CoStar Group, Inc. engages in providing online real estate marketplaces, information, and analytics in the commercial and residential property markets. The company is headquartered in Washington, Washington Dc and currently employs 5,653 full-time employees. The firm provides online marketplaces for commercial real estate, apartment rentals, residential real estate, land for sale and businesses for sale. The firm manages its business geographically in two segments: North America, which includes the United States and Canada, and International, which primarily includes Europe, Asia-Pacific and Latin America. The company also offers online platforms that manage workflow and marketing for residential real estate agents and brokers and provides a portal for homebuyers to view residential property listings. Its services are primarily derived from a database of building-specific information and offer customers specialized tools for accessing, analyzing and using its information. The firm's brands include CoStar, STR, Apartments.com, LoopNet, Homes.com, Homesnap, Ten-X, BizBuySell and Land.com.