24 Balfern Grove, Chiswick, London, W4 2JX

1. 3 Feb 2026

   Received by Hounslow

2. 31 Mar 2026

   Decision issued: GRANT

3. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 31 March 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.

• 25 BALFERN GROVE, CHISWICK, W4 2JX

  P/2023/1024 Submitted 30 Mar 2023 50 yards away

  Certificate of Lawfulness for the proposed development of a rear roof dormer extension and installation of two front roof lights to the house.

  Granted Lawful development Extension Loft or dormer 7 docs

• 25 BALFERN GROVE, CHISWICK, W4 2JX

  PA/2023/1063 Submitted 3 Apr 2023 50 yards away

  Ground floor rear extension 5.6 metres deep, maximum height of 3.05 metres, 3.00 metres high to the eaves.

  Granted Prior approval Extension 5 docs

• FLAT FIRST FLOOR 33 BALFERN GROVE, CHISWICK, W4 2JX

  P/2019/3915 Submitted 29 Oct 2019 50 yards away

  Certificate of Lawfulness for erection of a rear roof extension to outrigger of first floor flat

  Refused Lawful development Extension 8 docs

• 42 BALFERN GROVE, CHISWICK, LONDON, W4 2JX

  P/2021/1668 Submitted 29 Apr 2021 50 yards away

  Certificate of Lawfulness for the erection of a rear outrigger roof extension.

  Granted Lawful development Extension 6 docs

• 42 BALFERN GROVE, CHISWICK, LONDON, W4 2JX

  P/2021/1667 Submitted 29 Apr 2021 50 yards away

  Erection of a single storey rear infill extension to the house.

  Granted Householder Extension 8 docs
  Small domestic

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

  PA/2026/1274 Submitted 27 Apr 2026 50 yards 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

• 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