20, Carlton House Terrace, London, SW1Y 5AN
Approved on 26 September 2025
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
Retrospective amendments to the glazed pavilion at tenth floor terrace level.
- Submitted
- 14 August 2025
- Council
- City of Westminster
- ReceivedSubmitted14 Aug
- ValidatedValidated
- Consult.Consultation
- TargetTarget Date
- DecidedDecided26 Sep
Decided in 43 days (council typically 49)
About this application
This is a planning application at 20, Carlton House Terrace, London, SW1Y 5AN. Westminster has handled 804 applications of this type. This one was decided in 43 days, 6 days quicker than Westminster's typical decision time. The site is in the St James's conservation area, with 17 listed buildings nearby. There has been 1 other application 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.
84% of full planning permission 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
- Full planning permission
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: St James's
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
- 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.
Planning history at this site
14 other applications at this property, newest first.
- 202510 Oct
Installation of external lighting to the eighth and tenth floor terraces.
ApprovedApplication25/06975/FULL - 202518 Sep
Retrospective full application for the installation of pergola structure at L8 terrace, new bi-fold doors at…
ApprovedFull planning permission25/05651/FULL - 202529 Aug
Details of manufacturer's specification of light fittings (labelled FL1-DZ4, F1-D27
ApprovedAll Other25/06152/ADFULL - 202515 Aug
Detailed design of the of entrance doors to the basement car park area including the vehicular entrance and…
ApprovedAll Other25/05797/ADFULL - 202524 Jun
Details of manuafacturer's specification of light fittings (labelled FL1-DZ4, F1-D27
RefusedDischarge of conditions25/03810/ADFULL - 20259 Jun
Detail of land contamination Phase 4 validation report pursuant to condition 4 of planning permission dated…
ApprovedDischarge of conditions25/03891/ADFULL - 202413 Dec
Details terraces, hard and soft landscaping, landscape management plan, and rooting environment pursuant to…
PendingDischarge of conditions24/08704/ADFULL - 202411 Dec
Detailed drawings of a hard and soft landscaping scheme to the eighth and tenth floor terrace areas and…
PendingDischarge of conditions24/08625/ADFULL - 202423 Oct
Amendments to planning permission dated 28th July 2023 (RN 23/02725/FULL
PendingNon-material amendment24/07372/NMA - 20242 May
Details of new doors to the front second floor terrace and rear first floor terrace pursuant to Condition 4…
ApprovedDischarge of conditions24/02923/ADFULL - 202429 Jan
Amendments to planning permission dated 28 July 2023 (23/02725/FULL
RefusedNon-material amendment24/00549/NMA - 20249 Jan
Amendments to planning permission dated 28 July 2023 (23/02725/FULL
RefusedNon-material amendment24/00129/NMA - 202315 Dec
Details of a financial contribution towards the Council's employment and skills service pursuant to Condition…
PendingDischarge of conditions23/08683/ADFULL - 20231 Nov
Installation of six doors to facilitate access onto the existing level 02 south terrace and the installation…
ApprovedFull Planning Permission Application23/07605/FULL
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Around this site
Nearby applications
- 20 Carlton House Terrace London SW1Y 5AN24/07372/NMA · AmendmentAwaiting decision0.0 mi
- 20 Carlton House Terrace London SW1Y 5AN23/08683/ADFULL · ConditionsAwaiting decision0.0 mi
- 20 Carlton House Terrace London SW1Y 5AN24/02923/ADFULL · ConditionsApproved0.0 mi
- 20 Carlton House Terrace London SW1Y 5AN24/08704/ADFULL · ConditionsAwaiting decision0.0 mi
- 20 Carlton House Terrace London SW1Y 5AN24/00549/NMA · AmendmentRefused0.0 mi
For applicants and trades
Contractors near this project
- Avent Roofing ServicesVerifiedWestminsterRoofing0.4 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman1.2 mi
- Orient Construction Consultancy LimitedVerifiedLondon3.7 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering4.7 mi
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