21

PART III 

Item 10  Directors and Executive Officers of the Registrant 

The information required by this Item is incorporated by reference to our Proxy Statement. 

Item 11 

Executive Compensation 

The information required by this Item is incorporated by reference to our Proxy Statement. 

Item 12 

Security Ownership of Certain Beneficial Owners and Management 

The information required by this Item is incorporated by reference to our Proxy Statement. 

Item 13  Certain Relationships and Related Transactions 

The information required by this Item is incorporated by reference to our Proxy Statement. 

PART IV 

Item 14 

Exhibits, Financial Statement Schedules and Reports on Form 8-K 

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

Financial Statements.

(a)(2) All schedules are omitted because they are not applicable or not required or because the required informa-
tion is incorporated here by reference or included in the financial statements or related notes included else-
where 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.

(b) We did not file any reports on Form 8-K during the quarter ended December 31, 2001.

22

Pursuant to the requirements of Section 13 of the Securities Exchange 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 Bethesda,
State of Maryland, on the 27th day of March, 2002. 

SIGNATURES 

COSTAR GROUP, INC.

By: 

/s/

Andrew C. Florance
Chief Executive Officer and President

KNOW ALL PERSONS BY THESE PRESENTS, that each individual whose signature appears below constitutes
and appoints Andrew C. Florance and Frank A. Carchedi 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 and about the premises, as fully to 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 Exchange Act of 1934, as amended, this report has been signed by the

following persons in the capacities indicated on the dates indicated. 

Signature

/s/
Michael R. Klein

/s/
Andrew C. Florance

Capacity

Date

Chairman of the Board 

March 27, 2002

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

March 27, 2002

/s/
Frank A. Carchedi

Chief Financial Officer
(Chief Financial and Accounting Officer)

March 27, 2002

/s/
David Bonderman

/s/
Warren H. Haber

/s/
Josiah O. Low, III

/s/
John Simon

Director 

March 27, 2002

Director 

March 27, 2002

Director 

March 27, 2002

Director 

March 27, 2002

23

Exhibit No.

Description

INDEX TO EXHIBITS 

2.1

2.2

3.1

3.2

3.3

4.1

*10.1

*10.2

*10.3

*10.4

*10.5

*10.6

10.7

10.8

10.9

10.10

10.11

21.1

23.1

24.1

Agreement and Plan of Merger by and among CoStar Group, Inc., COMPS.COM, Inc., and AcqSub,
Inc., dated as of November 3, 1999 (Incorporated by reference to Exhibit 2.1 to the Current Report of
the Registrant on Form 8-K (File No. 0-24531) filed with the Commission on November 17, 1999).

Side  Letter,  dated  February  10,  2000,  by  and  between  CoStar  Group,  Inc.  and  Christopher  Crane
(Incorporated by reference to Exhibit 2.2 to the Registrant’s Report on Form 10-Q dated March 31,
2000).

Restated Certificate of Incorporation (Incorporated by reference to Exhibit 3.1 to Amendment No. 4 to
the  Registration  Statement  on  Form  S-1  of  the  Registrant  (Reg.  No.  333-47953)  filed  with  the
Commission on June 30, 1998 (the “1998 Form S-1”)).

Certificate of Amendment of Restated Certificate of Incorporation (Incorporated by reference to Exhibit
3.1 to the Registrant’s Report on Form 10-Q dated June 30, 1999).

Amended and Rested By-Laws (Incorporated by reference to Exhibit 3.2 to the 1998 Form S-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 (the “1999 10-K”)).

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 dated June 30, 2001).

Employment Agreement for Andrew C. Florance (Incorporated by reference to Exhibit 10.2 to the 1998
Form S-1).

Employment Agreement for Frank A. Carchedi (Incorporated by reference to Exhibit 10.3 to the 1998
Form S-1).

Employment Agreement for David M. Schaffel (Incorporated by reference to Exhibit 10.4 to the 1998
Form S-1).

Employment Agreement for Larry Dressel (Incorporated by reference to Exhibit 10.1 to the Registrant’s
Report on Form 10-Q dated September 30, 2000).

Employment Terms for Craig Farrington (Incorporated by reference to Exhibit 10.7 to the Registrant’s
Report on Form 10-K for the year ended December 31, 2000).

Registration Rights Agreement (Incorporated by reference to Exhibit 10.7 to the 1998 Form S-1).

Office Lease, dated August 12, 1999, between CoStar Realty Information, Inc. and Newlands Building
Ventures, LLC (Incorporated by reference to Exhibit 10.2 to the Registrant’s Report on Form 10-Q dated
September 30, 1999).

Office Building Lease, dated January 31, 1999, between Comps, Inc. and Comps Plaza Associates, L.P.
(Incorporated by reference to Exhibit 10.14 to the Registration Statement of Comps on Form S-1 (Reg.
No. 333-72901) filed with the Commission on April 5, 1999 (the “Comps Form S-1”)).

First Amendment to Lease, dated March 22, 1999, between Comps, Inc. and Comps Plaza Associates,
L.P. (Incorporated by reference to Exhibit 10.14.1 to the Comps Form S-1).

Sublease  Agreement,  dated  June  28,  1999,  between  Comps,  Inc.  and  Pulse  Engineering,  Inc.
(Incorporated by reference to Exhibit 10.11 to the 1999 10-K).

Subsidiaries of the Registrant (filed herewith).

Consent of Independent Auditors (filed herewith).

Powers of Attorney (Included in the Signature Pages to the Report).

*Management Contract or Compensatory Plan or Arrangement.

24

COSTAR GROUP, INC.
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS 

COSTAR GROUP, INC

Report of Independent Auditors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2

Consolidated Statements of Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3

Consolidated Balance Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4

Consolidated Statements of Stockholders’ Equity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-5

Consolidated Statements of Cash Flows. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-6

Notes to Consolidated Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-7

F-1

REPORT OF INDEPENDENT AUDITORS 

Board of Directors
CoStar Group, Inc. 

