39 Summerhouse Avenue, Hounslow, TW5 9DJ

1. 17 Sep 2025

   Received by Hounslow

2. 25 Sep 2025

   Validated

   Checked as complete and ready for consideration.

3. 19 Nov 2025

   Decision issued: APPROVED

4. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 19 November 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

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.

• 35 Summerhouse Avenue, Hounslow, TW5 9DJ

  P/2024/3743 Submitted 11 Nov 2024 50 yards away

  Erection of a hip to gable and rear roof extension to allow the change of use from a single family house (C3) to a House in Multiple Occupation (C4) for up to six people

  Withdrawn Full applications Extension Loft or dormer 15 docs

• 45 Summerhouse Avenue, Hounslow, TW5 9DJ

  P/2026/1079 Submitted 31 Mar 2026 50 yards away

  75% historically approved · decision due ~26 May

  Erection of single storey rear and front porch extension to the house.

  Awaiting decision Householder Extension 3 docs
  Small domestic

• 45 Summerhouse Avenue, Hounslow, TW5 9DJ

  P/2025/3466 Submitted 18 Nov 2025 50 yards away

  Erection of single storey rear and front porch extension to the house.

  Withdrawn Householder Extension 3 docs
  Small domestic

• 53 SUMMERHOUSE AVENUE, HOUNSLOW, TW5 9DJ

  P/2021/2042 Submitted 24 May 2021 50 yards away

  Erection of a front/side infill extension.

  Granted Householder Extension 7 docs
  Domestic

• 2 St Leonards Gardens, Hounslow, TW5 9DH

  PA/2025/3784 Submitted 22 Dec 2025 50 yards away

  Ground floor rear extension 6.00 metres deep, maximum height of 3.20 metres, 2.90 metres high to the eaves

  Refused Prior approval Extension 9 docs

• 56 Summerhouse Avenue, Hounslow, TW5 9DF

  P/2026/1384 Submitted 7 May 2026 100 yards away

  Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and front and side roof windows to the house.

  Granted Lawful development Extension Loft or dormer +1 4 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