9 Devon Waye, Hounslow, TW5 0NE

1. 21 Aug 2025

   Received by Hounslow

2. 15 Oct 2025

   Decision issued: GRANT

3. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 15 October 2025, 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 Devon Waye, Hounslow, TW5 0NE

  P/2024/3488 Submitted 19 Oct 2024 50 yards away

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

  Granted Lawful development Extension Loft or dormer +1 15 docs

• 25 Devon Waye, Hounslow, TW5 0NE

  PA/2024/3251 Submitted 30 Sep 2024 50 yards away

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

  Granted Prior approval Extension 12 docs

• 79 The Warren, Hounslow, TW5 0JW

  P/2024/3610 Submitted 30 Oct 2024 100 yards away

  Certificate of lawfulness for the proposed erection of a single storey detached outbuilding for use as a gym in the rear garden.

  Granted Lawful development 5 docs
  Small domestic

• 78 WESTBROOK ROAD, HOUNSLOW, TW5 0NG

  P/2021/2322 Submitted 9 Jun 2021 100 yards away

  Certificate of Lawfulness for the proposed erection of a single storey outbuilding in the rear end of the garden to the house

  Granted Lawful development 9 docs
  Small domestic

• 90 The Warren, Hounslow, TW5 0JN

  P/2024/2930 Submitted 3 Sep 2024 100 yards away

  Certificate of Lawfulness for the proposed erection of a rear roof extension with hip to gable conversion.

  Granted Lawful development Extension Loft or dormer 9 docs

• 80 THE WARREN, HOUNSLOW, TW5 0JN

  PA/2021/2415 Submitted 15 Jun 2021 100 yards away

  Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.90 metres high to the eaves

  Granted Prior approval Extension 5 docs

• 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