140A Cygnet Avenue, Feltham, TW14 0DT

1. 7 Oct 2025

   Received by Hounslow

2. 10 Oct 2025

   Validated

   Checked as complete and ready for consideration.

3. 5 Dec 2025

   Decision issued: GRANT

4. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 5 December 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.

• 85 CYGNET AVENUE, FELTHAM, TW14 0DU

  PA/2019/4073 Submitted 11 Nov 2019 100 yards away

  Ground floor rear extension 3.5 metres deep, maximum height of 3 metres, 2.75 metres high to the eaves

  Withdrawn Prior approval Extension 2 docs

• 85 CYGNET AVENUE, FELTHAM, TW14 0DU

  PA/2019/4070 Submitted 11 Nov 2019 100 yards away

  Ground floor rear extension 3.8 metres deep, maximum height of 3.0 metres, 2.75 metres high to the eaves

  Granted Prior approval Extension 4 docs

• 124 CYGNET AVENUE, FELTHAM, TW14 0DT

  P/2021/2490 Submitted 18 Jun 2021 100 yards away

  Certificate of Lawfulness for the proposed erection of a rear roof extension incorporating hip to gable conversion and two front roof windows to the house

  Granted Lawful development Extension Loft or dormer +1 4 docs

• 124 CYGNET AVENUE, FELTHAM, TW14 0DT

  PA/2021/2527 Submitted 18 Jun 2021 100 yards away

  Ground floor rear extension 4.60 metres deep, maximum height of 3.00 metres, 2.80 metres high to the eaves

  Granted Prior approval Extension 4 docs

• 124 CYGNET AVENUE, FELTHAM, TW14 0DT

  P/2021/2948 Submitted 20 Jul 2021 100 yards away

  Erection of a single storey rear extension and part rear first floor extension.

  Granted Householder Extension 5 docs
  Small domestic

• 71 Cygnet Avenue, Feltham, TW14 0DU

  P/2025/1268 Submitted 22 Apr 2025 150 yards away

  Erection of single storey detached self contained residential unit in the rear garden.

  Withdrawn Householder 4 docs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