39 Balfern Grove, Chiswick, London, W4 2JX

1. 12 Jan 2026

   Received by Hounslow

2. 14 Jan 2026

   Validated

   Checked as complete and ready for consideration.

3. 10 Mar 2026

   Decision issued: GRANT

4. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 10 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.

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

  P/2026/0206 Submitted 22 Jan 2026 9m away

  Erection of a single storey side infill extension and two new front roof windows to the house.

  Granted Householder Extension Windows or glazing 10 docs
  Small domestic

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

  P/2019/3915 Submitted 29 Oct 2019 16m away

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

  Refused Lawful development Extension 8 docs

• 45 CORNWALL GROVE, CHISWICK, LONDON, W4 2LB

  P/2021/2408 Submitted 15 Jun 2021 31m away

  Erection of a single storey rear infill extension and replacement of rear windows.

  Granted Householder Extension Windows or glazing 15 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

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

  P/2026/0330 Submitted 3 Feb 2026 52m away

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

  Granted Lawful development Extension 11 docs

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

  P/2026/1408 Submitted 11 May 2026 63m 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

• P/2026/2033 Granted

  3 Benedict Drive, Feltham, TW14 8JH

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

  8 Jul 2026 Lawful development
• P/2026/2027 Granted

  115 Northumberland Crescent, Feltham, TW14 9SP

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

  8 Jul 2026 Lawful development
• P/2026/2009 Granted

  3 Brainton Avenue, Feltham, TW14 0AZ

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

  7 Jul 2026 Lawful development
• P/2026/2014 Granted

  82 Sussex Avenue, Isleworth, TW7 6LB

  Certificate of lawfulness for the proposed erection of a rear roof extension, a porch to the front of the house, and a front roof window.

  7 Jul 2026 Lawful development
• P/2026/2473 Awaiting decision

  16 Somerset Waye, Hounslow, TW5 9HG

  Certificate of lawfulness for the proposed erection of a rear roof extension with two roof windows to the front and alterations to the existing side roof from flat roof to pitched roof.

  1 Sep 2026 Lawful development