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6 Balfour Place London W1K 2AX

25/07912/P3JPAPrior Approval Class E to Dwellings (MA)Approved
Outline / PiP

Approved on 18 December 2025

Site boundary (council red line)

Proposal

Notification for Prior Approval for the change of use of the lower ground floor and part of the ground floor from Use Class E to provide 1 residential flat Use Class C3 under the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) Schedule 2, Part 3, Class MA.

Received
31 October 2025
Ward
West End
  1. Received31 Oct
  2. Validated31 Oct
  3. Consult.
  4. Target25 Dec
  5. Decided18 Dec

Decided in 48 days (council typically 49)

About this application

This is an outline application for a change of use at 6 Balfour Place London W1K 2AX. Westminster has handled 218 applications of this type. This one was decided in 48 days. The site is in the Mayfair conservation area, with 20 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 484 applications across West End. We hold 886 applications in total for the W1K postcode area.

82% of outline 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
W1K 2AX
Application type
Prior Approval Class E to Dwellings (MA)
Scale / size
Small

Planning application dates

Date validated
31 October 2025
Consultation expiry
3 December 2025
Target decision date
25 December 2025

Applicant and agent

Agent
Savills
Agent address
33 Margaret Street London W1G 0JD

Planning decision

Statutory period
55 days

Publicity

Last advertised
12 November 2025
Advertisement expiry
3 December 2025
Site notice start
4 November 2025
Site notice end
25 November 2025

Additional information

Planning Portal ID
PP-14414830
Comments
0
Documents
26

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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