24 Thornbury Avenue, Isleworth, TW7 4NQ

This site has had 3 applications since 2021: 1 approved, 2 refused.

• P/2021/3441 Refused

  24 THORNBURY AVENUE, ISLEWORTH, TW7 4NQ

  Non material amendment for one additional window to the side elevation on the ground floor level following planning permission 01118/24/P1 dated 30/11/202 for erection of single storey rear extension and side and rear roof dormer extensions with one front roof window to the house and alteration to fenestration

  Decided 21 Sep 2021 Amendments
• P/2021/2046 Granted

  24 THORNBURY AVENUE, ISLEWORTH, TW7 4NQ

  Variation of Condition 2 (approved plans) and Condition 3 (no additional windows and doors) to improve the appearance and utility of the extension of planning application 01118/24/P1 approved under appeal dated 30/11/2020 for erection of single storey rear extension and side and rear roof dormer extensions with one front roof window to the house and alteration to fenestration.

  Decided 19 Jul 2021 Householder

1. 20 Oct 2025

   Received by Hounslow

2. 6 Jan 2026

   Validated

   Checked as complete and ready for consideration.

3. 17 Apr 2026

   Decision issued: REFUSED

4. 12 Aug 2026

   Added to PlanIndex

Hounslow refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 24 THORNBURY AVENUE, ISLEWORTH, TW7 4NQ

  P/2021/2046 Submitted 24 May 2021 50 yards away

  Variation of Condition 2 (approved plans) and Condition 3 (no additional windows and doors) to improve the appearance and utility of the extension of planning application 01118/24/P1 approved under appeal dated 30/11/2020 for erection of single storey rear extension and side and rear roof dormer extensions with one front roof window to the house and alteration to fenestration.

  Granted Householder Extension Loft or dormer +1 5 docs
  Small domestic

• 24 THORNBURY AVENUE, ISLEWORTH, TW7 4NQ

  P/2021/3441 Submitted 24 Aug 2021 50 yards away

  Non material amendment for one additional window to the side elevation on the ground floor level following planning permission 01118/24/P1 dated 30/11/202 for erection of single storey rear extension and side and rear roof dormer extensions with one front roof window to the house and alteration to fenestration

  Refused Amendments Extension Loft or dormer +1 3 docs
  Small domestic

• 28 Thornbury Avenue, Isleworth, TW7 4NQ

  P/2024/1877 Submitted 6 Jun 2024 50 yards away

  Erection of a single storey rear infill replacing the existing conservatory, part single storey rear extension, side and rear roof extension and detached outbuilding at the rear of the garden

  Granted Full applications Extension 26 docs
  Small domestic

• 30 Thornbury Avenue, Isleworth, TW7 4NQ

  P/2026/1623 Submitted 1 Jun 2026 50 yards away

  Works to tree in a Conservation Area. T1. Apple. Fell to ground level and grind out stump. Rear garden (east boundary)

  Granted Trees 4 docs

• 30 THORNBURY AVENUE, ISLEWORTH, TW7 4NQ

  P/2021/2257 Submitted 7 Jun 2021 50 yards away

  T1-T4. Ash - Fell to ground level and poison stump with Eco-plugs to prevent re-growth

  Granted Trees 6 docs

• 23 Thornbury Avenue, Isleworth, TW7 4NF

  P/2025/3117 Submitted 15 Oct 2025 50 yards away

  Retrospective permission for the existing rear canopy.

  Granted Householder 7 docs
  Domestic

• P/2026/1916 Granted

  Police Station, 34 Hanworth Road, Feltham, TW13 5BD

  Replacement of existing vehicular and pedestrian gate with associated new control pedestals, new fencing and posts.

  Received 29 Jun, published by the council 26 Jul 2026 Full applications
• P/2026/2212 Granted

  190 Jersey Road, Isleworth, TW7 4QN

  Change of use of the existing House in Multiple Occupation (Use Class C4) occupied by up to six persons to a large House in Multiple Occupation (Sui Generis) occupied by up to eight persons, with no internal changes.

  Received 29 Jul, published by the council 5 Aug 2026 Full applications
• P/2026/1676 Granted

  Clayponds Open Space, Clayponds Gardens, London, W5 4RQ

  Replacement of ball court (MUGA) to a football foundation play zone, installation of new fencing, lighting and associated equipment

  Received 4 Jun, published by the council 26 Jul 2026 Full applications
• P/2026/2806 Awaiting decision

  COST CHOICE, UNIT 5, HIGH STREET, BRENTFORD,TW8 8LB

  Installation of ATM machine to the shopfront..

  Received 30 Sep, published by the council 6 Oct 2026 Full applications
• P/2026/1648 Refused

  Heathrow House, 785 Bath Road, Hounslow, TW5 9AT

  Change of use from 20 residential apartments (14 x one-bedroom and 6 x two-bedroom) to serviced accommodation across three floors 2,3 and 4 of the building.

  Received 3 Jun, published by the council 26 Jul 2026 Full applications