We have audited the accompanying consolidated balance sheets of CoStar Group, Inc. as of December 31, 2000 and
2001, and the related consolidated statements of operations, stockholders’ equity and cash flows for each of the three
years in the period ended December 31, 2001. These financial statements are the responsibility of the Company’s man-
agement. Our responsibility is to express an opinion on these financial statements based on our audits. 

We conducted our audits in accordance with auditing standards generally accepted in the United States. Those stan-
dards 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 dis-
closures in the financial statements. An audit also includes assessing the accounting principles used and significant esti-
mates 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, 2000 and 2001, and the consolidated results of their operations
and their cash flows for each of the three years in the period ended December 31, 2001, in conformity with accounting
principles generally accepted in the United States. 

/s/ ERNST & YOUNG LLP 

McLean, Virginia
February 11, 2002 

F-2

COSTAR GROUP, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS 

Year Ended December 31,

1999

2000

2001

Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Cost of revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

$  30,234,213)
13,243,813)

$ 58,502,302)
30,202,464)

$ 72,512,952)
30,316,161)

Gross margin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Operating expenses:

Selling and marketing. . . . . . . . . . . . . . . . . . . . . . 
Software development . . . . . . . . . . . . . . . . . . . . . 
General and administrative . . . . . . . . . . . . . . . . . 
Purchase amortization . . . . . . . . . . . . . . . . . . . . . 
Acquired in-process development. . . . . . . . . . . . . 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Loss from operations. . . . . . . . . . . . . . . . . . . . . . . . . 
Other income (expense):

Loss on disposal of assets. . . . . . . . . . . . . . . . . . . 
Interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . 
Interest income. . . . . . . . . . . . . . . . . . . . . . . . . . . 
Other expense . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Loss before income taxes. . . . . . . . . . . . . . . . . . . . . . 
Income tax benefit. . . . . . . . . . . . . . . . . . . . . . . . . . . 
Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Net loss per share — basic and diluted . . . . . . . . . . . 
Weighted average outstanding shares. . . . . . . . . . . . . 

See accompanying notes. 

16,990,400)

28,299,838)

42,196,791)

17,964,829)
1,108,197)
11,054,402)
2,245,835)
–)
32,373,263)
(15,382,863)

–)
–)
3,106,190)
–)
(12,276,673)
–)
$ (12,276,673)
$(1.05)
11,726,589)

37,644,107)
3,864,380)
27,085,784)
8,928,298)
5,812,000)
83,334,569)
(55,034,731)

(180,721)
(295,880)
3,866,133)
(54,764)
(51,699,963)
2,045,014)
$ (49,654,949)
$(3.28)
15,136,976)

23,502,106)
5,136,734)
28,438,501)
7,845,818)
–)
64,923,159)
(22,726,368)

(21,942)
(18,122)
1,692,404)
(74,563)
(21,148,591)
987,262)
$ (20,161,329)
$(1.29)
15,635,931)

F-3

COSTAR GROUP, INC.
CONSOLIDATED BALANCE SHEETS 

ASSETS

Current assets:

Cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Short-term investments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Accounts receivable, less allowance for doubtful accounts 

of approximately $2,890,000 and $2,483,000 
as of December 31, 2000 and 2001 . . . . . . . . . . . . . . . . . . . . 
Prepaid expenses and other current assets. . . . . . . . . . . . . . . . . . . . 
Total current assets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Property and equipment:

Leasehold improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Furniture, office equipment and research vehicles . . . . . . . . . . . . . . 
Computer hardware and software . . . . . . . . . . . . . . . . . . . . . . . . . 

Accumulated depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Goodwill, intangibles and other assets, net. . . . . . . . . . . . . . . . . . . . . . 
Deposits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Total assets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:

Accounts payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Accrued wages and commissions . . . . . . . . . . . . . . . . . . . . . . . . . . 
Accrued expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Total current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Deferred taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Stockholders’ equity:

Preferred stock, $.01 par value, 2,000,000 shares 

December 31,

2000

2001

$ 43,925,195)
3,176,047)

$ 30,746,087)
11,256,115)

6,148,399)
861,613)
54,111,254)

2,074,122)
7,054,810)
12,038,698)
21,167,630)
(6,474,886)
14,692,744)
76,658,067)
408,561)
$145,870,626)

$ 1,417,199)
5,093,220)
7,049,886)
4,949,289)
18,509,594)
987,262)

5,982,896)
956,709)
48,941,807)

2,487,531)
7,288,998)
13,489,455)
23,265,984)
(11,390,271)
11,875,713)
62,471,547)
356,914)
$123,645,981)

$   1,216,823)
4,985,866)
4,891,786)
4,532,285)
15,626,760)
–)

authorized, none outstanding. . . . . . . . . . . . . . . . . . . . . . . . . . 

–)

–)

Common stock, $.01 par value; 30,000,000 shares 

authorized; 15,545,139 and 15,717,883 issued and 
outstanding as of December 31, 2000 and 2001 . . . . . . . . . . . 
Additional paid-in capital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Retained deficit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Total stockholders’ equity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Total liabilities and stockholders’ equity . . . . . . . . . . . . . . . . . . . . . . . . 

See accompanying notes. 

155,451)
202,761,692)
(76,543,373)
126,373,770)
$145,870,626)

157,178)
204,566,745)
(96,704,702)
108,019,221)
$123,645,981)

F-4

COSTAR GROUP, INC.
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY 

Common Stock 

Amount

Paid-In
Capital

Additional 
Retained
Deficit

Total
Stockholders’
Equity

Balance at December 31, 1998 . . . . . . . . . . 
Exercise of stock options. . . . . . . . . . . . 
Stock issued for follow-on 

public offering . . . . . . . . . . . . . . . . 
Stock issued for acquisitions . . . . . . . . . 
Stock issued for compensation . . . . . . . 
Reduction of note receivable 

from stockholder . . . . . . . . . . . . . . 

