37 Wellington Avenue, Hounslow, TW3 3SY

1. 5 Nov 2025

   Received by Hounslow

2. 2 Dec 2025

   Decision issued: GRANT

3. 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

• 37 Wellington Avenue, Hounslow, TW3 3SY

  P/2025/3441 Submitted 17 Nov 2025 0m away

  Erection of a front porch extension to the house.

  Granted Householder Extension 6 docs
  Small domestic

• 207 CROMWELL ROAD, HOUNSLOW, TW3 3QW

  PA/2023/0830 Submitted 14 Mar 2023 87m away

  Ground floor rear extension 5.00 metres deep, maximum height 3.00 metres, 3.00 metres high to the eaves

  Granted Prior approval Extension 9 docs

• 177 Cromwell Road, Hounslow, TW3 3QW

  P/2025/2836 Submitted 22 Sep 2025 103m away

  Conversion of a dwelling house into two self-contained flats incorporating a front roof window to the house.

  Withdrawn Full applications New dwelling Windows or glazing 30 docs
  Domestic

• 58 VICTORIA AVENUE, HOUNSLOW, TW3 3ST

  PA/2019/4233 Submitted 25 Nov 2019 110m away

  Ground floor rear extension 4 metres deep, maximum height of 2.9 metres, 2.9 metres high to the eaves

  Granted Prior approval Extension 7 docs

• 6 Roseville Avenue, Hounslow, TW3 3TD

  P/2026/2221 Submitted 30 Jul 2026 121m away

  76% historically approved · decision due ~13 Oct

  Erection of a single storey rear extension.

  Awaiting decision Householder Extension 16 docs
  Small domestic

• 237 Cromwell Road, Hounslow, TW3 3QT

  P/2025/2671 Submitted 3 Sep 2025 149m away

  Non Material Amendment to change the roofing material of the approved raised roof of permission P/2024/4173 dated 12/03/2025 for Erection of replacement roof with increase in height to the existing conservatory to allow conversion into sitting room to the house

  Granted Amendments Extension Roofing 6 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