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51, Thornbury Road, Isleworth, TW7 4LE

P/2025/0901Full planning permissionApproved
Full

Approved on 13 February 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

Erection of one building to provide seven flats with landscaping, cycle parking, waste and recycling facilities following demolition of the existing house and garage.

Submitted
4 June 2025
  1. Received4 Jun
  2. Validated
  3. Consult.
  4. Target
  5. Decided13 Feb

Decided in 254 days (council typically 56)

About this application

This is a planning application for demolition at 51, Thornbury Road, Isleworth, TW7 4LE. Hounslow has handled 412 applications of this type. This one was decided in 254 days, 28 weeks longer than Hounslow's typical decision time. The site is in the Spring Grove conservation area. 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.

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
TW7 4LE
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: Spring Grove
  • 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.

© 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.

Associated applications

  1. 2026
    28 Jul

    Details of Drainage Assessment Form submitted pursuant to conditions 14 of permission P/2025/0901

    RefusedDischarge of conditionsP/2026/2186
  2. 2026
    28 Jul

    Details of Biodiversity Gain Plan and Habitat Management and Monitoring Plan submitted pursuant to conditions…

    RefusedDischarge of conditionsP/2026/2188
  3. 2025
    4 Jun

    Erection of one building to provide seven flats with landscaping, cycle parking, waste and recycling…

    This applicationApprovedFull planning permissionP/2025/0901

Source: Hounslow

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

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