167 Spring Grove Road, Isleworth, TW7 4BJ

1. 17 Aug 2026

   Received by Hounslow

2. 23 Aug 2026

   Added to PlanIndex

3. 17 Sep 2026

   Status changed to REGISTERED: Under Assessment

   Previously REGISTERED: Under Consultation.

4. Decision

   Awaiting decision

   Decision expected by 12 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.

• 167-167A SPRING GROVE ROAD, ISLEWORTH, TW7 4BJ

  P/2021/3212 Submitted 6 Aug 2021 50 yards away

  Change of use of existing five bedroom dwelling house and six bedroom dwelling house into five one-bedroom flats, two two-bedroom flats and one three-bedroom flat with associated internal alterations. Erection of two first floor side extensions to both sides of 167 with front and rear roof extensions and conversion of existing garage to habitable room. Erection of a single storey side and first floor rear extension to 167a. Formation of vehicle access and amenity space, addition of cycle storage and waste and recycling storage with landscaping on site.

  Refused Full applications New dwelling Extension 16 docs
  Small domestic

• 24 Spencer Road, Isleworth, TW7 4BH

  P/2024/2730 Submitted 13 Aug 2024 150 yards away

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

  Granted Lawful development Extension Loft or dormer +1 4 docs

• 8 The Close, Isleworth, TW7 4BL

  P/2026/2715 Submitted 25 Sep 2026 150 yards away

  75% historically approved · decision due ~21 Nov

  Erection of a rear roof extension with hip to gable conversion with three front roof windows and first floor side extension and single storey rear extension.

  Awaiting decision Householder Extension Loft or dormer +1 8 docs
  Small domestic

• 8 The Close, Isleworth, TW7 4BL

  P/2026/2368 Submitted 17 Aug 2026 150 yards away

  Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and three front roof lights.

  Granted Lawful development Extension Loft or dormer 4 docs

• 100 North Drive, Hounslow, TW3 1PU

  P/2024/2784 Submitted 16 Aug 2024 150 yards away

  Certificate of Lawfulness for the proposed erection of a single storey rear extension and rear roof extension with a hip to gable conversion and three front roof windows

  Granted Lawful development Extension Loft or dormer +1 5 docs
  Small domestic

• 83-100 North Drive,Hounslow,TW3 1PU

  P/2024/3402 Submitted 11 Oct 2024 150 yards away

  Details of conditions 7 (materials) 8 (hard and soft landscaping) 11A (sustainable materials) 16 (electrical vehicle charging points) submitted pursuant to planning permission 00812/83-100/P1 (P/2023/1836) dated 16/10/2023 for the erection of six two-storey houses and one detached bungalow with an associated access road, private parking and amenity space following the demolition of the existing side extension at 100 North Drive.

  Granted Conditions Extension Demolition 20 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