14, St James's Square, SW1Y 4LG

25/03509/FULLFull planning & listed building consentApproved

Full

Approved on 29 July 2026

17 conditions

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

Installation of a new lift shaft within existing lightwell providing access to all levels, creation of a members' room at sixth floor level and a connected roof terrace at fifth floor level and new roof plant including extension to existing plant room and installation of PV panels. (Linked to 25/03510/LBC)

Submitted: 28 May 2025
Council: City of Westminster

ReceivedSubmitted28 May
ValidatedValidated
Consult.Consultation
TargetTarget Date
DecidedDecided29 Jul

Decided in 427 days (council typically 49)

About this application

This is a planning application for an extension at 14, St James's Square, SW1Y 4LG. Westminster has handled 666 applications of this type. This one was decided in 427 days, 54 weeks longer 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 284 applications across SJW_22. We hold 969 applications in total for the SW1Y postcode area.

89% of full planning & listed building consent 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 4LG
Application type: Full planning & listed building consent

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: London LibraryOn this site · +3 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.

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.

Associated applications

2025
28 May
Installation of a new lift shaft within existing lightwell providing access to all levels, creation of a…
This applicationApprovedListed building consent25/03509/FULL
2025
28 May
Installation of a new lift shaft within the existing lightwell providing access to all levels, creation of a…
ApprovedListed building consentPart of25/03510/LBC

Planning history at this site

5 other applications at this property, newest first.

Source: Westminster

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

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