31 ENNISMORE AVENUE, CHISWICK, LONDON, W4 1SE

1. 22 Oct 2019

   Received by Hounslow

2. 4 Dec 2019

   Decision issued: REFUSED (FULL PLANNING PERMISSION REQUIRED)

3. 26 Aug 2026

   Added to PlanIndex

Hounslow refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

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.

• Flat 1, 23 Ennismore Avenue, Chiswick, London, W4 1SE

  P/2025/2803 Submitted 18 Sep 2025 50 yards away

  64% historically approved · decision due ~9 Dec

  Erection of a single storey rear extension with fully glazed projecting roof light following the removal of the existing extension to the ground floor flat. Minor repairs to the front ground floor windows, replacement of the side window with like for like double glazed window, replacement of side door like for like, installation of an additional air conditioning unit and air source heat pump and basement tanking

  Decided Full applications Extension Loft or dormer +1 27 docs
  Small domestic

• 36 Ennismore Avenue, Chiswick, London, W4 1SF

  P/2024/3079 Submitted 16 Sep 2024 50 yards away

  Loft conversion with a rear dormer.

  Granted Householder Loft or dormer 17 docs
  Domestic

• 25A UPHAM PARK ROAD, CHISWICK, LONDON, W4 1PQ

  P/2021/2246 Submitted 4 Jun 2021 50 yards away

  Erection of a single storey rear infill extension to the ground floor flat

  Refused Full applications Extension 6 docs
  Small domestic

• 55 UPHAM PARK ROAD, CHISWICK, W4 1PQ

  P/2024/1290 Submitted 24 Apr 2024 50 yards away

  Certificate of Lawfulness for existing use as two self-contained residential units and existing development of a part single storey rear extension

  Granted Lawful development Extension 17 docs
  Small domestic

• FLAT 2 15 ENNISMORE AVENUE, CHISWICK, W4 1SE

  P/2021/2205 Submitted 3 Jun 2021 50 yards away

  Replacement of existing door and sidelight with a white UPVC door and sidelight on first floor front elevation.

  Granted Full applications 7 docs

• Stamford Brook Bus Garage, 74 Chiswick High Road, Chiswick, London, W4 1SY

  P/2025/3717 Submitted 15 Dec 2025 100 yards away

  Alterations to the existing windows on the east elevation.

  Granted Full applications Windows or glazing 9 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