PRESS RELEASE DETAIL


Dec 27, 2007

Catherine Reynolds Joins CoStar Group Board of Directors

2004-06-09 2004 Catherine Reynolds Joins CoStar Group Board of Directors

BETHESDA, MD -- CoStar Group, Inc. (NASDAQ: CSGP), today announced that Cathe...

2004-06-09 2004 Catherine Reynolds Joins CoStar Group Board of Directors

BETHESDA, MD -- CoStar Group, Inc. (NASDAQ: CSGP), today announced that Catherine B. Reynolds has been elected by shareholders to serve on CoStar's Board of Directors.

Reynolds, 46, has been the Chairman, CEO and President of EduCap, Inc., a corporation that provides education financing, since 1989, where she developed a privately funded alternative to government student loan programs. Her creative approach to private educational financing revolutionized student lending and spawned a multi-billion dollar industry.

In addition, Reynolds has been the Chairman and CEO of The Catherine B. Reynolds Foundation, a Washington, DC-based philanthropic organization, since 2000. Prior to that, she was the founder and Chairman of Servus Financial Corporation.

In 2004, Mrs. Reynolds was selected by Business Week as one of the 50 most philanthropic living Americans and the first self-made woman ever to make their list.

"We are pleased to have an innovative thinker like Catherine join our board," stated CoStar President and CEO Andrew C. Florance. "As the founder and leader of two successful businesses, Catherine brings complementary experience and a unique perspective that will be valuable in helping to grow the Company."

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 over 50 U.S. markets, London and the United Kingdom. Based in Bethesda, MD, the company has approximately 900 employees in 37 offices throughout the United States and the United Kingdom, including the largest professional research organization in the industry.

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-Q for the quarter ended March 31, 2004, 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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