43 Dawes Avenue, Isleworth, TW7 7JS

This site has had 5 applications since 2026: 3 approved, 0 refused.

• P/2026/1983 Withdrawn

  43 Dawes Avenue, Isleworth, TW7 7JS

  GS853573342 - Erection of a hip to gable and rear roof extension with minor ridge increase to the house

  Submitted 3 Jul 2026 Householder
• P/2026/1545 Granted

  43 Dawes Avenue, Isleworth, TW7 7JS

  Erection of a single storey rear extension.

  Decided 30 Jun 2026 Householder
• P/2026/0649 Granted

  43 Dawes Avenue, Isleworth, TW7 7JS

  Erection of single storey rear extension to the house

  Decided 29 Apr 2026 Householder
• PA/2026/0348 Granted

  43 Dawes Avenue, Isleworth, TW7 7JS

  Ground floor rear extension 4.80 metres deep, maximum height of 2.80 metres, 2.67 metres high to the eaves

  Decided 27 Feb 2026 Prior approval

1. 12 Aug 2026

   Received by Hounslow

2. 16 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 7 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Hounslow took a median of 55 days over the applications it decided in the last year.

This application is with Hounslow for determination, against a statutory target of eight weeks. Over the last year Hounslow decided lawful development applications in a median of 55 days. More in our guide to how long planning decisions take.

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.

• 43 Dawes Avenue, Isleworth, TW7 7JS

  P/2026/1983 Submitted 3 Jul 2026 0m away

  GS853573342 - Erection of a hip to gable and rear roof extension with minor ridge increase to the house

  Withdrawn Householder Extension Loft or dormer 7 docs
  Domestic

• 43 Dawes Avenue, Isleworth, TW7 7JS

  PA/2026/0348 Submitted 4 Feb 2026 0m away

  Ground floor rear extension 4.80 metres deep, maximum height of 2.80 metres, 2.67 metres high to the eaves

  Granted Prior approval Extension 8 docs

• 43 Dawes Avenue, Isleworth, TW7 7JS

  P/2026/1545 Submitted 22 May 2026 0m away

  Erection of a single storey rear extension.

  Granted Householder Extension 10 docs
  Small domestic

• 43 Dawes Avenue, Isleworth, TW7 7JS

  P/2026/0649 Submitted 24 Feb 2026 0m away

  Erection of single storey rear extension to the house

  Granted Householder Extension 15 docs
  Small domestic

• 41 DAWES AVENUE, ISLEWORTH, TW7 7JS

  P/2021/2533 Submitted 21 Jun 2021 9m away

  Erection of a single storey rear extension and a front porch.

  Granted Householder Extension 10 docs
  Small domestic

• 40 WOODSTOCK AVENUE, ISLEWORTH, TW7 7JE

  P/2023/0324 Submitted 1 Feb 2023 74m away

  Erection of a single storey rear extension with part first floor rear extension and rear roof extension to the house.

  Refused Householder Extension 22 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