Net loss

Balance at December 31, 1999 . . . . . . . . . . 
Exercise of stock options. . . . . . . . . . . . 
Stock issued for acquisitions . . . . . . . . . 
Warrants . . . . . . . . . . . . . . . . . . . . . . . . 
Net loss

Balance at December 31, 2000 . . . . . . . . . . 
Exercise of stock options. . . . . . . . . . . . 
Restricted stock grants issued . . . . . . . . 
Net loss

Balance at December 31, 2001 . . . . . . . . . . 

See accompanying notes. 

Shares
8,771,027
121,907

3,019,495
1,046,516
8,330

–
–
12,967,275
269,776
2,272,794
35,294
–
15,545,139
167,739
5,005
–
15,717,883

$ 87,710 $  37,727,345) $(14,611,751) $ 23,203,304)
928,666)

927,447)

1,219

–)

30,195
10,466
83

97,381,198)
10,325,271)
74,887)

–)
–)
–)

97,411,393)
10,335,737)
74,970)

–
–
129,673
2,698
22,728
352
–
155,451
1,677
50
–

19,406)
(12,276,673)
119,696,803)
2,101,983)
54,229,933)
–)
(49,654,949)
126,373,770)
1,716,930)
89,850)
(20,161,329)
$157,178 $204,566,745) $(96,704,702) $108,019,221)

19,406)
–)
146,455,554)
2,099,285)
54,207,205)
(352)
–)
202,761,692)
1,715,253)
89,800)
–)

–)
(12,276,673)
(26,888,424)
–)
–)
–)
(49,654,949)
(76,543,373)
–)
–)
(20,161,329)

F-5

COSTAR GROUP, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS 

Operating activities:

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Adjustments to reconcile net loss to net cash 

used in operating activities:

Depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Amortization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Acquired in-process development . . . . . . . . . . . . . . . 
Loss on disposal of assets . . . . . . . . . . . . . . . . . . . . . 
Income tax benefit. . . . . . . . . . . . . . . . . . . . . . . . . . . 
Provision for losses on accounts receivable . . . . . . . . 
Non-cash compensation charges . . . . . . . . . . . . . . . . 

Changes in operating assets and liabilities:

Accounts receivable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Prepaid expenses and other current assets. . . . . . . . . . . . . 
Deposits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Accounts payable and accrued expenses . . . . . . . . . . . . . . 
Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Net cash used in operating activities . . . . . . . . . . . . . . . 
Investing activities: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Purchases and sales of short-term investments . . . . . . . . . 
Purchases of property and equipment . . . . . . . . . . . . . . . . 
Other assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Acquisitions, net of acquired cash. . . . . . . . . . . . . . . . . . . 
Net cash used in investing activities . . . . . . . . . . . . . . . 
Financing activities: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Payment of long-term liability. . . . . . . . . . . . . . . . . . . . . . 
Net proceeds from public offerings. . . . . . . . . . . . . . . . . . 
Net proceeds from exercise of stock options. . . . . . . . . . . 
Net cash provided by (used in) investing activities . . . . 
Net increase (decrease) in cash and cash equivalents . . . . . . . 
Cash and cash equivalents at beginning of year . . . . . . . . . . . 
Cash and cash equivalents at end of year . . . . . . . . . . . . . . . . 

See accompanying notes. 

Year Ended December 31,

1999

2000

2001

$(12,276,673)

$(49,654,949)

$(20,161,329)

1,148,531)
3,705,238)
–)
–)
–)
974,578)
19,406)

(2,494,232)
(2,057,418)
(230,493)
3,773,811)
(39,410)
(7,476,662)

(18,222,318)
(4,520,375)
(2,198,832)
(9,736,950)
(34,678,475)

–)
97,411,393)
928,666)
98,340,059)
56,184,922)
19,666,887)
$ 75,851,809)

4,261,468)
14,547,368)
5,812,000)
180,721)
(2,045,014)
2,312,089)
–)

(1,329,576)
3,081,479)
1,188,088)
(1,661,917)
(3,538,022)
(26,846,265)

15,046,271)
(11,493,570)
(3,133,033)
(3,071,000)
(2,651,332)

(4,531,000)
–)
2,101,983)
(2,429,017)
(31,926,614)
75,851,809)
$ 43,925,195)

4,915,385)
14,334,482)
–)
21,942)
(987,262)
2,453,046)
–)

(2,287,543)
(95,096)
141,497)
(2,465,830)
(417,004)
(4,547,712)

(8,080,068)
(2,098,354)
(169,904)
–)
(10,348,326)

–)
–)
1,716,930)
1,716,930)
(13,179,108)
43,925,195)
$ 30,746,087)

F-6

COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 

1. ORGANIZATION 

CoStar Group, Inc. (the “Company”) has created a comprehensive, proprietary database of commercial real estate
information for metropolitan areas throughout the United States. Based on its unique database, the Company provides
information to the commercial real estate and related business community and operates within one reportable business
segment. The information in the Company’s database is distributed to its clients under license agreements, which are typ-
ically one to three years in duration. 

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 

BASIS OF PRESENTATION 

The  consolidated  financial  statements  of  the  Company  include  the  accounts  of  LeaseTrend,  Inc.  (“LeaseTrend”)
acquired on January 8, 1999, Jamison Research, Inc. (“Jamison”) acquired on January 22, 1999, ARES Development
Group, LLC (“ARES”) acquired on September 15, 1999, COMPS.COM, Inc. (“Comps”) acquired on February 10, 2000
and First Image Technologies, Inc. (“First Image”) acquired and merged into Comps on November 9, 2000. LeaseTrend
and Jamison were merged into CoStar on December 31, 1999 and ARES was merged into CoStar on December 31, 2000.
Comps was merged into CoStar on December 31, 2001. 

CONSOLIDATION 

The consolidated financial statements include the accounts of the Company and its subsidiaries after elimination of

all significant intercompany transactions. 

USE OF ESTIMATES 

The preparation of financial statements in conformity with accounting principles generally accepted in the United
States requires management to make estimates and assumptions that affect the amounts reported in the financial state-
ments and accompanying notes. Actual results could differ from those estimates. 

RECLASSIFICATIONS 

Certain previously reported amounts have been reclassified to conform to the Company’s current presentation. 

