41 Northfield Road, Hounslow, TW5 9JQ

This site has had 2 applications since 2026.

• P/2026/1817 Awaiting decision

  41 Northfield Road, Hounslow, TW5 9JQ

  Certificate of lawfulness for the proposed erection of a single storey rear extension incorporating use to a habitable room.

  Submitted 18 Jun 2026 Lawful development

1. 21 Sep 2026

   Received by Hounslow

2. 30 Sep 2026

   Validated

   Checked as complete and ready for consideration.

3. 6 Oct 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 25 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.

• 41 Northfield Road, Hounslow, TW5 9JQ

  P/2026/1817 Submitted 18 Jun 2026 50 yards away

  100% historically approved · decision due ~12 Oct

  Certificate of lawfulness for the proposed erection of a single storey rear extension incorporating use to a habitable room.

  Awaiting decision Lawful development Extension 5 docs
  Small domestic

• 80 NORTHFIELD ROAD, HOUNSLOW, TW5 9JF

  P/2021/2853 Submitted 13 Jul 2021 50 yards away

  Erection of a part first floor rear extension to the house

  Granted Householder Extension 9 docs
  Domestic

• 17 NORTHFIELD ROAD, HOUNSLOW, TW5 9JQ

  P/2023/0723 Submitted 7 Mar 2023 100 yards away

  Erection of single storey rear extension and rear roof extension with front & rear roof windows to the house.

  Refused Householder Extension Windows or glazing 9 docs
  Small domestic

• 148 NORTHFIELD ROAD, HOUNSLOW, TW5 9JG

  PA/2021/2448 Submitted 17 Jun 2021 100 yards away

  Ground floor rear extension 5.50 metres deep, maximum height of 2.93 metres, 2.83 metres high to the eaves

  Refused Prior approval Extension 6 docs

• 64 NORTHFIELD ROAD, HOUNSLOW, TW5 9JF

  P/2021/1889 Submitted 13 May 2021 100 yards away

  Erection of a part single part two storey side extension to the house

  Refused Householder Extension 7 docs
  Domestic

• 164 NORTHFIELD ROAD, HOUNSLOW, TW5 9JG

  PA/2021/3615 Submitted 7 Sep 2021 100 yards away

  Ground floor rear extension 6.00 metres deep, maximum height 3.20 metres, 2.82 metres high to the eaves

  Granted Prior approval Extension 8 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