401 GREAT WEST ROAD, HOUNSLOW, TW5 0BY

1. 22 Feb 2021

   Received by Hounslow

2. 28 Jun 2021

   Decision issued: GRANTED (FULL PLANNING PERMISSION NOT REQUIRED)

3. 27 Sep 2026

   Added to PlanIndex

Hounslow granted permission on 28 June 2021, 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.

• 41 LAMPTON AVENUE, HOUNSLOW, TW3 4EW

  PA/2021/3402 Submitted 19 Aug 2021 100 yards away

  Ground floor rear extension 6 metres deep, maximum height of 3 metres, 2.90 metres high to the eaves

  Refused Prior approval Extension 9 docs

• 39 Lampton Avenue, Hounslow, TW3 4EW

  P/2026/1447 Submitted 8 May 2026 100 yards away

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

  Granted Householder Extension 7 docs
  Small domestic

• 39 Lampton Avenue, Hounslow, TW3 4EW

  PA/2025/3643 Submitted 8 Dec 2025 100 yards away

  Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 2.80 metres high to the eaves.

  Granted Prior approval Extension 5 docs

• 39 Lampton Avenue, Hounslow, TW3 4EW

  P/2025/3675 Submitted 5 Dec 2025 100 yards away

  Certificate of lawfulness for a proposed hip to gable conversion and erection of a rear roof extension to the house and the erection of single storey detached outbuilding to be used as a garden store and gym in the rear garden.

  Granted Lawful development Extension Loft or dormer 7 docs
  Small domestic

• LAMPTON SCHOOL LAMPTON AVENUE, HOUNSLOW, TW3 4EP

  P/2022/3412 Submitted 26 Oct 2022 100 yards away

  Erection of a first floor extension to existing teaching block

  Granted Full applications Extension 9 docs

• Lampton School Lampton Avenue, Hounslow, TW3 4EP

  P/2026/0662 Submitted 25 Feb 2026 100 yards away

  Installation of three Air Source Heat Pumps

  Granted Full applications 8 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