REVENUE RECOGNITION 

Revenue from the sale of licenses is recognized on a straight-line basis over the term of the license, which is typical-
ly from one to three years. Deferred revenue results from advance cash receipts from the sales of licenses and is recognized
over the term of the licenses. 

SIGNIFICANT CUSTOMERS 

No single customer accounted for more than 5% of our revenues as of December 31, 2001. The Company operates

solely within one business segment. 

COMPREHENSIVE INCOME (LOSS) 

For the years ended December 31, 1999, 2000 and 2001, the Company’s net income (loss) reflects comprehensive

income (loss) and accordingly, no additional disclosure is presented. 

ADVERTISING COSTS 

The  Company  expenses  advertising  costs  as  incurred.  Advertising  expense  was  $1,332,000,  $4,028,000,  and

$268,000 for the years ended December 31, 1999, 2000, and 2001, respectively. 

F-7

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

INCOME TAXES 

The Company provides for income taxes under the provisions of Statement of Financial Accounting Standards No.
109 (“FAS 109”). 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 deter-
mined based on the difference between financial statement and tax basis of assets and liabilities using enacted rates expect-
ed to be in effect during the year in which the differences reverse. Valuation allowances are provided against assets, includ-
ing net operating losses, if it is anticipated that some or all of the asset may not be realized through future taxable earn-
ings or implementation of tax planning strategies. 

STOCK-BASED COMPENSATION 

The Company accounts for its stock-based compensation in accordance with APB No. 25, “Accounting for Stock
Issued to Employees” (“APB 25”) using the intrinsic value method. Stock-based compensation related to options grant-
ed  to  non-employees  is  accounted  for  using  the  fair  value  method  in  accordance  with  the  Statement  of  Financial
Accounting Standard No. 123 “Accounting for Stock-Based Compensation” (“FAS 123”). The Company has made pro
forma disclosures required by FAS 123 for all options granted. 

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 United States Government Securities,
substantially all of which are held with two institutions. At December 31, 2001 cash of $956,000 was held in accounts
to support letters of credit. 

SHORT-TERM INVESTMENTS 

The Company accounts for short-term investments in accordance with Statement of Financial Accounting Standards
(SFAS)  No.  115,  “Accounting  for  Certain  Investments  in  Debt  and  Equity  Securities.”  The  Company  determines  the
appropriate classification of investments at the time of purchase and reevaluates such designation as of each balance sheet
date. Short-term investments consist of debt securities that the Company classifies as available for sale. Such securities are
held at the lower of cost or market, based on quoted market rates. The Company acquires short-term highly liquid invest-
ments from government agencies or corporate obligations with high-quality credit ratings. The weighted average maturi-
ties of short-term investments are less than one year. Due to the nature of these short-term investments, cost approximated
fair market value at December 31, 2000 and 2001. 

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 risk of nonpayment of the Company’s accounts receivable
is mitigated by the large size and widespread nature of the Company’s customer base and lack of dependence on individ-
ual customers. The carrying amount of the accounts receivable approximates their net realizable value. The carrying value
of the Company’s financial instruments including cash and cash equivalents, short-term investments, accounts receivable,
accounts payable, and accrued expenses approximates fair value. 

PROPERTY AND EQUIPMENT 

Property and equipment are stated at cost. Depreciation and amortization are calculated on the straight-line method

over the following estimated useful lives of the assets: 

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

Shorter of lease term or useful life
Seven years
Three years
Two to five years

F-8

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

CAPITALIZED PRODUCT DEVELOPMENT COSTS 

Initial costs to develop and produce the Company’s database and software products, including direct labor, contrac-
tors and applicable overhead are capitalized from the time technological feasibility is determined until initial product
release.  Prior  to  technological  feasibility,  such  costs  are  classified  as  software  development  and  expensed  as  incurred.
Ongoing significant enhancements of the products are capitalized subsequent to initial product release. Amortization of
capitalized costs is based on the greater of the amount computed using (a) the ratio of current gross revenues to the sum
of current and anticipated gross revenues, or (b) the straight-line method over the remaining estimated economic life of
the  product,  typically  five  years  after  initial  product  release.  Included  in  amortization  is  approximately  $219,000,
$318,000 and $239,000 of expense related to the capitalized product development costs for the years ended December
31, 1999, 2000 and 2001, respectively. 

GOODWILL, INTANGIBLES AND OTHER ASSETS 

Goodwill and other intangibles represent the unamortized excess of the cost of acquiring companies over the fair
value of such companies’ net tangible assets at the dates of acquisition. Goodwill, acquired technology, and customer base,
which are related to the Company’s acquisitions as described in Note 3, are being amortized on a straight-line basis over
periods ranging from two to ten years. The cost of photography is amortized on a straight-line basis over five years. 

LONG-LIVED ASSETS 

In  accordance  with  Statement  of  Financial  Accounting  Standards  (“SFAS”)  No.  121,  “Accounting  for  the
Impairment of Long-Lived Assets and for Long-Lived Assets to be disposed of”, management periodically reviews, if
impairment indicators exist, the carrying value and lives of long-lived assets. For long-lived assets to be held and used, the
Company bases its evaluation on such impairment indicators as the nature of the assets, the future economic benefit of
the assets, as well as other external market conditions or factors that may be present. If such impairment indicators are
present or other factors exist that indicate that the carrying amount of the asset may not be recoverable, the Company
determines whether an impairment has occurred through the use of an undiscounted cash flows analysis of assets at the
lowest level for which identifiable cash flows exist. If impairment has occurred, the Company recognizes a loss for the dif-
ference between the carrying amount and the estimated value of the asset. The fair value of the asset is measured using
discounted cash flow analysis or other valuation techniques. In addition, the Company evaluates the recoverability of
enterprise goodwill by assessing whether the book value can be recovered through expected and undiscounted cash flows.
No impairment losses have been recorded during the periods presented. 

