26, 27, Conduit Street, London, W1S 2XY

25/06184/FULLFull planning permissionPermitted

Full

Proposal

Reinstatement of 4No. original 5th floor window openings to Conduit Street

Received: 11 September 2025
Decided: 28 October 2025
Council: City of Westminster

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.

ReceivedSubmitted11 Sep
ValidatedValidated
Consult.Consultation
TargetTarget Date
DecidedDecided28 Oct

Decided in 47 days (council typically 49)

7 weeks typical decision time in Westminster84% of full planning permission applications approved

This is a planning application for window replacement at 26, 27, Conduit Street, London, W1S 2XY. Westminster has handled 754 applications of this type and approves 84% of them, typically deciding them in 55 days. This one was decided in 47 days, 8 days quicker than Westminster's median. 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 369 applications across WEW_22. We hold 773 applications in total for the W1S postcode area.

Application Details

Reference

25/06184/FULL

Address

26, 27, Conduit Street, London, W1S 2XY

Postcode

W1S 2XY

Local Authority

Westminster

Application Type

Full planning permission

Decision Status

Permitted

Applicant & Agent

Planning Application Dates

Date Decided

28 October 2025

Date Submitted

11 September 2025

Planning Decision

Publicity

Appeal

Additional Information

Coordinates

51.511635, -0.143029

Enriching application data

2/3

Council recordsAppealsFlood risk

Source: Westminster

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

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Planning history at this site

3 other applications at this property, newest first.

Planning constraints

Designations that overlap or adjoin the site outline.

Conservation area: Mayfair
Listed building: Grade II: 3 St George StreetOn or next to this site · +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.

© 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 2026-10-09. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

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