18 ALKERDEN ROAD, CHISWICK, W4 2HP

1. 25 Apr 2024

   Received by Hounslow

2. 17 Dec 2024

   Decision issued: GRANT

3. 2 Sep 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

• 18 Alkerden Road, Chiswick, London, W4 2HP

  P/2026/0382 Submitted 6 Feb 2026 0m away

  Installation of a metal railing to the roof of rear ground floor extension to use as an amenity space/terrace.

  Refused Householder Extension 19 docs
  Domestic

• 12 Brackley Terrace,Chiswick,W4 2HJ

  P/2026/2179 Submitted 27 Jul 2026 51m away

  Erection of a single storey rear extension.

  Granted Householder Extension 8 docs
  Small domestic

• 16 Coombe Road, Chiswick, London, W4 2HR

  P/2025/3680 Submitted 11 Dec 2025 54m away

  Erection of a lower ground floor rear extension. Erection of a rear roof extension with a roof terrace and one front roof window to the house.

  Refused Householder Extension Windows or glazing 15 docs
  Domestic

• 16 Coombe Road, Chiswick, London, W4 2HR

  P/2026/1086 Submitted 2 Apr 2026 54m away

  Erection of a single storey rear extension to the house.

  Granted Householder Extension 19 docs
  Small domestic

• 22 COOMBE ROAD, CHISWICK, LONDON, W4 2HR

  P/2019/3849 Submitted 24 Oct 2019 54m away

  Erection of a single storey lower ground, part ground and part first floor rear extension to the house

  Granted Householder Extension 14 docs
  Small domestic

• 10 Swanscombe Road, Chiswick, W4 2HQ

  P/2026/1560 Submitted 22 May 2026 56m away

  Certificate of lawfulness for the proposed erection of a rear roof extension and rear outrigger extension.

  Granted Lawful development Extension 10 docs

• 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