4 Chestnut Grove, Isleworth, TW7 7EZ

1. 26 May 2026

   Received by Hounslow

2. 17 Jul 2026

   Decision issued: APPROVED

3. 26 Jul 2026

   Added to PlanIndex

Hounslow granted permission on 17 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.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 11 Chestnut Grove, Isleworth, TW7 7HA

  P/2026/0236 Submitted 26 Jan 2026 42m away

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

  Granted Lawful development Extension Loft or dormer +1 7 docs

• 18 CHESTNUT GROVE, ISLEWORTH, TW7 7EZ

  PA/2023/0325 Submitted 1 Feb 2023 59m away

  Ground floor rear extension 6.00 metres deep, maximum height 4.00 metres, 3.00 metres high to the eaves

  Granted Prior approval Extension 5 docs

• 20 Chestnut Grove, Isleworth, TW7 7EZ

  P/2026/0319 Submitted 3 Feb 2026 63m away

  Certificate of lawfulness for the proposed 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 9 docs

• 395 Twickenham Road, Isleworth, TW7 7ES

  P/2025/2909 Submitted 29 Sep 2025 81m away

  66% historically approved · decision due ~7 Jan

  Demolition of existing building and erection of two storey residential building comprising of seven self contained flats with associated car parking, landscaping, refuse and recycling.

  Awaiting decision Full applications New dwelling Demolition 25 docs

• 33 Chestnut Grove, Isleworth, TW7 7HA

  PA/2026/1038 Submitted 30 Mar 2026 86m away

  Ground floor rear extension 5.00 metres deep, maximum height of 3.00 metres, 3.00 metres high to the eaves

  Granted Prior approval Extension 5 docs

• 401 Twickenham Road, Isleworth, TW7 7ES

  P/2026/1461 Submitted 14 May 2026 86m away

  Installation of solar panels to the roof of the outbuilding and to the rear roof elevation of the main house.

  Granted Householder 12 docs
  Small domestic

• P/2026/2623 Awaiting decision

  8 Lonsdale Road,Chiswick,W4 1ND

  Installation of external condenser at first floor level.

  Received 15 Sep, published by the council 17 Sep 2026 Householder
• P/2026/2125 Granted

  36 Midsummer Avenue, Hounslow, TW4 5BB

  Erection of a single storey rear extension and a single storey side extension following the demolition of the existing side garage.

  Received 21 Jul, published by the council 30 Jul 2026 Householder
• P/2026/2615 Awaiting decision

  48 Meadow Waye, Hounslow, TW5 9EZ

  Erection of a part first floor rear extension.

  Received 14 Sep, published by the council 17 Sep 2026 Householder
• P/2026/2619 Awaiting decision

  12 Letchworth Avenue, Feltham, TW14 9RY

  Erection of a single storey rear extension.

  Received 14 Sep, published by the council 17 Sep 2026 Householder
• P/2026/2600 Awaiting decision

  310 Lionel Road North, Brentford, TW8 9QX

  Erection of a rear roof extension.

  Received 14 Sep, published by the council 17 Sep 2026 Householder