Land in Knightsbridge is for the most part identified by City of Westminster (and by the RBKC, where former Brompton parts are included) as strengthened planning law-governed Conservation Areas: 'Albert Gate', 'Belgravia', 'Knightsbridge' and 'Knightsbridge Green'. Properties must be offered here by developers as refurbished flats or houses meeting the enhanced architectural demands in the local Conservation Areas policy of the Local Plan. Within each many buildings are covered by the similar but separate requirements of being listed. Growing demand has since 2000 persuaded the authority to revise its planning policies to permit roof terraces and basement extensions, for residential facilities from leisure suites to private nightclubs, a degree of economic liberalisation documented by a non-tabloid paper in 2008.