20 Leigham Drive, Isleworth, TW7 5LU

1. 5 Nov 2024

   Received by Hounslow

2. 19 Nov 2024

   Decision issued: LAWFNOTGRANT

3. 3 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 19 November 2024, 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.

• 28 Leigham Drive, Isleworth, TW7 5LU

  P/2026/1857 Submitted 23 Jun 2026 39m away

  Erection of a single storey side and rear extension.

  Refused Householder Extension 8 docs
  Small domestic

• 732 Great West Road, Isleworth, TW7 5LT

  P/2025/2576 Submitted 21 Aug 2025 76m away

  Erection of a single storey rear extension to the house

  Granted Householder Extension 8 docs
  Small domestic

• 732 Great West Road, Isleworth, TW7 5LT

  P/2025/2855 Submitted 23 Sep 2025 76m away

  Felling of Eucalyptus tree within a conservation area.

  Granted Trees 4 docs

• 150 Wood Lane, Isleworth, TW7 5EQ

  P/2025/3080 Submitted 13 Oct 2025 94m away

  Erection of two storey side, part single, part two storey rear extension, and rear roof extension with two front roof windows to allow for the conversion of the house into five self contained flats with associated car parking and cycle and bin storage.

  Granted Full applications New dwelling Extension +1 44 docs

• 740 Great West Road, Isleworth, TW7 5LT

  P/2025/2835 Submitted 22 Sep 2025 101m away

  Erection of roof extensions and elevational alterations, including conversion of a hipped roof to a gabled crown roof with increased ridge height, a rear roof extension, and the installation of two rooflights to the house.

  Refused Householder Extension Loft or dormer +1 6 docs
  Domestic

• 740 Great West Road, Isleworth, TW7 5LT

  P/2026/0653 Submitted 25 Feb 2026 101m away

  Erection of a single-storey detached outbuilding following demolition of the existing outbuilding.

  Refused Householder Demolition 6 docs
  Small domestic

• P/2026/2118 Granted

  54 Amhurst Gardens, Isleworth, TW7 6AJ

  Certificate of lawfulness for the proposed erection of a rear roof extension with front roof windows.

  Received 20 Jul, published by the council 26 Jul 2026 Lawful development
• P/2026/2580 Awaiting decision

  50B Paxton Road, Chiswick, London, W4 2QX

  Certificate of lawfulness for the existing use of a first floor self contained flat.

  Received 10 Sep, published by the council 17 Sep 2026 Lawful development
• P/2026/2332 Granted

  43 Dawes Avenue, Isleworth, TW7 7JS

  Certificate of Lawfulness for the proposed hip to gable conversion, front roof lights and erection of a rear roof extension to the house.

  Received 12 Aug, published by the council 16 Aug 2026 Lawful development
• P/2026/2089 Granted

  18 Central Avenue, Hounslow, TW3 2QH

  Certificate of lawfulness for the existing use of the rear extension as a self contained flat.

  Received 17 Jul, published by the council 26 Jul 2026 Lawful development
• P/2026/2566 Awaiting decision

  109 Wood Lane, Isleworth, TW7 5EG

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

  Received 9 Sep, published by the council 17 Sep 2026 Lawful development