4 Dawes Avenue, Isleworth, TW7 7JT

This site has had 3 applications since 2025: 1 approved, 2 refused.

• P/2026/2374 Refused

  4 Dawes Avenue, Isleworth, TW7 7JT

  Non material amendment to change the flat roof to a pitched roof of planning permission P/2026/1102 approved 29/07/2026 for the erection of a single storey rear extension to the house.

  Decided 10 Sep 2026 Amendments
• P/2026/1102 Granted

  4 Dawes Avenue, Isleworth, TW7 7JT

  Erection of a single storey rear extension to the house.

  Decided 29 Jul 2026 Householder

1. 2 Dec 2025

   Received by Hounslow

2. 6 Jan 2026

   Decision issued: PRIOR APPROVAL DOES NOT COMPLY

3. 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.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 4 Dawes Avenue, Isleworth, TW7 7JT

  P/2026/2374 Submitted 17 Aug 2026 50 yards away

  Non material amendment to change the flat roof to a pitched roof of planning permission P/2026/1102 approved 29/07/2026 for the erection of a single storey rear extension to the house.

  Refused Amendments Extension 10 docs
  Small domestic

• 4 Dawes Avenue, Isleworth, TW7 7JT

  P/2026/1102 Submitted 7 Apr 2026 50 yards away

  Erection of a single storey rear extension to the house.

  Granted Householder Extension 46 docs
  Small domestic

• 2 Dawes Avenue, Isleworth, TW7 7JT

  P/2024/3415 Submitted 21 May 2024 50 yards away

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

  Granted Lawful development Extension Loft or dormer +1

• 7 DAWES AVENUE, ISLEWORTH, TW7 7JU

  P/2021/2898 Submitted 15 Jul 2021 50 yards away

  Erection of a single storey rear extension with two roof lanterns to the house

  Granted Householder Extension 6 docs
  Small domestic

• 7 DAWES AVENUE, ISLEWORTH, TW7 7JU

  P/2021/2897 Submitted 15 Jul 2021 50 yards away

  Erection of a single storey outbuilding with storage area and communal space.

  Granted Householder 6 docs
  Small domestic

• 7 DAWES AVENUE, ISLEWORTH, TW7 7JU

  P/2021/2747 Submitted 6 Jul 2021 50 yards away

  Certificate of Lawfulness for the erection of a rear roof extension incorporating hip to gable conversion, with four front roof windows to the house

  Granted Lawful development Extension Loft or dormer +1 5 docs

• PA/2026/2437 Refused

  17 Orchard Road, Brentford, TW8 0QX

  Ground floor rear extension 5.51 metres deep, maximum height of 2.80 metres, 2.06 metres high to the eaves

  Received 26 Aug, published by the council 2 Sep 2026 Prior approval
• PA/2026/2481 Refused

  6 Speart Lane, Hounslow, TW5 9EF

  Ground floor rear extension 8.00 metres deep, maximum height of 3.00 metres, 2.80 metres high to the eaves

  Received 1 Sep, published by the council 5 Sep 2026 Prior approval
• PA/2026/2768 Awaiting decision

  86 Kneller Gardens, Isleworth, TW7 7NW

  Ground floor rear extension 4.50 metres, maximum height 3.20 metres, 2.70 metres high to the eaves.

  Received 30 Sep, published by the council 6 Oct 2026 Prior approval
• PA/2026/2393 Granted

  2 Letchworth Avenue, Feltham, TW14 9RY

  Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.85 metres high to the eaves

  Received 18 Aug, published by the council 23 Aug 2026 Prior approval
• PA/2026/2364 Granted

  9 Westbourne Road, Feltham, TW13 4LX

  Ground floor rear extension 4.5 metres deep, maximum height of 2.8 metres, 2.8 metres high to the eaves

  Received 13 Aug, published by the council 23 Aug 2026 Prior approval