44 Duke Road, Chiswick, W4 2DD

1. 30 Oct 2024

   Received by Hounslow

2. 2 Dec 2024

   Decision issued: GRANT

3. 16 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 38 Duke Road, Chiswick, London, W4 2DD

  P/2025/3600 Submitted 2 Dec 2025 16m away

  Erection of single storey rear infill extension to the house to form a wrap around extension and a rooflight to existing single storey rear extension.

  Granted Householder Extension Loft or dormer 9 docs
  Small domestic

• 83 Glebe Street, Chiswick, London, W4 2BE

  P/2025/3145 Submitted 20 Oct 2025 37m away

  Replacement of the ground floor flat's existing ground floor front bay window projection's central front door with a sash window and two side bay windows with replacement sash windows, existing ground floor front window with a replacement single front door and existing ground floor side window with a replacement sash window, installation of an additional ground floor side sash window and ground floor front door canopy to the ground floor flat and erection of a replacement front and side boundary wall with a front pedestrian gate, side trelice fence and two replacement side waste stores with side double doors to the ground floor flat's front garden.

  Granted Householder Windows or glazing 10 docs
  Small domestic

• 37-39 DUKE ROAD, CHISWICK, LONDON, W4 2BA

  P/2019/3878 Submitted 25 Oct 2019 39m away

  Erection of a single storey rear extension to both houses

  Granted Householder Extension 9 docs
  Small domestic

• 28 DUKE ROAD, CHISWICK, LONDON, W4 2DD

  P/2021/2030 Submitted 24 May 2021 41m away

  Certificate of Lawfulness for the erection of a rear roof dormer extension and roof extension to the two storey rear outrigger, and two front roof windows to the house.

  Granted Lawful development Extension Loft or dormer +1 10 docs

• 28 DUKE ROAD, CHISWICK, LONDON, W4 2DD

  P/2021/2031 Submitted 24 May 2021 41m away

  Erection of a single storey rear infill extension to the house.

  Granted Householder Extension 11 docs
  Small domestic

• 38 and 40 Duke Road Chiswick London W4 2DD

  P/2026/0826 Submitted 11 Mar 2026 41m away

  Erection of side infill extensions at 38 and 40 Duke Road, and replacement of the rear extension at 38 Duke Road, including installation of rooflights

  Granted Householder Extension Loft or dormer 22 docs
  Domestic

• P/2026/2033 Granted

  3 Benedict Drive, Feltham, TW14 8JH

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

  8 Jul 2026 Lawful development
• P/2026/2027 Granted

  115 Northumberland Crescent, Feltham, TW14 9SP

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

  8 Jul 2026 Lawful development
• P/2026/2009 Granted

  3 Brainton Avenue, Feltham, TW14 0AZ

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

  7 Jul 2026 Lawful development
• P/2026/2014 Granted

  82 Sussex Avenue, Isleworth, TW7 6LB

  Certificate of lawfulness for the proposed erection of a rear roof extension, a porch to the front of the house, and a front roof window.

  7 Jul 2026 Lawful development
• P/2026/2473 Awaiting decision

  16 Somerset Waye, Hounslow, TW5 9HG

  Certificate of lawfulness for the proposed erection of a rear roof extension with two roof windows to the front and alterations to the existing side roof from flat roof to pitched roof.

  1 Sep 2026 Lawful development