91 Thornbury Road, Isleworth, TW7 4NL

1. 18 Nov 2025

   Received by Hounslow

2. 27 Nov 2025

   Validated

   Checked as complete and ready for consideration.

3. 10 Feb 2026

   Decision issued: GRANT

4. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 10 February 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 89 Thornbury Road, Isleworth, TW7 4NL

  P/2025/2392 Submitted 4 Aug 2025 11m away

  Formation of vehicular access, front boundary wall and new rear boundary fence to the house.

  Withdrawn Householder 5 docs
  Small domestic

• 89 Thornbury Road, Isleworth, TW7 4NL

  P/2025/3749 Submitted 18 Dec 2025 11m away

  Formation of a vehicular access to the front of the house, erection of a front wall and gate and new rear boundary fence

  Refused Householder 6 docs
  Small domestic

• 101 Thornbury Road, Isleworth, TW7 4NL

  P/2024/3626 Submitted 31 Oct 2024 29m away

  Works to tree within a conservation area: Front Garden -T1 False Acacia (Robinia pseudoacacia) Crown Reduction - Reducing the height and spread of the tree by approximately 1-2m below previous reduction points. Final height 14m and spread 9m.

  Granted Trees 4 docs

• 10, Fairacre Thornbury Road, Isleworth, TW7 4NJ

  P/2025/3358 Submitted 7 Nov 2025 45m away

  Fell dangerous tree (5 day dangerous tree). Fell leaning Elder.

  Granted Trees 2 docs

• Ardmore Church Road, Isleworth, TW7 4PH

  P/2026/0192 Submitted 21 Jan 2026 71m away

  Works to tree in a Conservation Area. T1 Apple (Malus domestica). Rear garden. Reduce crown to previous reduction points removing approximately 3 metres of growth.

  Granted Trees 4 docs

• 51 Marbaix Gardens, Isleworth, TW7 4FD

  P/2025/2625 Submitted 28 Aug 2025 110m away

  Non Material Amendment to allow the reduction in depth and increase in width of the approved extension of planning permission 02300/51/P2 approved 12/12/2022 for the erection of a single storey rear extension to the house

  Granted Amendments Extension 6 docs
  Small domestic

• P/2026/2033 Granted

  3 Benedict Drive, Feltham, TW14 8JH

  Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion with windows to the front and side of the house.

  8 Jul 2026 Lawful development
• P/2026/2027 Granted

  115 Northumberland Crescent, Feltham, TW14 9SP

  Certificate of lawfulness for the proposed erection of a rear roof extension and windows to the front of the house.

  8 Jul 2026 Lawful development
• P/2026/2009 Granted

  3 Brainton Avenue, Feltham, TW14 0AZ

  Certificate of lawfulness for the proposed erection of a rear roof extension and Juliette balcony with front roof windows to the house.

  7 Jul 2026 Lawful development
• P/2026/2014 Granted

  82 Sussex Avenue, Isleworth, TW7 6LB

  Certificate of lawfulness for the proposed erection of a rear roof extension, a porch to the front of the house, and a front roof window.

  7 Jul 2026 Lawful development
• P/2026/2473 Awaiting decision

  16 Somerset Waye, Hounslow, TW5 9HG

  Certificate of lawfulness for the proposed erection of a rear roof extension with two roof windows to the front and alterations to the existing side roof from flat roof to pitched roof.

  1 Sep 2026 Lawful development