145 Hartham Road, Isleworth, TW7 5EZ

1. 20 Oct 2025

   Received by Hounslow

2. 11 Dec 2025

   Decision issued: GRANT

3. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 11 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.

• 153 HARTHAM ROAD, ISLEWORTH, TW7 5EZ

  P/2023/0088 Submitted 10 Jan 2023 50 yards away

  Certificate of Lawfulness for erection of rear roof extension with two front roof windows to the house

  Granted Lawful development Extension Windows or glazing 17 docs

• 6 Wood Lane, Isleworth, TW7 5ER

  P/2024/3186 Submitted 23 Sep 2024 50 yards away

  Details of conditions 5 (Materials) 6 (Landscaping) submitted pursuant to prior approval 01225/6/PA3 dated 05/02/2024 for the demolition of the existing two storey commercial building and replacement with a part three, part four storey building comprising of 20 apartments.

  Granted Conditions New dwelling Demolition 16 docs
  Major scheme

• 6 Wood Lane, Isleworth, TW7 5ER

  P/2024/3030 Submitted 10 Sep 2024 50 yards away

  Details of Condition 13a (Noise assessment) submitted pursuant to planning permission 01225/6/PA3 (PALL/2023/3950) dated 05/02/2024 for Prior approval for the demolition of the existing two storey commercial building and replacement with a part three, part four storey building comprising of 20 apartments.

  Granted Conditions New dwelling Demolition 10 docs
  Major scheme

• 18 Wood Lane, Isleworth, TW7 5ED

  PA/2026/1157 Submitted 15 Apr 2026 100 yards away

  Ground floor rear extension 6.00 metres deep, maximum height 3.20 metres, 3.00 metres high to the eaves.

  Granted Prior approval Extension 5 docs

• 18 Wood Lane, Isleworth, TW7 5ED

  P/2026/1776 Submitted 15 Jun 2026 100 yards away

  Certificate of Lawfulness for the proposed erection of a rear roof extension with hip-to-gable roof conversion, installation of two rooflights to the front roof slope, removal of the rear chimney stack, and erection of a detached outbuilding in the rear garden following the demolition of the existing element.

  Granted Lawful development Extension Loft or dormer +1 8 docs

• 18 Wood Lane, Isleworth, TW7 5ED

  P/2026/1777 Submitted 15 Jun 2026 100 yards away

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

  Granted Householder Extension 6 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