3 Eccleston Street London SW1W 9LZ

26/05172/NMAAmendmentApproved

Discharge / amendments

Approved on 17 August 2026

Council decision: Application Permitted

Site boundary (council red line)

Proposal

Amendments to planning permission dated 21 May 2025 (RN: 24/08110/FULL) for the: Refurbishment of building, replacement of all windows at first, second and third floor level, replacement of two doors at ground floor level, removal of two existing windows on eastern elevation, new artwork on eastern elevation, installation of a plant enclosure and replacement of existing roof-top plant equipment and associated works. Namely, to increase the height of the approved ductwork and introduce a short section of stacked ductwork.

Received: 31 July 2026
Council: City of Westminster

ReceivedReceived31 Jul
ValidatedValidated31 Jul
Consult.Consultation
TargetTarget Date
DecidedDecided17 Aug

Decided in 17 days (council typically 49)

About this application

This is an application to amend a permission at 3 Eccleston Street London SW1W 9LZ. Westminster has handled 604 applications of this type. This one was decided in 17 days, 5 weeks quicker than Westminster's typical decision time. The site is in the Belgravia conservation area, with 4 listed buildings nearby. There have been 4 other applications at this address. In the past year there have been 383 applications across Knightsbridge & Belgravia. We hold 1,477 applications in total for the SW1W postcode area.

88% of amendment 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: SW1W 9LZ
Application type: Amendment
Scale / size: Small

Planning application dates

Date validated: 31 July 2026

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Conservation area: Belgravia
Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
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.

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.

Associated applications

2026
31 Jul
Amendments to planning permission dated 21 May 2025 (RN: 24/08110/FULL
This applicationApprovedNon-material amendment26/05172/NMA
2026
31 Jul
Variation of condition 1 of planning permission dated 24 June 2025 (RN: 24/09005/FULL
ApprovedVariation of conditions (s73)Filed alongside26/05173/FULL

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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