Atenor SA operates as a real estate development company in Belgium, Hungary, Poland, the Netherlands, France, Portugal, Romania, Luxembourg, Germany, and the United Kingdom. It develops residential and non-residential projects. The company also engages in the installation, maintenance, and repair of equipment, as well as in the renovation of existing buildings. In addition, it develops mixed-use urban projects, including offices, retail, housing, public facilities, and shops. It serves private individuals, businesses, public and local authorities, public and private investors, and companies through real estate agents and local networks, as well as by collaboration with tenants and investors. The company was founded in 1910 and is headquartered in La Hulpe, Belgium.