19 Ashbourne Grove,Chiswick,W4 2JH

1. 25 Jun 2026

   Received by Hounslow

2. 26 Jul 2026

   Added to PlanIndex

3. 14 Aug 2026

   Decision issued: GRANT

4. 16 Aug 2026

   Status changed to REGISTERED: Pending recommendation

   Previously REGISTERED: Under Assessment.

Hounslow granted permission on 14 August 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.

• 19 Ashbourne Grove, Chiswick, London, W4 2JH

  P/2026/1408 Submitted 11 May 2026 0m away

  Erection of a rear roof and outrigger extension with three front roof windows to the house.

  Refused Householder Extension Windows or glazing 7 docs
  Domestic

• 19 Ashbourne Grove, Chiswick, London, W4 2JH

  P/2026/1386 Submitted 7 May 2026 0m away

  Erection of a single-storey rear and infill extension.

  Granted Householder Extension 7 docs
  Small domestic

• 44 Balfern Grove, Chiswick, London, W4 2JX

  PA/2026/1274 Submitted 27 Apr 2026 33m away

  Ground floor rear extension 1 metre deep, maximum height 2.8 metres. Single Storey side extension 6 metres deep, maximum height 3.1 metres, 2.67 metres high to the eaves.

  Granted Prior approval Extension 15 docs
  Small domestic

• 31 WILTON AVENUE, CHISWICK, LONDON, W4 2HX

  P/2021/2103 Submitted 27 May 2021 49m away

  Retrospective application for the installation of glass railing around the first floor terrace to the house

  Granted Householder 7 docs
  Domestic

• 24 Balfern Grove, Chiswick, London, W4 2JX

  P/2026/0330 Submitted 3 Feb 2026 53m away

  Certificate of lawfulness for the proposed outrigger roof extension to the house

  Granted Lawful development Extension 11 docs

• 39 Balfern Grove, Chiswick, London, W4 2JX

  P/2026/0083 Submitted 12 Jan 2026 63m away

  Certificate of lawfulness proposed erection of a rear roof and outrigger extension, including a Juliet balcony and three front roof windows to the house.

  Granted Lawful development Extension Windows or glazing 7 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