26 Grosvenor Street London W1K 4QJ

26/00482/FULLApproved

Approved on 19 May 2026

Council decision: Application Permitted

Site boundary (council red line)

Proposal

Installation of plant machinery, a new louvred plant enclosure and associated works at the rear 1st floor terrace.

Received: 27 January 2026
Council: City of Westminster

ReceivedReceived27 Jan
ValidatedValidated25 Mar
Consult.Consultation
TargetTarget Date
DecidedDecided19 May

Decided in 55 days

About this application

This is a planning application at 26 Grosvenor Street London W1K 4QJ. Westminster has handled 27,078 applications of this type. This one was decided in 55 days, 6 days longer than Westminster's typical decision time. The site is in the Mayfair conservation area, with 13 listed buildings nearby. There have been 4 other applications at this address. We hold 884 applications in total for the W1K postcode area.

Application details

Postcode: W1K 4QJ

Planning application dates

Date validated: 25 March 2026

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Conservation area: Mayfair
Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
Brownfield land register: Claridge House 32 Davies Street London W1K 4NDRegister site at or near this address
Flood zone 1: Low probability (rivers and sea)

Also checked, none recorded (21)

flood storage areas, listed buildings, 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 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.

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

8 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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