CoStar Group Employee Directory
Real EstateVirginia, United States10001+ Employees
CoStar Group is a real estate information company headquartered in Arlington, Virginia. Founded in 1986, it operates as a global leader in commercial real estate information, analytics, online marketplaces, and 3D digital twin technology, and is listed on the NASDAQ under the symbol CSGP. The company maintains a portfolio of major brands, including CoStar, LoopNet, Apartments.com, Homes.com, Domain, Matterport, STR, Ten-X, and OnTheMarket, serving clients worldwide. Its platforms attracted over 143 million average monthly unique visitors in the third quarter of 2025. CoStar Group employs more than 10,000 people and delivers technology-enabled market intelligence globally.