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21 Lees Place London W1K 6LR

25/06937/FULLFull Planning Permission ApplicationApproved
Full

Approved on 7 April 2026

Site boundary (council red line)

Proposal

Partial demolition; basement excavation; replacement ground floor frontage; creation of a rear lightwell; installation of a new window on the west elevation; and associated external works in connection with residential use (Class C3) of part of the ground floor and new basement floor. (Land use swap with 20 Upper Grosvenor Street (REF: 25/06740/FULL))

Received
26 September 2025
Ward
West End
  1. Received26 Sep
  2. Validated26 Sep
  3. Consult.
  4. Target21 Nov
  5. Decided7 Apr

Decided in 193 days (council typically 49)

About this application

This is a full planning application for demolition at 21 Lees Place London W1K 6LR. Westminster has handled 4,484 applications of this type. This one was decided in 193 days, 21 weeks longer than Westminster's typical decision time. The site is in the Mayfair conservation area, with 6 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 484 applications across West End. We hold 884 applications in total for the W1K postcode area.

86% of full 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.See what's approved near your address

Application details

Postcode
W1K 6LR
Application type
Full Planning Permission Application
Scale / size
Small

Planning application dates

Date validated
26 September 2025
Consultation expiry
5 November 2025
Target decision date
21 November 2025

Applicant and agent

Agent
Newmark
Agent address
One?Fitzroy, 6?Mortimer?Street London W1T 3JJ United Kingdom

Planning decision

Statutory period
56 days

Publicity

Last advertised
15 October 2025
Advertisement expiry
5 November 2025
Site notice start
2 October 2025
Site notice end
23 October 2025

Additional information

Planning Portal ID
PP-14354576
Comments
0
Documents
47

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
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)

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, 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.

Source: Westminster

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

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