PRESS RELEASE DETAIL


Dec 18, 2007

CoStar Group and Real Estate Forum Announce 2005 Power Broker Awards

2006-03-13 2006 CoStar Group and Real Estate Forum Announce 2005 Power Broker Awards Top Industry Honors go to Elite Commercial Real Estate Firms and Brokers in 46 Maj...

2006-03-13 2006 CoStar Group and Real Estate Forum Announce 2005 Power Broker Awards Top Industry Honors go to Elite Commercial Real Estate Firms and Brokers in 46 Major U.S. Markets

BETHESDA, MD — CoStar Group, Inc. (NASDAQ: CSGP), the leading provider of commercial real estate information, and Real Estate Forum magazine, the industry's leading news magazine, are proud to announce the 2005 CoStar Power Broker award winners.

Awarded to top brokerage firms and dealmakers in 46 markets across the country, the 2005 Power Brokers are comprised of an elite group of firms and brokers. Last year alone, CoStar Power Brokers conducted billions in lease and sale transactions.

Commercial real estate companies and brokers were recognized in each market based on the total square footage of 2005 office and industrial leasing and sales transactions.

Awards were based on information contained in one of CoStar's suite of products, CoStar Property®, CoStar Commercial MLS™, CoStar COMPS® and CoStar Tenant®.

"Being named a 2005 CoStar Power Broker is a tremendous honor as CoStar is recognized as the leader in commercial real estate information," said Paul Glickman, Executive Vice President of Cushman & Wakefield and 2005 Power Broker winner for New York City Office Leasing. "The CoStar Power Broker Award is highly coveted in the real estate industry."

This year, in addition, the awards are co-sponsored by Real Estate Forum magazine and will be prominently showcased on GlobeSt.com and in Real Estate Forum magazine.

About CoStar Group, Inc.

CoStar Group, Inc. (NASDAQ: CSGP) is the leading provider of information services to commercial real estate professionals in the United States and the United Kingdom. CoStar's suite of services offers customers access via the Internet to the most comprehensive database of commercial real estate information on 66 U.S. markets and the United Kingdom. Based in Bethesda, MD, the Company has approximately 1,000 employees throughout the United States and the United Kingdom, including the largest professional research organization in the industry.


About Real Estate Forum

Over the course of its 60-year history, Real Estate Forum, a publication of Real Estate Media, has evolved into the most respected name in commercial real estate business journalism. Our core mission is to provide quality reporting and in-depth analysis of the issues, people and trends impacting the global property marketplace.

This news release includes "forward-looking statements" including, without limitation, statements regarding CoStar's expectations, beliefs, intentions or strategies regarding the future. These statements are subject to many risks and uncertainties that could cause actual results to differ materially from these statements. More information about potential factors that could cause actual results to differ materially from those discussed in the forward-looking statements include, but are not limited to, those stated in CoStar's filings from time to time with the Securities and Exchange Commission, including CoStar's Form 10-K for the year ended December 31, 2005, under the heading "Risk Factors." All forward-looking statements are based on information available to CoStar on the date hereof, and CoStar assumes no obligation to update such statements.
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