66 Devonshire Road, Chiswick, W4 2HT

1. 17 Mar 2026

   Received by Hounslow

2. 27 Apr 2026

   Decision issued: GRANT

3. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 27 April 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.

• 64 Flat Ground Floor,Devonshire Road,Chiswick,London,W4 2HT

  P/2024/3357 Submitted 7 Oct 2024 50 yards away

  Erection of a single storey side and rear extension to the flat

  Granted Full applications Extension 9 docs
  Small domestic

• 10 Swanscombe Road, Chiswick, W4 2HQ

  P/2026/1560 Submitted 22 May 2026 50 yards away

  Certificate of lawfulness for the proposed erection of a rear roof extension and rear outrigger extension.

  Granted Lawful development Extension 10 docs

• 47 Devonshire Road, Chiswick, London, W4 2HU

  P/2025/3532 Submitted 25 Nov 2025 50 yards away

  Works to trees in a Conservation Area. T1 Greengage (Prunus domestica). Reduce crown by up to 1.5 metres to suitable growth points and thin crown by removing epicormic growth. T2 Olive (Oleo europaea). Reduce crown height by 1.2 metres to suitable growth points. Prune back side growth to match and by up to 0.6 metres.

  Granted Trees 3 docs

• 47 DEVONSHIRE ROAD, CHISWICK, LONDON, W4 2HU

  P/2023/0770 Submitted 9 Mar 2023 50 yards away

  Erection of a single storey rear infill extension and a second floor outrigger extension to the house

  Refused Householder Extension 12 docs
  Small domestic

• 77 Devonshire Road, Chiswick, London, W4 2HU

  P/2024/2662 Submitted 4 Aug 2024 50 yards away

  Certificate of Lawfulness for the proposed erection of a second floor rear outrigger roof extension and installation of a first floor rear outrigger side window to the house.

  Granted Lawful development Extension Windows or glazing 9 docs

• 18 ALKERDEN ROAD, CHISWICK, W4 2HP

  P/2024/1300 Submitted 25 Apr 2024 100 yards away

  Certificate of Lawfulness for the house's existing single storey rear extension.

  Granted Lawful development Extension 9 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