12 Legrace Avenue, Hounslow, TW4 7RS

1. 22 Dec 2025

   Received by Hounslow

2. 4 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 7 May 2026

   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

• 12 Legrace Avenue, Hounslow, TW4 7RS

  P/2026/0887 Submitted 17 Mar 2026 0m away

  Erection of a two-storey side and part first, part single storey rear extension. Erection of a rear roof extension with hip to gable conversion and a Juliet balcony, four front roof windows, and a front porch to the house.

  Refused Householder Extension Loft or dormer +1 6 docs
  Small domestic

• 12 Legrace Avenue, Hounslow, TW4 7RS

  P/2026/2470 Submitted 28 Aug 2026 0m away

  76% historically approved · decision due ~23 Oct

  Erection of a two storey side extension, single storey rear extension and part first floor rear extension, together with a hip to gable roof extension, rear roof extension incorporating a Juliet balcony, and installation of four front roof windows to the house

  Awaiting decision Householder Extension Loft or dormer +1 4 docs
  Small domestic

• 12 Legrace Avenue, Hounslow, TW4 7RS

  PA/2025/3789 Submitted 22 Dec 2025 0m away

  Ground floor rear extension 6.00 metres deep, maximum height of 3.50 metres, 2.70 metres high to the eaves

  Granted Prior approval Extension 5 docs

• 18 BASILDENE ROAD, HOUNSLOW, TW4 7LE

  PA/2021/2770 Submitted 7 Jul 2021 64m away

  Ground floor rear extension 6.00 metres deep, maximum height of 3.20 metres, 3.00 metres high to the eaves

  Granted Prior approval Extension 4 docs

• 100 LELA AVENUE, HOUNSLOW, TW4 7RY

  PA/2021/3167 Submitted 3 Aug 2021 69m away

  Ground floor rear extension 6 metres deep, maximum height of 3 metres, 2.8 metres high to the eaves

  Granted Prior approval Extension 6 docs

• 18 Kevin Close, Hounslow, TW4 7RX

  P/2024/3070 Submitted 13 Sep 2024 103m away

  Proposal for the erection of a two-storey side and part two-storey rear extension.

  Granted Householder Extension 11 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