NET LOSS PER SHARE 

Basic loss per share is based on the weighted average shares outstanding during the period. The calculation of dilut-
ed loss per share reflects the dilutive effects of outstanding stock and other dilutive common stock equivalents if any.
Diluted loss per share is equal to the basic loss per share as the effect on the calculation of basic loss per share assuming
the exercise of common stock equivalents is anti-dilutive. 

NEW ACCOUNTING PRONOUNCEMENTS 

In June 2001, the Financial Accounting Standards Board issued Statements of Financial Accounting Standards No.
141, “Business Combinations”, and No. 142, “Goodwill and Other Intangible Assets”, effective for fiscal years begin-
ning after December 15, 2001. Under the new rule, goodwill and intangible assets deemed to have indefinite lives will no
longer be amortized but will be subject to annual impairment tests in accordance with the Standards. Other intangible
assets will continue to be amortized over their useful lives. The Company will apply the new rules on accounting for
goodwill and intangible assets deemed to have indefinite lives beginning in the first quarter of 2002. The Company esti-
mates that the effect of the new rules will be to decrease amortization expense related to goodwill by approximately $3.7
million in 2002. During 2002, the Company will perform the first of the required impairment tests of goodwill and intan-
gible assets deemed to have indefinite lives as of January 1, 2002. The Company does not expect that these tests will have
any effect on our earnings and financial position during 2002. Any charges taken upon adoption of this statement would
be treated as a cumulative effect change in accounting principle. 

F-9

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

NEW ACCOUNTING PRONOUNCEMENTS (CONTINUED)

In August 2001, the FASB issued SFAS No. 144, “Accounting for the Impairment or Disposal of Long-Lived Assets
(“SFAS No. 144”), which addresses the financial accounting and reporting for the impairment or disposal of long-lived
assets. SFAS No. 144 supersedes SFAS No. 121 but retains SFAS No. 121’s fundamental provisions for recognition/meas-
urement of impairment of long-lived assets to be held and used, and measurement of long-lived assets to be disposed of
by sale. SFAS No. 144 also supersedes the accounting and reporting provisions of APB Opinion No. 30 for segments of
a business to be disposed of but retains the requirement to report discontinued operations separately from continuing
operations and extends that reporting requirement to a component of an entity that either has been disposed of or is clas-
sified as held for sale. SFAS No. 144 is effective for fiscal years beginning after December 15, 2001, and for interim peri-
ods within those fiscal years. The Company does not expect the requirements of SFAS No. 144 to have an impact on the
Company’s financial statements during fiscal year 2002. 

3. ACQUISITIONS 

On January 8, 1999, the Company acquired all of the outstanding capital stock of LeaseTrend, Inc., a Cincinnati
based provider of commercial real estate information, for $4,500,000 in cash and 566,671 shares of the Company’s com-
mon stock. The transaction was accounted for as a purchase and the consideration was valued for accounting purposes
at approximately $9,200,000 including acquisition expenses. 

On  January  22,  1999,  the  Company  acquired  all  of  the  outstanding  capital  stock  of  Jamison  Research,  Inc.,  an
Atlanta  based  provider  of  commercial  real  estate  information,  for  $5,284,000  in  cash  and  446,637  shares  of  the
Company’s  common  stock.  The  transaction  was  accounted  for  as  a  purchase  and  the  consideration  was  valued  for
accounting purposes at approximately $10,300,000 including acquisition expenses. 

On September 15, 1999, the Company acquired all of the membership interests of ARES Development Group, LLC,
Los  Angeles  based  developers  and  distributors  of  ARES  for  ACT!,  for  $250,000  in  cash  and  33,208  shares  of  the
Company’s  common  stock.  The  transaction  was  accounted  for  as  a  purchase  and  the  consideration  was  valued  for
accounting purposes at approximately $1,265,000 including acquisition expenses. In addition, the acquisition agreement
provided for $1,000,000 of additional consideration (in a combination of cash and stock) to be paid by the Company
upon the achievement of certain operating goals by the members of ARES. In February 2000, the Company issued 2,140
shares of its common stock and paid $437,500 in cash to the members of ARES upon the achievement of the first oper-
ating goal by the members of ARES. In October 2000, the Company issued an additional 2,196 shares of its common
stock and paid an additional $437,500 in cash to members of ARES upon the achievement of the second (and final) of
the operating goals by members of ARES. 

On February 10, 2000, the Company acquired all of the outstanding capital stock of COMPS.COM, Inc., a San
Diego  based  provider  of  commercial  real  estate  information,  for  $49,015,905  in  cash  and  2,259,034  shares  of  the
Company’s common stock. The acquisition has been accounted for using purchase accounting and has been valued at
approximately $101,379,000 for accounting purposes. The purchase price was allocated primarily to cash, acquired tech-
nology and other intangibles, which is being amortized over a period of 2 to 10 years. 

On November 9, 2000, CoStar completed the acquisition of First Image Technologies, Inc. The primary asset of First
Image is the Metropolis software system, a single interface that combines commercial real estate data from multiple infor-
mation providers into a comprehensive resource. The Company acquired all of the outstanding capital stock of First
Image Technologies, Inc. for approximately $665,000 in cash and 9,424 shares of the Company’s common stock. The
transaction was accounted for as a purchase and the initial consideration was valued for accounting purposes at approx-
imately $950,000 including acquisition expenses. In addition, the acquisition agreement provides for $950,000 of addi-
tional consideration (in a combination of cash and stock) to be paid by the Company upon the achievement of certain
operating goals by the sole stockholder of First Image. 

The operations of all acquired businesses were included in the Company’s statement of operations after the respec-
tive date of acquisitions. Except for the portion of the purchase price of acquisitions acquired with cash, these transac-
tions have been excluded from the statements of cash flows. 

F-10

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

ACQUISITIONS (CONTINUED)

The Company’s unaudited pro forma condensed consolidated statements of operations for the year ended December
31, 1999 and 2000, assuming the acquisition of Comps and First Image had been consummated as of January 1 of each
period, is summarized as follows: 

For the Year Ended December 31,
2000

1999

Revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Weighted average shares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Net loss per share – basic and diluted. . . . . . . . . . . . . . . . . . . . . . . . . . 

