45 Summerhouse Avenue, Hounslow, TW5 9DJ

This site has had 2 applications since 2025.

• P/2025/3466 Withdrawn

  45 Summerhouse Avenue, Hounslow, TW5 9DJ

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

  Submitted 18 Nov 2025 Householder

1. 31 Mar 2026

   Received by Hounslow

2. 12 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 26 May 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 55 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 62 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.

• 45 Summerhouse Avenue, Hounslow, TW5 9DJ

  P/2025/3466 Submitted 18 Nov 2025 0m away

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

  Withdrawn Householder Extension 3 docs
  Small domestic

• 39 Summerhouse Avenue, Hounslow, TW5 9DJ

  P/2025/2789 Submitted 17 Sep 2025 24m away

  Erection of single storey front porch extension to the house.

  Granted Householder Extension 5 docs
  Small domestic

• 35 Summerhouse Avenue, Hounslow, TW5 9DJ

  P/2024/3743 Submitted 11 Nov 2024 38m 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  Withdrawn Full applications Extension Loft or dormer 15 docs

• 2 St Leonards Gardens, Hounslow, TW5 9DH

  PA/2025/3784 Submitted 22 Dec 2025 41m 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 64m 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

• 8 Beaufort Gardens, Hounslow, TW5 9DL

  P/2025/3243 Submitted 27 Oct 2025 109m away

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

  Granted Lawful development Extension Loft or dormer +1 10 docs

• P/2026/2047 Granted

  9 Borough Road, Isleworth, TW7 5DY

  Erection of a single storey rear extension.

  10 Jul 2026 Householder
• P/2026/1858 Granted

  8 CONNAUGHT AVENUE, HOUNSLOW, TW4 5BW

  Erection of single storey front extension to the outbuilding for used as storage, office and a Gym. Following part demolition of the outbuilding.

  23 Jun 2026 Householder
• P/2026/2503 Awaiting decision

  25 Arnold Crescent, Isleworth, TW7 7NS

  Erection of a single storey rear, two storey side extension, and rear roof extension with two front roof windows to the house.

  3 Sep 2026 Householder
• P/2026/1522 Granted

  4 Camborne Way, Hounslow, TW5 0PW

  Erection of a single storey rear extension and reduction in width of the existing side and rear extension.

  20 May 2026 Householder
• P/2026/2024 Granted

  20 Hartland Road, Isleworth, TW7 6RH

  Erection of a rear roof extension with windows to the front of the house.

  8 Jul 2026 Householder