Cohousing started to develop in the UK at the end of the 1990s. The movement has gradually built up momentum and there are now 14 purpose built cohousing communities. A further 40+ cohousing groups are developing projects and new groups are forming all the time. Cohousing communities in the UK range from around 8 households to around 30 households. Most communities are mixed communities with single people, couples and families but some are only for people over 50 and one is only for women over 50 years. The communities themselves range from new developments built to modern eco standards to conversions of everything from farms to Jacobean mansions to former hospital buildings and are in urban, rural and semi- rural locations.