Planning in Westminster
City of Westminster has 56 conservation areas and 10 Article 4 direction areas on the national planning data platform, plus 3,455 listed building outlines.
Conservation areas
56
Article 4 directions
10
Listed building outlines
3,455
Planning applications
–
not published yet
Check what you can build — with AI
Planium reads the conservation area appraisal, Article 4 directions and local plan policies for Westminster and tells you whether your extension, loft conversion or change of use needs planning permission.
Conservation areas
- Adelphidesignated 21 February 2008
- Albert Gatedesignated 21 February 2008
- Aldridge Road Villas And Leamington Road Villasdesignated 21 February 2008
- Bayswaterdesignated 1 November 2010
- Belgraviadesignated 21 February 2008
- Birdcage Walkdesignated 21 February 2008
- Broadway And Christchurch Gardensdesignated 14 July 2008
- Charlotte Street, Westdesignated 21 February 2008
- Chinatowndesignated 21 February 2008
- Churchill Gardensdesignated 21 February 2008
- Cleveland Streetdesignated 21 February 2008
- Covent Gardendesignated 21 February 2008
- Dolphin Squaredesignated 21 February 2008
- Dorset Squaredesignated 14 April 2009
- East Marylebonedesignated 21 February 2008
- Fisherton Street Estatedesignated 21 February 2008
- Grosvenor Gardensdesignated 21 February 2008
- Hallfield Estatedesignated 21 February 2008
- Hanway Streetdesignated 21 February 2008
- Harley Streetdesignated 21 February 2008
- Haymarketdesignated 21 February 2008
- Knightsbridgedesignated 21 February 2008
- Knightsbridge Greendesignated 21 February 2008
- Leicester Squaredesignated 21 February 2008
- Lillington Gardensdesignated 21 February 2008
- Lisson Grovedesignated 21 February 2008
- Maida Valedesignated 21 February 2008
- Mayfairdesignated 21 February 2008
- Medway Streetdesignated 21 February 2008
- Millbankdesignated 21 February 2008
- Molyneux Streetdesignated 21 February 2008
- Paddington Greendesignated 21 February 2008
- Page Streetdesignated 1 November 2010
- Peabody Avenuedesignated 21 February 2008
- Peabody Estates: South Westminsterdesignated 4 March 2008
- Pimlicodesignated 21 February 2008
- Portman Estatedesignated 21 February 2008
- Queens Park Estatedesignated 21 February 2008
- Queenswaydesignated 21 February 2008
- Regency Streetdesignated 21 February 2008
- Regent Streetdesignated 17 January 2008
- Regent's Parkdesignated 21 February 2008
- Royal Parksdesignated 21 February 2008
- Savoydesignated 21 February 2008
- Smith Squaredesignated 21 February 2008
- Sohodesignated 21 February 2008
- St James'sdesignated 21 February 2008
- St John's Wooddesignated 21 February 2008
- Stranddesignated 21 February 2008
- Stratford Placedesignated 21 February 2008
- Trafalgar Squaredesignated 21 February 2008
- Vincent Squaredesignated 21 February 2008
- Westbournedesignated 21 February 2008
- Westminster Abbey And Parliament Squaredesignated 21 February 2008
- Westminster Cathedraldesignated 21 February 2008
- Whitehalldesignated 21 February 2008
Article 4 directions
- 1-27 Bridstow Place, W26 November 1974
- 1-37 Bristol Gardens, W924 March 1981
- 1-47 And 2-56 Abbey Gardens, NW822 August 1969
- 1, 4, 8, 11, 12, 13 Relton Mews, SW726 November 1992
- 168-208 Sussex Gardens, W28 December 1982
- 6-10 Moncorvo Close, SW726 October 1984
- Article 4 Basement Development Permitted Rights Removed31 July 2016
- Article 4 Direction Class E To C3 In Central Activities Zone22 July 2022
- Article 4 Direction Class E To C3 Out Central Activity Zone5 December 2021
- Queens Park Estate29 October 1992
Frequently asked questions
Is my property in a conservation area in Westminster?
City of Westminster has designated 56 conservation areas, listed on this page with their designation dates and appraisal documents where the council publishes them. In a conservation area, permitted development rights are narrower: cladding, some extensions, roof alterations and satellite dishes on the front elevation may need planning permission, and demolition of most buildings needs consent.
What is an Article 4 direction?
An Article 4 direction removes specific permitted development rights in a defined area, so work that would normally not need planning permission — for example replacing windows, changing a house into a small HMO or altering front boundaries — does need an application. Westminster has 10 Article 4 direction areas recorded on planning.data.gov.uk.
How do I check what I am allowed to build?
Start with the designations on the site (conservation area, Article 4, listed building), then the local plan policies and any design codes. Planium can read the council’s appraisal and policy documents and summarise what applies to your project, including whether permitted development is available.
City of Westminster website · All local planning authorities
Source: planning.data.gov.uk (Ministry of Housing, Communities and Local Government) (Open Government Licence v3.0) · Retrieved 2026-10-09