CoStar Group

CoStar Group is a U.S.-based provider of real estate information, analytics, and digital marketplaces, founded in 1987 and headquartered in Washington, D.C. The company operates commercial and residential property listing platforms such as CoStar, Apartments, and Homes, serving users across North America, the U.K., and Australia. CoStar’s business model integrates property data, market research, and online commercial and residential marketplaces, facilitating property transactions for professionals and consumers. The company has expanded its offerings through acquisitions like Domain and Matterport, enhancing its digital and 3D capabilities. CoStar complies with U.S. financial reporting frameworks and privacy standards. In 2025, CoStar Group reported expected annual revenue between $3.23 and $3.24 billion, marking its 58th consecutive quarter of double-digit growth and solidifying its leadership in the property data sector.