15A, Windmill Road, Brentford, TW8 0QD

P/2026/1421Full planning permissionApproved

Full

Approved on 3 July 2026

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.

Proposal

Conversion of three self-contained flats into one house and erect a single storey wrap-around rear extension at lower ground floor level. Replacement of all windows to sash windows and one rear window to juliet balcony. Relocating the main entrance from the side to the front elevation with a canopy, the erection of a single storey side extension and to install two air source heat pumps in the rear garden.

Submitted: 11 May 2026
Council: London Borough of Hounslow

ReceivedSubmitted11 May
ValidatedValidated
Consult.Consultation
TargetTarget Date
DecidedDecided3 Jul

Decided in 53 days (council typically 56)

About this application

This is a planning application for a single storey side extension at 15A, Windmill Road, Brentford, TW8 0QD. Hounslow has handled 412 applications of this type. This one was decided in 53 days, 3 days quicker than Hounslow's typical decision time. The site is in the St Paul's Brentford conservation area. There are no previous applications recorded at this address. In the past year there have been 74 applications across Brentford West. We hold 455 applications in total for the TW8 postcode area.

60% of full planning permission applications at London Borough of Hounslow were approved. Across all application types, the council typically decides in about 8 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: TW8 0QD
Application type: Full planning permission

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Conservation area: St Paul's Brentford
Article 4 direction: Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction
Flood zone 1: Low probability (rivers and sea)

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (21)

flood storage areas, listed buildings, 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.

Planning history at this site

5 other applications at this property, newest first.

Source: Hounslow

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

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