1, 4, Eaton Mews West, SW1W 9ET

25/03490/NMANon-Material AmendmentPermitted

Proposal

Amendments to planning permission dated 31 October 2024 (RN 24/00412/FULL) for: 'Redevelopment of 1-4 Eaton Mews West including demolition behind a part retained facade and replacement building comprising ground and first floor with a new part mansard roof level, to provide six residential (Class C3) units, and provision of office (Class E(g)(i)) accommodation. Creation of rear gardens at ground floor level, installation of plant, and other associated works.' NAMELY, to allow the exclusion of a portion of the 'wing' adjoining 93 Elizabeth Street from the development and a reduction in office floorspace; increase in overall GIA due to the reduction in the thickness of the external walls; increased extent of demolition of the part-retained facade; reconfiguration of interiors; alterations to lift overrun; amendements to window and door openings; and, relocation of cycle parking.

Received: 22 May 2025
Decided: 17 September 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.

ReceivedSubmitted22 May
ValidatedValidated
Consult.Consultation
TargetTarget Date
DecidedDecided17 Sep

Decided in 118 days (council typically 49)

7 weeks typical decision time in Westminster87% of non-material amendment applications approved

This is a planning application for demolition at 1, 4, Eaton Mews West, SW1W 9ET. Westminster has handled 218 applications of this type and approves 87% of them, typically deciding them in 29 days. This one was decided in 118 days, 13 weeks longer than Westminster's median. The site is in the Belgravia conservation area, with 14 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 131 applications across KBW_22. We hold 1,432 applications in total for the SW1W postcode area.

Application Details

Reference

25/03490/NMA

Address

1, 4, Eaton Mews West, SW1W 9ET

Postcode

SW1W 9ET

Local Authority

Westminster

Application Type

Non-Material Amendment

Decision Status

Permitted

Applicant & Agent

Planning Application Dates

Date Decided

17 September 2025

Date Submitted

22 May 2025

Planning Decision

Publicity

Appeal

Additional Information

Coordinates

51.494000, -0.152576

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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Associated applications

2025
22 May
Amendments to planning permission dated 31 October 2024 (RN 24/00412/FULL
This applicationApprovedNon-material amendment25/03490/NMA
2025
21 May
Details of a Circular Economy Statement, pursuant to Condition 9 of planning permission dated 31 October 2024…
ApprovedDischarge of conditionsFiled alongside25/03464/ADFULL

Planning history at this site

9 other applications at this property, newest first.

Planning constraints

Designations that overlap or adjoin the site outline.

Conservation area: Belgravia
Listed building: Grade II: 4-22, Chester Row Sw1On or next to this site · +3 more
Article 4 direction: Article 4 Basement Development Permitted Rights Removed
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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