Rom Eiendom is a subsidiary of the Norwegian State Railways responsible for managing the commercial sections of the companies real estate. With headquarters in Oslo, the company manages 740,000 square metres (8,000,000 sq ft). The vast majority of this is in or in connection with railway stations. Rom owns all railway stations in Norway built before 1996.Rom Eiendom was established in 2001 as Rom Eiendomsutvikling, with the responsibility to manage all NSB real estate not related to operation.