851-853 Great West Road Isleworth TW7 5PD

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

• P/2026/2233 Awaiting decision

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

  Erection of a single storey rear extension to No. 851 and No. 853, first floor rear extension to No. 851 and No. 853 and a first-floor side extension to No. 851.

  Submitted 30 Jul 2026 Householder
• 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• P/2026/1317 Withdrawn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

1. 20 Apr 2026

   Received by Hounslow

2. 22 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 28 May 2026

   Decision issued: PRIOR APPROVAL DOES NOT COMPLY

4. 12 Aug 2026

   Added to PlanIndex

Hounslow refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

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

  P/2026/2034 Submitted 8 Jul 2026 50 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 50 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  Withdrawn Householder Extension 3 docs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

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

  P/2021/3142 Submitted 2 Aug 2021 100 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

• 67 Roxborough Avenue, Isleworth, TW7 5HQ

  P/2026/0364 Submitted 5 Feb 2026 100 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/2026/2233 Submitted 30 Jul 2026 100 yards away

  75% historically approved · decision due ~17 Nov

  Erection of a single storey rear extension to No. 851 and No. 853, first floor rear extension to No. 851 and No. 853 and a first-floor side extension to No. 851.

  Awaiting decision Householder Extension 8 docs
  Small domestic

• 850-852 GREAT WEST ROAD, ISLEWORTH, TW7 5NG

  P/2021/2546 Submitted 22 Jun 2021 100 yards away

  Erection of part single storey rear extensions to Flats B at both properties .

  Refused Full applications New dwelling Extension 5 docs
  Small domestic

• PA/2026/2437 Refused

  17 Orchard Road, Brentford, TW8 0QX

  Ground floor rear extension 5.51 metres deep, maximum height of 2.80 metres, 2.06 metres high to the eaves

  Received 26 Aug, published by the council 2 Sep 2026 Prior approval
• PA/2026/2481 Refused

  6 Speart Lane, Hounslow, TW5 9EF

  Ground floor rear extension 8.00 metres deep, maximum height of 3.00 metres, 2.80 metres high to the eaves

  Received 1 Sep, published by the council 5 Sep 2026 Prior approval
• PA/2026/2768 Awaiting decision

  86 Kneller Gardens, Isleworth, TW7 7NW

  Ground floor rear extension 4.50 metres, maximum height 3.20 metres, 2.70 metres high to the eaves.

  Received 30 Sep, published by the council 6 Oct 2026 Prior approval
• PA/2026/2393 Granted

  2 Letchworth Avenue, Feltham, TW14 9RY

  Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.85 metres high to the eaves

  Received 18 Aug, published by the council 23 Aug 2026 Prior approval
• PA/2026/2364 Granted

  9 Westbourne Road, Feltham, TW13 4LX

  Ground floor rear extension 4.5 metres deep, maximum height of 2.8 metres, 2.8 metres high to the eaves

  Received 13 Aug, published by the council 23 Aug 2026 Prior approval