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 constructs and develops apartments and entire residential areas. The Housing Russia segment constructs and develops apartments and entire residential areas, and it operates in the service and maintenance business. The Business Premises and Infrastructure segment build offices, shopping centers, care facilities, roads, bridges, rail and metro stations, harbors and also operates in the area of road and street maintenance. The company was founded in 1912 and is headquartered in Helsinki, Finland.