$   30,989,000)
$   (12,694,000)
11,787,000)
$             (1.08) 

$   60,632,000)
$  (55,458,000)
15,398,089)
$             (3.60)

4. GOODWILL, INTANGIBLES AND OTHER ASSETS 

Goodwill, intangibles and other assets consists of the following: 

Capitalized product development costs. . . . . . . . . . . . . . . . . . . . . . . . . 
Accumulated amortization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Building photography. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Acquired database technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Customer base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Tradename . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Goodwill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Accumulated amortization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Goodwill, intangibles and other assets . . . . . . . . . . . . . . . . . . . . . . . . . 

5. RELATED PARTY TRANSACTIONS 

December 31,
2000

$      1,801,146)
(934,767) 
866,379)
4,466,974)
17,649,324)
31,645,487)
4,198,000)
37,567,915)
(19,736,012) 
75,791,688)
$    76,658,067)

December 31,
2001

$     1,795,255)
(1,173,107)
622,148)
4,642,883)
17,949,324)
31,945,487)
4,198,000)
36,967,801)
(33,854,096)
61,849,399)
$   62,471,547)

During 1997, the general partner of Realty Information Group, L. P. (“RIGLP”), a predecessor company to CoStar
Group, Inc., obtained a commitment from a partner for an additional $1,000,000 of subordinated, unsecured credit, bear-
ing interest at the prime interest rate plus 1%. In connection with the commitment, the individual contributing partner
received warrants for the purchase of 45,450 shares of Common Stock. The warrants had a two-year term beyond the
Company’s initial public offering and provided for the purchase of an equivalent number of shares at a price of 10% less
than the price of the stock sold in the initial public offering ($9.00 per share). During February 2000, the partner exer-
cised warrants for the purchase of 45,450 shares by a net exercise and received 35,294 shares. 

F-11

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

6. INCOME TAXES 

Through June 30, 1998 the Company operated as a partnership for federal income tax purposes. The Company paid

no income taxes in 1999, 2000 or 2001. 

December 31,
2000

December 31,
2001

Deferred tax assets:

Reserve for bad debts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Accrued compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Net operating losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Other liabilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Total deferred tax assets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Deferred tax liabilities:

Depreciation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Product development costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Identified intangibles associated with purchase accounting . . . . . . . 
Total deferred tax liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Net deferred tax asset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Net deferred taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

$   1,116,139)
736,056)
32,483,747)
3,553,488)
37,889,430)

(756,039)
(334,596)
(18,092,461)
(19,183,096)
18,706,334)
(19,693,596)
$     (987,262)

$      958,860)
1,540,641)
28,999,888)
2,310,928)
33,810,317)

(772,400)
(240,274)
(12,224,456)
(13,237,130)
20,573,187)
(20,573,187)
$                 0)

A valuation allowance has been established against the related net deferred tax assets due to the uncertainty of real-
ization. The Company’s change in valuation allowance was approximately $13,323,000 and $880,000 during the years
ended December 31, 2000 and 2001, respectively. The valuation allowance and net operating losses at December 31,
2001 have been reduced to reflect return to accrual adjustments. 

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

tax rate as follows: 

Expected federal income tax provision (benefit) at 34% . . . . 
State income taxes, net of federal benefit . . . . . . . . . . . . . . . . 
Increase in valuation allowance . . . . . . . . . . . . . . . . . . . . . . . 
Expenses not deductible for tax purposes. . . . . . . . . . . . . . . . 
Deferred income tax benefit . . . . . . . . . . . . . . . . . . . . . . . . . . 

December 31,
1999
$ (4,174,000)
(567,200)
5,277,100)
(535,900)
$                –)

December 31,
2000

$ (17,577,988)
(2,388,538)
19,405,316)
(1,483,804)
$  (2,045,014)

December 31,
2001
$(7,190,521)
(951,283)
6,964,808)
189,734)
$   (987,262)

At  December  31,  2001,  the  Company  had  net  operating  loss  carryforwards  for  federal  income  tax  purposes  of
approximately $75,090,337, which expire, if unused, from the year 2010 through the year 2021. The tax benefit of
approximately $10.7 million of net operating losses related to stock options will be credited to equity when the benefit of
these  losses  is  realized  through  utilization  of  the  net  operating  loss  carryforwards.  Additionally,  during  2000,  the
Company acquired a company that had net operating losses of approximately $19,359,000, which expire, if unused,
through the year 2019. The use of these acquired net operating losses is subject to limitation imposed by the Internal
Revenue Code and is also restricted to the taxable income of the subsidiaries generating the losses. 

During  1999  and  2000,  the  Company  made  acquisitions,  which  were  reported  using  the  purchase  method  of
accounting. These acquisitions included identified intangible assets, which in accordance with FAS 109, required deferred
taxes and related goodwill to be recorded. Additionally, net operating losses from the acquired companies and the net
operating losses from CoStar prior to the acquisition, totaling approximately $39,600,000, were valued in connection
with  the  acquisition.  The  reversal  of  these  deferred  taxes  in  future  periods  may  result  in  additions  to  the  valuation
allowance and the recording of additional tax expense in accordance with the provisions of SFAS 109, requiring evalua-
tion regarding future realization. 

F-12

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

7. COMMITMENTS 

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, 1999, 2000 and 2001 was approxi-
mately $2,440,000, $5,595,000 and $5,346,000, respectively. 

Future minimum lease payments as of December 31, 2001 are as follows: 

2002 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
2003 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
2004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
2006 and thereafter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

$  4,277,000
3,383,000
3,115,000
2,887,000
11,081,000
$24,743,000

8. SALES OF COMMON STOCK 

On July 1, 1998, the Company completed an initial public offering (“IPO”) of 2,875,000 shares of common stock
(including the over-allotment option) for $9.00 per share. Total proceeds of the IPO were $22,737,000, after deducting
underwriting discounts and commissions of $1,811,000 and offering expenses of $1,326,000. On May 10, 1999, the
Company completed a Follow-On Public Offering of 3,019,495 shares of common stock (including the over-allotment
option) for $34.50 per share. Total proceeds of the Follow-On Public Offering were $97,411,000, after deducting under-
writing discounts and commissions and offering expenses of $1,024,000. 

