13 Arnold Crescent, Isleworth, TW7 7NS

1. 24 Nov 2025

   Received by Hounslow

2. 19 Jan 2026

   Decision issued: GRANT

3. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 19 January 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.

• 11 Arnold Crescent, Isleworth, TW7 7NS

  PA/2025/3346 Submitted 7 Nov 2025 50 yards away

  Ground floor rear extension 4.50 metres deep, maximum height 3.00 metres, 3.00 metres high to the eaves.

  Granted Prior approval Extension 7 docs

• 7-9 ARNOLD CRESCENT, ISLEWORTH, TW7 7NS

  P/2021/1937 Submitted 17 May 2021 50 yards away

  Demolition of existing twin garage and erection of joined outbuilding at rear of both properties. Erection of single storey rear extension and repaving of front garden for No 7

  Granted Householder Extension Demolition 7 docs
  Small domestic

• 22 Arnold Crescent, Isleworth, TW7 7NT

  P/2026/1966 Submitted 2 Jul 2026 50 yards away

  Erection of a two storey side extension and single storey rear extension.

  Granted Householder Extension 13 docs
  Small domestic

• 6 ARNOLD CRESCENT, ISLEWORTH, TW7 7NT

  PA/2021/2662 Submitted 29 Jun 2021 50 yards away

  Ground floor rear extension 6 metres deep, maximum height of 2.95 metres, 2.80 metres high to the eaves

  Granted Prior approval Extension 9 docs

• 26 Arnold Crescent, Isleworth, TW7 7NT

  P/2026/1787 Submitted 16 Jun 2026 50 yards away

  Erection of a single storey rear infill extension and replacement of garage door to window at the front of the house.

  Granted Householder Extension Windows or glazing 6 docs
  Small domestic

• 23 ARNOLD CRESCENT, ISLEWORTH, TW7 7NS

  P/2023/0066 Submitted 3 Jan 2023 50 yards away

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

  Granted Lawful development Extension Loft or dormer +1 10 docs

• P/2026/2813 Awaiting decision

  150 Wood Lane, Isleworth, TW7 5EQ

  (GSGS877009741) Certificate of lawfulness proposed for the erection of a single storey outbuilding to be used as a home gym / playroom / shed in the rear garden of the house

  Received 5 Oct, published by the council 9 Oct 2026 Lawful development
• P/2026/2334 Granted

  69 Central Avenue, Hounslow, TW3 2QW

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

  Received 12 Aug, published by the council 16 Aug 2026 Lawful development
• P/2026/2459 Granted

  2 Letchworth Avenue, Feltham, TW14 9RY

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

  Received 28 Aug, published by the council 5 Sep 2026 Lawful development
• P/2026/2787 Awaiting decision

  13 Denbigh Road, Hounslow, TW3 4DU

  Certificate of Lawfulness for the proposed erection of a detached outbuilding in the rear garden.

  Received 1 Oct, published by the council 9 Oct 2026 Lawful development
• P/2026/2790 Awaiting decision

  14 Old Farm Close, Hounslow, TW4 7AB

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

  Received 1 Oct, published by the council 6 Oct 2026 Lawful development