82 Sussex Avenue, Isleworth, TW7 6LB

1. 7 Jul 2026

   Received by Hounslow

2. 26 Jul 2026

   Added to PlanIndex

3. 1 Sep 2026

   Decision issued: LAWFNOTGRANT

Hounslow granted permission on 1 September 2026, 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.

• 34 ESSEX AVENUE, ISLEWORTH, TW7 6LF

  P/2023/0815 Submitted 14 Mar 2023 80m away

  Certificate of Lawfulness for a single storey rear extension and a skylight following demolition of the existing conservatory

  Granted Lawful development Extension Demolition 12 docs
  Small domestic

• 11 CLAYTON ROAD, ISLEWORTH, TW7 6LE

  P/2023/0311 Submitted 31 Jan 2023 107m away

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

  Refused Householder Extension 8 docs
  Domestic

• 5 ESSEX AVENUE, ISLEWORTH, TW7 6LF

  P/2023/0166 Submitted 17 Jan 2023 109m away

  Erection of first floor extension with rear loft dormer to roof space, front porch and replacement of existing rear extension, following the demolition of the existing single storey side extension and rear extension, conservatory and attached single storey garage - amended description

  Withdrawn Householder Extension Loft or dormer +1 19 docs
  Small domestic

• 133 Woodland Gardens, Isleworth, TW7 6LU

  P/2026/0872 Submitted 16 Mar 2026 121m away

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

  Granted Lawful development Extension Loft or dormer +1 5 docs

• 156 WOODLAND GARDENS, ISLEWORTH, TW7 6LR

  PA/2023/0305 Submitted 31 Jan 2023 121m away

  Ground floor rear extension 4 metres deep, maximum height of 3 metres, 3 metres high to the eaves

  Granted Prior approval Extension 8 docs

• 156 WOODLAND GARDENS, ISLEWORTH, TW7 6LR

  P/2023/0301 Submitted 31 Jan 2023 121m away

  Certificate of lawfulness for erection of single storey rear & side extension with rear door alterations. Erection of a rear roof extension with hip to gable conversion and front roof windows including a vehicular access to the front of the house.

  Granted Lawful development Extension Loft or dormer +1 10 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.

  20 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.

  10 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.

  12 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.

  17 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.

  9 Sep 2026 Lawful development