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20, Carlton House Terrace, SW1Y 5AN

25/06152/ADFULLAll OtherApproved
Discharge / amendments

Approved on 9 September 2025

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Details of manufacturer's specification of light fittings (labelled FL1-DZ4, F1-D27 on the Carlton House Terrace elevation, F3-DZ14 on the Warwick House Street elevation and F2-DZ10 and F2-DZ9 on the Cockspur Court Facade) pursuant to condition 5 of planning permission dated 04 November 2024 (RN: 24/01754/FULL).

Submitted
29 August 2025
  1. Received29 Aug
  2. Validated
  3. Consult.
  4. Target
  5. Decided9 Sep

Decided in 11 days (council typically 49)

About this application

This is a planning application at 20, Carlton House Terrace, SW1Y 5AN. Westminster has handled 1,770 applications of this type. This one was decided in 11 days, 5 weeks quicker than Westminster's typical decision time. The site is in the St James's conservation area, with 17 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 276 applications across SJW_22. We hold 969 applications in total for the SW1Y postcode area.

92% of all other applications at City of Westminster were approved. Across all application types, the council typically decides in about 7 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Postcode
SW1Y 5AN
Application type
All Other

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: St James's
  • Listed building: Grade II: The Royal Marines MemorialOn or next to this site · +1 more
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
  • Registered park and garden: St James'S ParkPart of the site
  • Brownfield land register: Admiralty Arch The Mall London SW1A 2DYRegister site at or near this address
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (19)

flood storage areas, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves and heritage coasts.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Westminster

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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