115 Roxborough Avenue, Isleworth, TW7 5HH

This site has had 2 applications since 2026: 1 approved, 0 refused.

• P/2026/2474 Awaiting decision

  115 Roxborough Avenue, Isleworth, TW7 5HH

  Erection of a single storey rear extension, front porch extension, part side extension and first floor side extension to the house.

  Submitted 1 Sep 2026 Householder

1. 6 May 2026

   Received by Hounslow

2. 1 Jul 2026

   Decision issued: GRANT

3. 26 Jul 2026

   Added to PlanIndex

Hounslow granted permission on 1 July 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.

• 115 Roxborough Avenue, Isleworth, TW7 5HH

  P/2026/2474 Submitted 1 Sep 2026 50 yards away

  77% historically approved · decision due ~29 Oct

  Erection of a single storey rear extension, front porch extension, part side extension and first floor side extension to the house.

  Awaiting decision Householder Extension 7 docs
  Small domestic

• 109 ROXBOROUGH AVENUE, ISLEWORTH, TW7 5HH

  P/2021/2808 Submitted 9 Jul 2021 50 yards away

  Erection of a single storey rear infill extension.

  Granted Householder Extension 5 docs
  Small domestic

• 109 Wood Lane, Isleworth, TW7 5EG

  P/2026/2566 Submitted 9 Sep 2026 100 yards away

  100% historically approved · decision due ~6 Nov

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

  Awaiting decision Lawful development Extension Loft or dormer +1 4 docs

• 74 ROXBOROUGH AVENUE, ISLEWORTH, TW7 5HJ

  P/2021/3310 Submitted 16 Aug 2021 100 yards away

  Certificate of Lawfulness for the proposed erection of a rear roof extension incorporating hip to gable conversion, two front roof windows, one second floor side window and conversion of existing garage into habitable room with removal of front shutter and replace with windows to the house.

  Granted Lawful development Extension Loft or dormer +1 5 docs

• 91 Wood Lane, Isleworth, TW7 5EG

  P/2025/2883 Submitted 25 Sep 2025 150 yards away

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

  Granted Lawful development Extension Loft or dormer +1 9 docs

• 60 Harewood Road, Isleworth, TW7 5HL

  P/2026/0128 Submitted 15 Jan 2026 150 yards away

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

  Granted Lawful development Extension Loft or dormer +1 4 docs

• P/2026/2118 Granted

  54 Amhurst Gardens, Isleworth, TW7 6AJ

  Certificate of lawfulness for the proposed erection of a rear roof extension with front roof windows.

  Received 20 Jul, published by the council 26 Jul 2026 Lawful development
• P/2026/2580 Awaiting decision

  50B Paxton Road, Chiswick, London, W4 2QX

  Certificate of lawfulness for the existing use of a first floor self contained flat.

  Received 10 Sep, published by the council 17 Sep 2026 Lawful development
• P/2026/2332 Granted

  43 Dawes Avenue, Isleworth, TW7 7JS

  Certificate of Lawfulness for the proposed hip to gable conversion, front roof lights and erection of a rear roof extension to the house.

  Received 12 Aug, published by the council 16 Aug 2026 Lawful development
• P/2026/2089 Granted

  18 Central Avenue, Hounslow, TW3 2QH

  Certificate of lawfulness for the existing use of the rear extension as a self contained flat.

  Received 17 Jul, published by the council 26 Jul 2026 Lawful development
• P/2026/2566 Awaiting decision

  109 Wood Lane, Isleworth, TW7 5EG

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

  Received 9 Sep, published by the council 17 Sep 2026 Lawful development