30 Northcote Avenue, Isleworth, TW7 7JQ

This site has had 2 applications since 2026.

• P/2026/0771 Withdrawn

  30 Northcote Avenue, Isleworth, TW7 7JQ

  Certificate of lawfulness for the proposed erection of a single storey outbuilding to the rear of the house.

  Submitted 6 Mar 2026 Lawful development

1. 6 Aug 2026

   Received by Hounslow

2. 7 Aug 2026

   Validated

   Checked as complete and ready for consideration.

3. 12 Aug 2026

   Added to PlanIndex

4. 23 Aug 2026

   Status changed to REGISTERED: Under Consultation

   Previously REGISTERED: Valid.

5. 10 Sep 2026

   Status changed to REGISTERED: Under Assessment

   Previously REGISTERED: Under Consultation.

6. Decision

   Awaiting decision

   Decision expected by 2 October 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.

• 30 Northcote Avenue, Isleworth, TW7 7JQ

  P/2026/0771 Submitted 6 Mar 2026 50 yards away

  Certificate of lawfulness for the proposed erection of a single storey outbuilding to the rear of the house.

  Withdrawn Lawful development 3 docs
  Small domestic

• 42 Crane Avenue, Isleworth, TW7 7JW

  P/2026/1350 Submitted 5 May 2026 50 yards away

  Certificate of lawfulness for the proposed erection of a single storey rear extension to the house.

  Granted Lawful development Extension 6 docs
  Small domestic

• 42 Crane Avenue, Isleworth, TW7 7JW

  P/2026/2147 Submitted 22 Jul 2026 50 yards away

  Erection of a rear infill extension.

  Withdrawn Householder Extension 7 docs
  Domestic

• 59 Crane Avenue, Isleworth, TW7 7JR

  P/2026/2046 Submitted 10 Jul 2026 50 yards away

  Non material amendment to remove the unimplemented rear roof extension with front roof window and the window on the front elevation of planning permission P/2021/2921 (00313/59/P1) approved 10/11/2021 for the erection of a single storey rear extension and a rear roof extension with one front roof window and insertion of a window on the front elevation

  Granted Amendments Extension Windows or glazing 5 docs
  Small domestic

• 40 WOODSTOCK AVENUE, ISLEWORTH, TW7 7JE

  P/2023/0324 Submitted 1 Feb 2023 100 yards away

  Erection of a single storey rear extension with part first floor rear extension and rear roof extension to the house.

  Refused Householder Extension 22 docs
  Small domestic

• 31 Northcote Road Twickenham Richmond Upon Thames TW1 1PB

  06/1141/PS192 Submitted 11 Apr 2006 150 yards away

  Proposed Loft Conversion With Rear Dormer.

  Granted Prior approval Loft or dormer 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