17 Dalmeny Crescent, Hounslow, TW3 2NT

1. 24 Feb 2026

   Received by Hounslow

2. 25 Mar 2026

   Decision issued: GRANT

3. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 25 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.

• 83 CHATSWORTH CRESCENT, HOUNSLOW, TW3 2PF

  PA/2023/0959 Submitted 27 Mar 2023 50 yards away

  Ground floor rear extension 6.00 metres deep, maximum height 3.28 metres, 3.00 metres high to the eaves

  Granted Prior approval Extension 6 docs

• 152 Heath Road,Hounslow,TW3 2NS

  P/2026/1746 Submitted 12 Jun 2026 100 yards away

  Retrospective application for the erection of a single-storey detached outbuilding to the rear of the house.

  Granted Householder 5 docs
  Small domestic

• 166 HEATH ROAD, HOUNSLOW, TW3 2NS

  PA/2021/2293 Submitted 8 Jun 2021 100 yards away

  Ground floor rear extension 5.00 metres deep, maximum height 2.97 metres, 2.82 metres high to the eaves

  Granted Prior approval Extension 6 docs

• 166 HEATH ROAD, HOUNSLOW, TW3 2NS

  P/2021/2289 Submitted 8 Jun 2021 100 yards away

  Certificate of Lawfulness for the erection of a front entrance porch and external insulation and render to front elevation of the house

  Refused Lawful development Extension 6 docs
  Small domestic

• 166 HEATH ROAD, HOUNSLOW, TW3 2NS

  P/2021/2213 Submitted 3 Jun 2021 100 yards away

  Erection of a single storey self contained unit in the rear garden of the house

  Withdrawn Householder 5 docs
  Small domestic

• 166 HEATH ROAD, HOUNSLOW, TW3 2NS

  P/2021/2288 Submitted 8 Jun 2021 100 yards away

  Erection of a part single part two storey side extension to the house

  Refused Householder Extension 7 docs
  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