Skip to content

12A Eccleston Street London SW1W 9LT

25/07412/FULLFull Planning Permission ApplicationApproved
Full

Approved on 27 February 2026

Site boundary (council red line)

Proposal

Installation of two wall mounted condenser units between rear lower ground and ground floor levels.

Received
14 October 2025
Ward
Knightsbridge & Belgravia
Agent
Murray Birrell Ltd
  1. Received14 Oct
  2. Validated16 Oct
  3. Consult.
  4. Target11 Dec
  5. Decided27 Feb

Decided in 134 days (council typically 49)

About this application

This is a full planning application at 12A Eccleston Street London SW1W 9LT. Westminster has handled 4,484 applications of this type. This one was decided in 136 days, 12 weeks longer than Westminster's typical decision time. The site is in the Belgravia conservation area, with 5 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 383 applications across Knightsbridge & Belgravia. We hold 1,476 applications in total for the SW1W 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
SW1W 9LT
Application type
Full Planning Permission Application
Scale / size
Small

Planning application dates

Date validated
16 October 2025
Consultation expiry
19 November 2025
Target decision date
11 December 2025

Applicant and agent

Agent
Murray Birrell Ltd
Agent address
Mortimer House 40 Chatsworth Parade Queensway Petts Wood BR5 1DE

Planning decision

Statutory period
56 days

Publicity

Last advertised
29 October 2025
Advertisement expiry
19 November 2025

Additional information

Planning Portal ID
PP-14175408
Comments
0
Documents
9

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 2: Medium probability (rivers and sea)Part of the site
  • Conservation area: Belgravia
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed
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.

Track this application

Get email alerts when there is a planning decision or status change.

Get email alerts near SW1W

New planning applications delivered to your inbox daily.

Around this site

Discuss this application on r/PlanningPermissionUK

For applicants and trades

What's been approved on your street?

See what the council approved and refused near this address for the project you have in mind, and the rules that apply here.

Get The Signal Report