126 Chinchilla Drive, Hounslow, TW4 7NT

1. 3 Feb 2026

   Received by Hounslow

2. 16 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 25 Mar 2026

   Decision issued: GRANT

4. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 25 March 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 8 Raccoon Way, Hounslow, TW4 7PJ

  P/2025/2833 Submitted 22 Sep 2025 84m away

  Erection of single storey rear extension following demolition of existing conservatory.

  Granted Householder Extension Demolition 18 docs
  Small domestic

• 72 GREAT SOUTH-WEST ROAD, HOUNSLOW, TW4 7NF

  P/2023/0248 Submitted 25 Jan 2023 123m away

  Erection of a single storey side extension to the house

  Withdrawn Householder Extension 4 docs
  Small domestic

• 41 Lela Avenue, Hounslow, TW4 7RU

  PA/2026/0701 Submitted 2 Mar 2026 161m away

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

  Granted Prior approval Extension 6 docs

• 38 GREAT SOUTH-WEST ROAD, HOUNSLOW, TW4 7NF

  P/2021/2922 Submitted 19 Jul 2021 184m away

  Certificate of Lawfulness for hip to gable conversion and erection of rear roof extension with two roof lights on the front slope.

  Granted Lawful development Extension Loft or dormer 5 docs

• 18 Kevin Close, Hounslow, TW4 7RX

  P/2024/3070 Submitted 13 Sep 2024 185m away

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

  Granted Householder Extension 11 docs
  Domestic

• 35 Legrace Avenue, Hounslow, TW4 7RT

  PA/2025/3660 Submitted 9 Dec 2025 206m away

  Ground floor rear extension 3.72 metres deep, maximum height 3.55 metres, 2.58 metres high to the eaves.

  Granted Prior approval Extension 4 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