TAG Immobilien AG, a real estate company, engages in the acquisition, development, and management of residential real estate properties in Germany. It operates residential flats and apartments. The company also rents commercial real estate properties. The company was formerly known as TAG Tegernsee Immobilien-und Beteiligungs-Aktiengesellschaft and changed its name to TAG Immobilien AG in September 2008. TAG Immobilien AG was founded in 1882 and is headquartered in Hamburg, Germany.