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851-853 Great West Road Isleworth TW7 5PD

PA/2026/1220Prior Approval Larger Home ExtensionRefused
Outline / PiP

Refused on 28 May 2026

Approximate location: the centre of the postcode, not the exact property.

Proposal

Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 3.00 metres high to the eaves.

Received
20 April 2026
Ward
Osterley & Spring Grove
  1. Received20 Apr
  2. Validated22 Apr
  3. Consult.13 May
  4. Target
  5. Decided28 May

Decided in 36 days (council typically 56)

About this application

This is an outline application for a rear extension at 851-853 Great West Road Isleworth TW7 5PD. Hounslow has handled 1,060 applications of this type. This one was decided in 38 days, 3 weeks quicker than Hounslow's typical decision time. The site is in 1 listed building nearby. There are no previous applications recorded at this address. In the past year there have been 215 applications across Osterley & Spring Grove. We hold 894 applications in total for the TW7 postcode area.

82% of outline 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
TW7 5PD
Application type
Prior Approval Larger Home Extension
Scale / size
Small

Planning application dates

Date validated
22 April 2026
Consultation expiry
13 May 2026
Consultation start
22 April 2026
Consultation end
13 May 2026
Application expires
3 June 2026

Planning decision

Statutory period
42 days

Additional information

Documents
3

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations at the address point. Ones next to the site may also apply.

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (21)

flood storage areas, conservation areas, 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: Hounslow

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

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