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A field photographer conducts research for the CoStar Group, a company that aggregates information about the commercial real estate industry. (Courtesy of CoStar Group)
Public companies and financial services
CoStar Group
The commercial real estate data firm made two big splashes in 2011. In February, it sold its D.C. headquarters building just a year after buying it, for a $60 million profit. The buyer, GLL Real Estate Partners of Germany, leased the building back to CoStar. The deal marked the the most profitable flip of Washington commercial real estate from the recession to date. In April, CoStar announced plans to acquire data competitor LoopNet in a deal valued at $860 million.
Trivia
CoStar logs more than 5.1 million data changes per day to its commercial real estate databases.
1331 L St. NW
Washington D.C., 20005
202-346-6500
Founded: 1987
President and CEO: Andrew C. Florance
Revenue: $226,260
Assets: $439,650
Employees (local): 1,532 (754)
NOTE: Our methodology for the rankings.