15 Devonshire Gardens, Chiswick, London, W4 3TN

1. 26 May 2026

   Received by Hounslow

2. 26 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 21 July 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.

• 11 Coniston Close, Chiswick, London, W4 3UG

  P/2025/3292 Submitted 31 Oct 2025 50 yards away

  Fell dangerous tree (5 day dangerous tree). Fell mature Acacia with severe basal decay.

  Granted Trees 2 docs

• 7 Devonshire Gardens, Chiswick, London, W4 3TN

  P/2024/3180 Submitted 20 Sep 2024 50 yards away

  Felling of Salix babylonica tree within a conservation area.

  Granted Trees 4 docs

• 22 Coniston Close, Chiswick, London, W4 3UG

  P/2026/1126 Submitted 10 Apr 2026 50 yards away

  Works to tree within a conservation area: Robinia Pseudoacacia (T1) - Reduce all round by approximately 1.5 - 2 metres to increase light into the garden.

  Withdrawn Trees 2 docs

• 5, The Marais Bolton Road, Chiswick, London, W4 3TH

  P/2026/0867 Submitted 16 Mar 2026 50 yards away

  Works to Sycamore tree within a conservation area. Crown reduce by 1.5 metres, to provide more light to other plants.

  Granted Trees 4 docs

• 40 HARTINGTON ROAD, CHISWICK, LONDON, W4 3UB

  P/2021/1019 Submitted 16 Mar 2021 100 yards away

  Erection of a two storey side extension including attic floor new hipped roof over extension following partial demolition of the single storey side extension and alterations to the existing roof with four front roof windows to the house and two rear roof dormers

  Refused Householder Extension Loft or dormer +2 5 docs
  Small domestic

• 40 HARTINGTON ROAD, CHISWICK, LONDON, W4 3UB

  P/2021/2242 Submitted 4 Jun 2021 100 yards away

  Felling of Eucalyptus tree in the front garden.

  Granted Trees 10 docs

• P/2026/2623 Awaiting decision

  8 Lonsdale Road,Chiswick,W4 1ND

  Installation of external condenser at first floor level.

  Received 15 Sep, published by the council 17 Sep 2026 Householder
• P/2026/2125 Granted

  36 Midsummer Avenue, Hounslow, TW4 5BB

  Erection of a single storey rear extension and a single storey side extension following the demolition of the existing side garage.

  Received 21 Jul, published by the council 30 Jul 2026 Householder
• P/2026/2615 Awaiting decision

  48 Meadow Waye, Hounslow, TW5 9EZ

  Erection of a part first floor rear extension.

  Received 14 Sep, published by the council 17 Sep 2026 Householder
• P/2026/2619 Awaiting decision

  12 Letchworth Avenue, Feltham, TW14 9RY

  Erection of a single storey rear extension.

  Received 14 Sep, published by the council 17 Sep 2026 Householder
• P/2026/2600 Awaiting decision

  310 Lionel Road North, Brentford, TW8 9QX

  Erection of a rear roof extension.

  Received 14 Sep, published by the council 17 Sep 2026 Householder