17 Roseheath Road,Hounslow,TW4 5HH

1. 8 Sep 2026

   Received by Hounslow

2. 17 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 3 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Hounslow took a median of 56 days over the applications it decided in the last year.

This application is with Hounslow for determination, against a statutory target of eight weeks. Over the last year Hounslow decided lawful development applications in a median of 55 days. More in our guide to how long planning decisions take.

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.

• 5 ROSEHEATH ROAD, HOUNSLOW, TW4 5HH

  P/2021/2140 Submitted 1 Jun 2021 45m away

  Certificate of Lawfulness for the proposed erection of a rear roof extension incorporating hip to gable conversion and two front roof windows to the house

  Granted Lawful development Extension Loft or dormer +1 5 docs

• 6 Masionette First And Second Floors,Marshall Close,Hounslow,TW4 5HJ

  P/2026/2217 Submitted 29 Jul 2026 143m away

  100% historically approved · decision due ~15 Oct

  Certificate of lawfulness for the proposed use of part of the house for administration relating to a private vehicle hire business.

  Awaiting decision Lawful development 3 docs

• 36 Midsummer Avenue, Hounslow, TW4 5BB

  PA/2026/0879 Submitted 17 Mar 2026 150m away

  Ground floor rear extension 6.00 metres deep, maximum height of 3.45 metres, 3.00 metres high to the eaves

  Granted Prior approval Extension 23 docs

• 36 Midsummer Avenue, Hounslow, TW4 5BB

  P/2026/2125 Submitted 21 Jul 2026 150m away

  Erection of a single storey rear extension and a single storey side extension following the demolition of the existing side garage.

  Granted Householder Extension Demolition 7 docs
  Small domestic

• 11 BEAULIEU CLOSE, HOUNSLOW, TW4 5EN

  P/2021/2093 Submitted 26 May 2021 155m away

  Erection of a single storey front extension to the house

  Refused Householder Extension 8 docs
  Small domestic

• 196 Wellington Road South, Hounslow, TW4 5JL

  P/2026/1952 Submitted 1 Jul 2026 165m away

  Certificate of lawfulness for the proposed replacement of like for like windows and external doors, external wall insulation with a rendered finish to match the existing rendered finish, new main roof mounted photovoltaic solar panel array and battery storage to the House in Multiple Occupation.

  Granted Lawful development Windows or glazing 8 docs

• 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