42 Elmwood Road, Chiswick, London, W4 3DZ

1. 12 Aug 2026

   Received by Hounslow

2. 16 Aug 2026

   Added to PlanIndex

3. 6 Oct 2026

   Status changed to REGISTERED: Pending recommendation

   Previously REGISTERED: Under Assessment.

4. Decision

   Awaiting decision

   Decision expected by 7 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.

• LAND ADJACENT TO 946 GREAT WEST ROAD, BRENTFORD, TW8 9HF

  P/2021/3164 Submitted 3 Aug 2021 100 yards away

  Installation of an internally illuminated free standing digital advertisement hoarding, measuring approximately 6m x 3m following the removal of the existing advertisement hoarding.

  Refused Advertising 7 docs

• PAVEMENT NORTHSIDE OF GREAT WEST ROAD, BRENTFORD, TW8 9QG

  P/2023/0079 Submitted 9 Jan 2023 100 yards away

  Installation of an internally illuminated advertisement board elevated above the carriageway

  Refused Advertising 9 docs

• 55 Sutton Lane South, Chiswick, London, W4 3JR

  P/2026/0082 Submitted 12 Jan 2026 100 yards away

  Alterations to the existing single storey rear and side extension to allow the conversion of the existing residential house to three self contained flats with associated private amenity space, cycle and refuse storage

  Granted Full applications New dwelling Extension 27 docs
  Small domestic

• 19 Cedars Road, Chiswick, London, W4 3JP

  P/2026/1482 Submitted 18 May 2026 100 yards away

  100% historically approved · decision due ~7 Aug

  Certificate of lawfulness for the existing use of a House in Multiple Occupation.

  Awaiting decision Lawful development 2 docs

• 19 Cedars Road, Chiswick, W4 3JP

  P/2024/2649 Submitted 1 Aug 2024 100 yards away

  Change of use from a single family house (Class C3) to a House in Multiple Occupation (Class C4) for occupation by up to six persons.

  Refused Full applications 8 docs

• 18 Elmwood Road, Chiswick, London, W4 3DZ

  P/2024/3601 Submitted 30 Oct 2024 100 yards away

  Erection of a single storey rear extension following the demolition of the existing single storey rear infill conservatory and single storey rear extension.

  Granted Full applications Extension Demolition 23 docs
  Small domestic

• 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