9. NET LOSS PER SHARE 

The following table sets forth the computation of basic and diluted net loss per share: 

Years Ended December 31, 

1999

2000

2001

Numerator:

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  $ (12,276,673)

$ (49,654,949)

$ (20,161,329)

Denominator:

Denominator for basic earnings per share — 

weighted-average shares . . . . . . . . . . . . . . . . . . . . . . . . 

11,726,589)

15,136,976)

15,635,931)

Effect of dilutive securities:

Dilutive potential common shares. . . . . . . . . . . . . . . . . . . 
Denominator for diluted earnings per share — 

–)

–)

–)

adjusted weighted-average shares . . . . . . . . . . . . . . . . . 

11,726,589)
Basic and diluted net loss per share. . . . . . . . . . . . . . . . . .  $           (1.05)

15,136,976)
$           (3.28)

15,635,931)
$           (1.29)

The weighted average number of shares does not include stock options and warrants outstanding of 1,352,142,
1,716,957 and 1,839,719 as of December 1999, 2000 and 2001, respectively, as their effect would be anti-dilutive for the
periods presented. 

F-13

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

10. EMPLOYEE BENEFIT PLANS 

Option Plan 

In March 1996 RIGLP adopted the 1996 Option and Purchase Plan (the “1996 Plan”), under which 606,000 shares
of Common Stock were reserved for issuance upon the exercise of options granted to officers, executive personnel, direc-
tors and key employees. Certain options previously granted were included in the 1996 Plan. In connection with the IPO,
all of the options granted under the 1996 Plan were replaced with options under the 1998 Plan (as defined below). 

In June 1998 the Company’s Board of Directors adopted the Stock Incentive Plan (the “1998 Plan”) prior to consum-
mation of the IPO. The 1998 Plan provides for the grant of stock and stock options to officers, directors and employees of
the Company and its subsidiaries. Options granted under the 1998 Plan may be incentive or non-qualified stock options. The
exercise price for a stock option may not be less than the fair market value of the Company’s Common Stock on the date of
grant. Upon the occurrence of a Change of Control, as defined in the 1998 Plan, all outstanding unexercisable options under
the 1998 Plan immediately become exercisable. The Company has reserved 3,750,000 shares of common stock for issuance
under the 1998 Plan. Unless terminated sooner by the Board of Directors, the 1998 Plan will terminate in 2008. 

Option activity was as follows: 

Outstanding at December 31, 1998 . . . . . . . . . . . . . . . . . . 
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Exercised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Canceled or expired . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Outstanding at December 31, 1999 . . . . . . . . . . . . . . . . . . 
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Exercised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Canceled or expired . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Outstanding at December 31, 2000 . . . . . . . . . . . . . . . . . . 
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Exercised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Canceled or expired . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Outstanding at December 31, 2001 . . . . . . . . . . . . . . . . . . 
Exercisable at December 31, 2001 . . . . . . . . . . . . . . . . . . . 
Exercisable at December 31, 2000 . . . . . . . . . . . . . . . . . . . 
Exercisable at December 31, 1999 . . . . . . . . . . . . . . . . . . . 

Number of
Shares
877,494)
635,945)
(121,907)
(39,390)
1,352,142)
840,950)
(269,776)
(206,359)
1,716,957)
544,550)
(167,739)
(254,049)
1,839,719)
847,686)
686,887)
531,530)

Price Per
Share

$  9.00-$48.00
$  5.63-$34.95
$  4.07-$48.00

$20.13-$52.13
$  3.45-$30.00
$  5.63-$49.50

$15.06-$29.69
$  3.45-$24.88
$  7.44-$44.75

Weighted-
Average
Exercise Price
$  6.77
$27.17
$  7.62
$18.25
$15.95
$28.43
$  8.26
$26.15
$22.05
$20.88
$10.24
$26.16
$22.20
$19.44
$14.59
$  8.89

The Company follows the disclosure provisions of SFAS No. 123. Accordingly, no compensation cost has been rec-
ognized for the Plan. Had compensation expense related to the Plan been determined based on the fair value at the grant
date for options granted consistent with the provisions of SFAS No. 123, Company’s pro forma net loss and net loss per
share would have been approximately $16,824,000, $57,597,000 and $27,920,000, and $1.43, $3.81 and $1.79 for the
years ended December 31, 1999, 2000 and 2001, respectively. Such pro forma results are not representative of the effects
on operations for future years. 

The weighted average fair value of options granted during 1999 was $19.60 using the Black-Scholes option-pricing
model with the following assumptions: dividend yield 0%, expected volatility of 90%, risk-free interest rate of 5.0%, and
expected life of five years. The weighted average fair value of options granted during 2000 was $20.44 using the Black-
Scholes option-pricing model with the following assumptions: dividend yield 0%, expected volatility of 87%, risk-free
interest rate of 6.3%, and expected life of five years. The weighted average fair value of options granted during 2001 was
$20.88 using the Black-Scholes option-pricing model with the following assumptions: dividend yield 0%, expected volatil-
ity of 100%, risk-free interest rate of 5.5%, and expected life of five years. 

F-14

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

EMPLOYEE BENEFIT PLANS (CONTINUED)

The following table summarizes information regarding options outstanding at December 31, 2001: 

Exercise Price
$ 3.45 - $ 9.00 . . . . . . . . . . . . . . . . . . 
$12.63 - $17.97 . . . . . . . . . . . . . . . . . . 
$18.06 - $18.06 . . . . . . . . . . . . . . . . . . 
$18.31 - $23.06 . . . . . . . . . . . . . . . . . . 
$23.25 - $26.88 . . . . . . . . . . . . . . . . . . 
$27.00 - $30.00 . . . . . . . . . . . . . . . . . . 
$30.75 - $33.13 . . . . . . . . . . . . . . . . . . 
$34.25 - $46.81 . . . . . . . . . . . . . . . . . . 
$52.13 - $52.13 . . . . . . . . . . . . . . . . . . 

