37 St Marys Grove, Chiswick, London, W4 3LN

This site has had 2 applications since 2025: 2 approved, 0 refused.

• P/2025/3054 Granted

  37 St Marys Grove, Chiswick, London, W4 3LN

  Certificate of lawfulness for the proposed erection of two rear roof extensions with Juliet balconies, four front roof windows to the house and removal of chimney.

  Decided 4 Dec 2025 Lawful development

1. 2 Oct 2025

   Received by Hounslow

2. 17 Nov 2025

   Decision issued: GRANT

3. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 17 November 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.

• 37 St Marys Grove, Chiswick, London, W4 3LN

  P/2025/3054 Submitted 10 Oct 2025 50 yards away

  Certificate of lawfulness for the proposed erection of two rear roof extensions with Juliet balconies, four front roof windows to the house and removal of chimney.

  Granted Lawful development Extension Windows or glazing 13 docs

• 63 Whitehall Park Road, Chiswick, London, W4 3NB

  P/2026/0116 Submitted 14 Jan 2026 50 yards away

  Variation of condition 2 (approved plans) to include parapet detail not shown on P/2025/0694 approved 29/04/2025 for the erection of single storey rear and infill extension to house.

  Granted Conditions Extension 8 docs
  Small domestic

• 51A ST MARYS GROVE, CHISWICK, LONDON, W4 3LW

  P/2021/2470 Submitted 18 Jun 2021 50 yards away

  Erection of a single storey outbuilding in the rear garden of the flat.

  Granted Full applications 7 docs
  Small domestic

• 51A ST MARYS GROVE, CHISWICK, LONDON, W4 3LW

  P/2021/2471 Submitted 18 Jun 2021 50 yards away

  Erection of a single storey rear/ side extension with roof alterations and associated works to the flat.

  Refused Full applications Extension Roofing 7 docs
  Small domestic

• 13 Gordon Road, Chiswick, London, W4 3LU

  P/2024/3718 Submitted 7 Nov 2024 50 yards away

  Certificate of Lawfulness for the proposed erection of an outrigger roof extension to the house.

  Granted Lawful development Extension 7 docs

• 13 Gordon Road, Chiswick, London, W4 3LU

  P/2024/1853 Submitted 5 Jun 2024 50 yards away

  Ground floor side infill extension and rear extension.

  Granted Householder Extension 14 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