16 Eton Avenue, Hounslow, TW5 0HB

1. 9 Sep 2025

   Received by Hounslow

2. 17 Sep 2025

   Validated

   Checked as complete and ready for consideration.

3. 5 Nov 2025

   Decision issued: GRANT

4. 12 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

• 16 Eton Avenue, Hounslow, TW5 0HB

  PA/2025/2719 Submitted 9 Sep 2025 0m away

  Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.95 metres high to the eaves

  Granted Prior approval Extension 4 docs

• 16 Eton Avenue, Hounslow, TW5 0HB

  P/2025/2721 Submitted 9 Sep 2025 0m away

  Erection of a single storey side extension and alterations to the existing single storey rear extension.

  Granted Householder Extension 5 docs
  Small domestic

• 25 Eton Avenue, Hounslow, TW5 0HB

  P/2026/1659 Submitted 4 Jun 2026 54m away

  Variation of condition 2 (Approved plans) to increase set-back of single storey side extension, increase width of single storey side extension, and alterations in windows and roof lights following permission P/2025/2258 dated 22/09/2025 for Erection of a single storey side and rear extension with two roof lanterns following the demolition of the existing extension to the house.

  Granted Conditions Extension Loft or dormer +2 10 docs
  Small domestic

• 3 Eton Avenue, Hounslow, TW5 0HB

  P/2026/0733 Submitted 4 Mar 2026 57m away

  Change of use from a house (C3) into a residential care home (Use Class C2)

  Refused Full applications 11 docs

• 32 ETON AVENUE, HOUNSLOW, TW5 0HB

  P/2021/2141 Submitted 1 Jun 2021 64m away

  Erection of a first floor side extension.

  Granted Householder Extension 5 docs
  Domestic

• 30 Winchester Avenue, Hounslow, TW5 0HA

  P/2026/0034 Submitted 7 Jan 2026 81m away

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

  Granted Lawful development Extension Loft or dormer +1 5 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