Description Mapeley governs properties the government (and others) occupies. The company invests in and manages UK real estate, targeting government and commercial tenants with large-scale management needs. Its portfolio includes more than 1,600 properties valued at more than £2 billion ($3 billion). Tenants include Abbey National and government agencies such as the Identity and Passport Service and HM Revenue & Customs. Properties are located in most major cities throughout the UK. Mapeley was founded in 1999. Fortress Investment Group owns some 75% of Mapeley.