3, St James's Square, London, SW1Y 4JU
Approved on 2 October 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
Extension of lift overrun at roof level and associated works.
- Submitted
- 15 August 2025
- Council
- City of Westminster
- ReceivedSubmitted15 Aug
- ValidatedValidated
- Consult.Consultation
- TargetTarget Date
- DecidedDecided2 Oct
Decided in 48 days (council typically 49)
About this application
This is a planning application for an extension at 3, St James's Square, London, SW1Y 4JU. Westminster has handled 804 applications of this type. This one was decided in 48 days. The site is in the St James's conservation area, with 10 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 284 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 4JU
- Application type
- Full planning permission
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: St James's+1 more
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (21)
flood storage areas, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, 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, heritage coasts and brownfield registers.
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
4 other applications at this property, newest first.
- 202612 Feb
Alterations to the St. James's Square facade including replacement of windows and entrances, at main roof…
ApprovedFull Planning Permission Application26/00858/FULL - 202527 Nov
Replacement and enlargement of one existing rooflight.
ApprovedFull Planning Permission Application25/08682/FULL - 201431 Jan
Alterations to ground floor facade at basement and ground floor levels including creation of second street…
ApprovedApplication for full Planning Permission14/00869/FULL - 200225 Sep
Display for a temporary period of six months of a non-illuminated 'to let' board located on the face of the…
ApprovedAdvertisement consent02/07435/AD7
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
- 3 St James's Square London SW1Y 4JU02/07435/AD7 · AdvertisingApproved0.0 mi
- 3 St James's Square London SW1Y 4JU26/00858/FULL · FullApproved0.0 mi
- 3 St James's Square London SW1Y 4JU25/08682/FULL · FullApproved0.0 mi
- 3 St James's Square London SW1Y 4JU14/00869/FULL · FullApproved0.0 mi
- 7 St James's Square London SW1Y 4JU23/03978/ADLBC · ConditionsRefused0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Avent Roofing ServicesVerifiedWestminsterRoofing0.3 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman1.1 mi
- Orient Construction Consultancy LimitedVerifiedLondon3.8 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering4.8 mi
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