291 Hanworth Road, Hounslow, TW3 3SE

1. 25 Mar 2026

   Received by Hounslow

2. 18 May 2026

   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

• 293 Hanworth Road, Hounslow, TW3 3SE

  P/2026/0972 Submitted 25 Mar 2026 6m away

  Certificate of lawfulness for the existing use of a House in Multiple Occupation (Sui Generis) for up to 10 persons

  Granted Lawful development 6 docs

• 287 HANWORTH ROAD, HOUNSLOW, TW3 3RZ

  PA/2021/2390 Submitted 14 Jun 2021 32m away

  Ground floor rear extension 6 metres deep, maximum height of 3 metres, 3 metres high to the eaves

  Granted Prior approval Extension 5 docs

• 287 HANWORTH ROAD, HOUNSLOW, TW3 3RZ

  P/2021/2384 Submitted 14 Jun 2021 32m away

  Certificate of Lawfulness for the proposed erection of a rear roof extension incorporating hip to gable conversion and three front roof windows and the erection of a single storey detached outbuilding in the rear end to the garden to use as a game room/ gym room/ garden store to the house

  Granted Lawful development Extension Loft or dormer +1 5 docs
  Small domestic

• 285 HANWORTH ROAD, HOUNSLOW, TW3 3RZ

  PA/2021/2640 Submitted 28 Jun 2021 42m away

  Ground floor rear extension 8 metres deep, maximum height of 3.65 metres, 3 metres high to the eaves

  Granted Prior approval Extension 5 docs

• 1 HIBERNIA GARDENS, HOUNSLOW, TW3 3SB

  P/2019/3843 Submitted 23 Oct 2019 57m away

  Change of use from a Single Family House (Class C3) to House in Multiple Occupation with six bedrooms

  Refused Full applications 6 docs

• 328A HANWORTH ROAD, HOUNSLOW, TW3 3SH

  P/2023/0741 Submitted 7 Mar 2023 59m away

  Details of condition 3 (materials) submitted pursuant to planning permission 01254/328A/P3 dated 20/02/2023 for the erection of a part single part two part three storey rear extension and roof extensions to both sides of the existing house, conversion of the house into four flats, erection of two houses to the rear of the site with bin and cycle storage, parking and amenity spaces.

  Granted Conditions New dwelling Extension 16 docs
  Several homes

• 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