10 Haslemere Avenue, Hounslow, TW5 9UT

1. 26 Aug 2026

   Received by Hounslow

2. 2 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 21 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 lawful development applications in a median of 56 days. More in our guide to how long planning decisions take.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 508 Bath Road, Hounslow, TW5 9UP

  P/2024/1826 Submitted 4 Jun 2024 50 yards away

  Erection of rear single storey pitched roof, rear infill extension and raising of garage roof

  Granted Householder Extension 12 docs
  Small domestic

• 13 Cedar Road, Hounslow, TW4 7QL

  PA/2025/2702 Submitted 5 Sep 2025 100 yards away

  Ground floor rear extension 6.00 metres deep, maximum height of 2.80 metres, 2.80 metres high to the eaves following demolition of existing out-building to the rear of the existing house

  Granted Prior approval Extension Demolition 7 docs

• 13 Cedar Road, Hounslow, TW4 7QL

  P/2025/2738 Submitted 10 Sep 2025 100 yards away

  Certificate of lawfulness for the proposed erection of a rear roof extension with front roof windows and a detached single storey outbuilding

  Granted Lawful development Extension Windows or glazing 7 docs
  Small domestic

• 113 To 129 Travellers Way, Hounslow, TW4 7QB

  P/2026/2443 Submitted 26 Aug 2026 100 yards away

  5-day notice to fell dead, fallen and unstable Birch T12 within TPO 104

  Granted Trees 2 docs

• 15 HASLEMERE AVENUE, HOUNSLOW, TW5 9UT

  PA/2019/4052 Submitted 8 Nov 2019 100 yards away

  Ground floor rear extension 6 metres deep, maximum height of 3 metres, 2.85 metres high to the eaves

  Withdrawn Prior approval Extension 2 docs

• 486 Bath Road, Hounslow, TW5 9UP

  P/2024/2044 Submitted 21 Jun 2024 150 yards away

  Details of condition 20 (final detailed drainage design) submitted pursuant to the Planning Permission 00083/486/P15 approved 24 June 2021 for the demolition of the existing buildings and redevelopment of the site to provide 21 residential units (C3) within a part three, part four and part set back six storey building with associated amenity space, landscaping, basement car parking and all associated works.

  Granted Conditions Demolition 8 docs

• P/2026/2813 Awaiting decision

  150 Wood Lane, Isleworth, TW7 5EQ

  (GSGS877009741) Certificate of lawfulness proposed for the erection of a single storey outbuilding to be used as a home gym / playroom / shed in the rear garden of the house

  Received 5 Oct, published by the council 9 Oct 2026 Lawful development
• P/2026/2334 Granted

  69 Central Avenue, Hounslow, TW3 2QW

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

  Received 12 Aug, published by the council 16 Aug 2026 Lawful development
• P/2026/2459 Granted

  2 Letchworth Avenue, Feltham, TW14 9RY

  Certificate of Lawfulness for the proposed hip to gable roof conversion, installation of two front roof windows, and erection of a rear roof extension to the existing house.

  Received 28 Aug, published by the council 5 Sep 2026 Lawful development
• P/2026/2787 Awaiting decision

  13 Denbigh Road, Hounslow, TW3 4DU

  Certificate of Lawfulness for the proposed erection of a detached outbuilding in the rear garden.

  Received 1 Oct, published by the council 9 Oct 2026 Lawful development
• P/2026/2790 Awaiting decision

  14 Old Farm Close, Hounslow, TW4 7AB

  Certificate of lawfulness for the proposed erection of a rear roof extension and two front roof windows to the house.

  Received 1 Oct, published by the council 6 Oct 2026 Lawful development