Towards Lifetime Neighbourhoods: Designing sustainable communities for all: a discussion paper / Communities and Local Government, 20 November 2007
PDF - http://www.communities.gov.uk/documents/communities/pdf/550658
"This paper discusses the value of lifetime communities that are designed to accommodate people of every age. These communities provide the built environment, infrastructure, housing, services and shared social space that allow people to pursue a high quality of life."