YIT Oyj engages in the real estate business. It operates through the following segments: Housing Finland and Central and Eastern European Countries (CEE); Housing Russia; and Business Premises and Infrastructure. The Housing Finland and CEE segment develops residential units and properties. The Housing Russia segment constructs apartment and provides maintenance services. The Business Premises and Infrastructure segment builds offices, commercial buildings, warehouses, roads, bridges, terminals, and metro stations. The company was founded in 1912 and is headquartered in Helsinki, Finland.