23 WILMINGTON AVENUE, CHISWICK, W4 3HA

This site has had 2 applications since 2023: 0 approved, 2 refused.

• P/2023/0126 Refused

  23 WILMINGTON AVENUE, CHISWICK, W4 3HA

  Certificate of Lawfulness for erection of rear roof extension with loft conversion and front roof windows to the house

  Decided 28 Feb 2023 Lawful development

1. 12 Jan 2023

   Received by Hounslow

2. 17 Jan 2023

   Validated

   Checked as complete and ready for consideration.

3. 28 Feb 2023

   Decision issued: REFUSED (FULL PLANNING PERMISSION REQUIRED)

4. 23 Sep 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.

• 23 WILMINGTON AVENUE, CHISWICK, W4 3HA

  P/2023/0126 Submitted 12 Jan 2023 50 yards away

  Certificate of Lawfulness for erection of rear roof extension with loft conversion and front roof windows to the house

  Refused Lawful development Extension Loft or dormer +1 6 docs

• 11 Wilmington Avenue, Chiswick, London, W4 3HA

  P/2025/3402 Submitted 12 Nov 2025 50 yards away

  Works to tree within a conservation area. Betula pendula (T1). Carry out a minor crown reduction of overhang to the neighbouring property (no.9) and its outbuilding, reducing secondary growth back by up to 2 metres as indicated on the marked photos. Crown lift low branches to 5 metres above ground level.

  Granted Trees 4 docs

• 12 WILMINGTON AVENUE, CHISWICK, LONDON, W4 3HA

  P/2023/0846 Submitted 16 Mar 2023 50 yards away

  Erection of an enlarged single storey rear extension and rear roof extension with one front roof window, installation of air conditioning unit to ground floor rear extension's roof, erection of 1.8m rear garden boundary walls

  Granted Householder Extension Windows or glazing 12 docs
  Small domestic

• 6 Wilmington Avenue, Chiswick, London, W4 3HA

  P/2026/1139 Submitted 13 Apr 2026 50 yards away

  Works to four trees within a conservation area: T1 Yew - Fell to ground and grind stump to approximately 300mm below ground level. T2 Apple - Fell to ground and grind stump to approximately 300mm below ground level. T3 Crab Apple - Fell to ground and grind stump to approximately 300mm below ground level. T5 Apple - Fell to ground and grind stump to approximately 300mm below ground level.

  Granted Trees 4 docs

• 6 WILMINGTON AVENUE, CHISWICK, LONDON, W4 3HA

  P/2023/1051 Submitted 3 Apr 2023 50 yards away

  Work to Yew tree T1 in rear garden within conservation area. Reduce in height by 4m and side width by 3m to contain the Yew tree within the garden space, and away from the house property.

  Granted Trees 4 docs

• 6 Wilmington Avenue, Chiswick, London, W4 3HA

  P/2025/3771 Submitted 19 Dec 2025 50 yards away

  Erection of a rear roof extension and two front roof windows to the house

  Granted Householder Extension Windows or glazing 9 docs
  Domestic

• P/2026/2675 Awaiting decision

  17 Saxon Avenue, Feltham, TW13 5JJ

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

  Received 21 Sep, published by the council 23 Sep 2026 Lawful development
• P/2026/2668 Awaiting decision

  45 Shelley Crescent, Hounslow, TW5 9BQ

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

  Received 21 Sep, published by the council 23 Sep 2026 Lawful development
• P/2026/2651 Awaiting decision

  3 Clayponds Avenue, Brentford, TW8 9QQ

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

  Received 17 Sep, published by the council 20 Sep 2026 Lawful development
• P/2026/2627 Awaiting decision

  23 Elmgate Avenue, Feltham, TW13 7BU

  Certificate of lawfulness for the proposed change of use from residential house Class C3a to a residential home for up to 3 young people aged between 7 and 18 Class C2

  Received 15 Sep, published by the council 20 Sep 2026 Lawful development
• P/2026/2631 Awaiting decision

  17 Northumberland Avenue, Isleworth, TW7 5HZ

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

  Received 15 Sep, published by the council 20 Sep 2026 Lawful development