Number of
Shares
360,712
90,768
227,500
211,133
234,240
369,250
229,916
114,209
2,000
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1,839,719

Options Outstanding 
Weighted-
Average
Contractual Life
(In Years)
6.3
9.1
9.3
8.4
8.4
8.0
8.3
7.9
8.2
8.0

Weighted-
Average
Exercise Price
6.28
16.82
18.06
21.57
25.01
29.11
31.86
38.09
52.13
22.20

Options Exercised

Number of
Shares
360,712
7,367
0
70,935
56,126
230,080
63,597
58,286
583
847,686

Weighted-
Average
Exercise Price
6.28
15.70
0
21.71
24.78
29.83
31.73
38.65
52.13
19.44

On September 28, 2001, the Company granted a total of 5,000 shares of restricted stock to the non-employee direc-
tors of the Company. The stock grants vest over a four-year period with 25% of the stock vesting on each anniversary of
the grant date. The Company recorded $89,800 in deferred compensation expense. The deferred compensation is calcu-
lated at the fair value on the grant date and is being amortized over the vesting period of the restricted stock. 

Employee 401(k) Plan 

The Company maintains a defined contribution retirement plan for all eligible employees. Effective January 1, 1997,
the Company established a 401(k) Plan (the “401(k)”) to provide retirement benefits for eligible employees. The 401(k)
provides for tax deferred contributions of between l% and 15% of employees’ salaries, limited to a maximum annual
amount as established by the Internal Revenue Service. The Company matched 100% in 1999, 2000 and 2001 of employ-
ee 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, 1999, 2000, and 2001 were approximately $364,000,
$698,000 and $1,209,000, respectively. 

F-15

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

11. QUARTERLY FINANCIAL DATA (UNAUDITED) 

The following table has been prepared from the financial records of the Company, without audit, and reflects all
adjustments that are, in the opinion of management, necessary for the fair presentation of the results of operations for the
interim periods presented (in thousands, except per share amounts). The sum of the per share amounts do not equal the
annual amounts presented in the audited financial statements because of the changes in the weighted average number of
shares outstanding during the year. 

Mar. 31

June 30

Sept. 30

Dec. 31

Mar. 31

June 30

Sept. 30

Dec. 31

2000

2001

(In Thousands)

Revenues . . . . . . . . . . . . . . . .  $ 11,372) $ 14,572) $ 15,717) $16,841) $17,354) $18,073) $18,447) $18,639)
7,278)
Cost of revenues. . . . . . . . . . . 
11,361)
Gross margin . . . . . . . . . . . . . 
14,699)
Operating expenses . . . . . . . . 
(3,338)
Loss from operations . . . . . . . 
281)
Other income (expense), net. . 
Income tax benefit . . . . . . . . . 
453)
Net loss . . . . . . . . . . . . . . . . .  $(15,104) $(13,133) $(11,570) $ (9,848) $ (7,649) $ (5,895) $ (4,013) $ (2,604)
Net loss per share – 

7,516)
7,990)
9,364) 10,557)
17,629) 16,867)
(6,310)
(8,265)
374)
575)
41)
41)

7,730)
6,842)
21,571)
(14,729)
751)
845)

8,139)
8,702)
19,413)
(10,711)
751)
112)

8,356)
7,361)
20,261)
(12,900)
807)
523)

5,977)
5,395)
22,090)
(16,695)
1,026)
565)

7,532)
10,915)
15,728)
(4,813)
348)
452)

basic and diluted. . . . . . . .  $    (1.06) $    (0.85) $    (0.75) $   (0.64) $   (0.49) $   (0.38) $ (0.26) $   (0.17)

F-16

Michael R. Klein

Andrew C. Florance

David Bonderman

Warren H. Haber

Josiah O. Low, III

John Simon

Michael D. Arabe

Frank A. Carchedi

Lawrence J. Dressel

Craig S. Farrington

Carla J. Garrett

Mark A. Klionsky

Mark Policinski

David M. Schaffel

Dean Violagis

Shareholder Information:

Corporate Information:

Stock Listing:
Symbol: CSGP, NASDAQ® Listed

Investor Relations:
Mark A. Klionsky
CoStar Group, Inc.
2 Bethesda Metro Center
Bethesda, MD 20814
(301) 280-3898

Transfer Agent and Registrar:
American Stock Transfer & Trust Company
59 Maiden Lane
New York, NY 10038
(800) 937-5449

Corporate Office:
CoStar Group, Inc.
2 Bethesda Metro Center
Bethesda, MD 20814
(800) 204-5960

Web Site:
www.costar.com

Independent Auditors:
Ernst & Young LLP
8484 Westpark Drive
McLean, VA 22102

Directors:

Michael R. Klein
Chairman of the Board of
Directors, CoStar Group, Inc.,
Partner, Wilmer, Cutler &
Pickering

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

David Bonderman
Principal, Texas Pacific Group

Warren H. Haber
Chairman of the Board and
Chief Executive Officer, 
Founders Equity Inc.

Josiah O. Low, III
Venture Partner, Catterton
Partners IV, L.P.

John Simon
Managing Director, Allen &
Company, Inc.

Officers:

Michael D. Arabe
Senior Vice President,
Customer Service and
Support

Frank A. Carchedi*
Chief Financial Officer 
and Treasurer

Lawrence J. Dressel*
Chief Operating Officer

Craig S. Farrington*
Vice President, CoStar
COMPS

Andrew C. Florance*
President and Chief Executive
Officer

Carla J. Garrett
General Counsel and
Secretary

Mark A. Klionsky
Senior Vice President,
Marketing & Corporate
Communications

Mark Policinski
Vice President, Research

David M. Schaffel*
Chief Information Officer

Dean Violagis
Vice President, Research

*Denotes CoStar Executive
Officer.

www.costar.com

© 2002 CoStar Group, Inc.  All Rights Reserved.