851 - 853 Great West Road, Isleworth, TW7 5PD

This site has had 4 applications since 2026: 1 approved, 1 refused.

• P/2026/2034 Granted

  851-853 Great West Road, Isleworth, TW7 5PD

  Erection of a single storey rear extension

  Decided 1 Oct 2026 Householder
• P/2026/1317 Withdrawn

  851-853 Great West Road, Isleworth, TW7 5PD

  Erection of a single storey rear extension and part first floor rear extension to 851-53 Great West Road. Erection of a first floor side extension to 851 Great West Road.

  Submitted 30 Apr 2026 Householder
• PA/2026/1220 Refused

  851-853 Great West Road Isleworth TW7 5PD

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

  Decided 28 May 2026 Prior approval

1. 30 Jul 2026

   Received by Hounslow

2. 26 Aug 2026

   Added to PlanIndex

3. 17 Sep 2026

   Status changed to REGISTERED: Under Assessment

   Previously REGISTERED: Under Consultation.

4. 22 Sep 2026

   Validated

   Checked as complete and ready for consideration.

5. 9 Oct 2026

   Status changed to REGISTERED: Under Consultation

   Previously REGISTERED: Under Assessment.

6. Decision

   Awaiting decision

   Decision expected by 17 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 householder applications in a median of 63 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 851-855 GREAT WEST ROAD, ISLEWORTH, TW7 5PD

  P/2021/3142 Submitted 2 Aug 2021 50 yards away

  Erection of first floor side extensions over the existing garages and part single / part two storey rear extensions to three houses incorporating a Juliet balcony between 853 and 855

  Granted Householder Extension 14 docs
  Several homes

• 77 ROXBOROUGH AVENUE, ISLEWORTH, TW7 5HH

  P/2021/2984 Submitted 22 Jul 2021 50 yards away

  Erection of part single part two storey side and part single part two storey rear extension to the house

  Granted Householder Extension 6 docs
  Domestic

• 67 Roxborough Avenue, Isleworth, TW7 5HQ

  P/2026/0364 Submitted 5 Feb 2026 50 yards away

  Erection of a two storey side extension and a single storey rear extension to the house

  Granted Householder Extension 8 docs
  Small domestic

• 851-853 Great West Road, Isleworth, TW7 5PD

  P/2026/2034 Submitted 8 Jul 2026 100 yards away

  Erection of a single storey rear extension

  Granted Householder Extension 8 docs
  Small domestic

• 851-853 Great West Road, Isleworth, TW7 5PD

  P/2026/1317 Submitted 30 Apr 2026 100 yards away

  Erection of a single storey rear extension and part first floor rear extension to 851-53 Great West Road. Erection of a first floor side extension to 851 Great West Road.

  Withdrawn Householder Extension 3 docs
  Small domestic

• 851-853 Great West Road Isleworth TW7 5PD

  PA/2026/1220 Submitted 20 Apr 2026 100 yards away

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

  Refused Prior approval Extension 6 docs

• P/2026/2304 Granted

  18 Clifden Road, Brentford, TW8 0PF

  Erection of a side and rear extensions.

  Received 7 Aug, published by the council 12 Aug 2026 Householder
• P/2026/2804 Awaiting decision

  128 Durham Road, Feltham, TW14 0AE

  Erection of a detached outbuilding in the rear garden following demolition of existing shed.

  Received 2 Oct, published by the council 9 Oct 2026 Householder
• P/2026/2301 Granted

  4 Glebe Street, Chiswick, W4 2BG

  Erection of a front side and rear side infill extensions with alterations to the rear elevation, a rear side first floor infill extension with replacement of windows to the rear elevation and installation of new rooflights to the existing ground floor infill extension of the house

  Received 7 Aug, published by the council 16 Aug 2026 Householder
• P/2026/1167 Granted

  20 Firs Drive, Hounslow, TW5 9TD

  Erection of part one, part two-storey side extension following demolition of existing garage and part one, part two-storey rear extension. Raising of roof ridge, erection of rear roof extensions, and installation of one front roof window.

  Received 15 Apr, published by the council 26 Jul 2026 Householder
• P/2026/2025 Granted

  1 Kneller Gardens, Isleworth, TW7 7NP

  Erection of a single storey rear and first floor side extension incorporating the conversion of the existing garage to a habitable room

  Received 8 Jul, published by the council 26 Jul 2026 Householder