25 Cambridge Road, Hounslow, TW4 7BT

1. 19 Nov 2025

   Received by Hounslow

2. 3 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

• 25 Cambridge Road, Hounslow, TW4 7BT

  P/2025/3685 Submitted 11 Dec 2025 0m away

  Retrospective application for the erection of a two-storey side extension, part first floor rear extension and a single storey rear extension to the house.

  Granted Householder Extension 6 docs
  Small domestic

• 25 Cambridge Road, Hounslow, TW4 7BT

  P/2025/3075 Submitted 13 Oct 2025 0m away

  Erection of part single part two storey side extension and part first floor rear extension to the house.

  Granted Householder Extension 6 docs
  Domestic

• 20 CAMBRIDGE ROAD, HOUNSLOW, TW4 7BS

  P/2019/3874 Submitted 25 Oct 2019 50m away

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

  Withdrawn Lawful development Extension Loft or dormer +1 4 docs

• 17 THE GREENWAY, HOUNSLOW, TW4 7AJ

  P/2021/2632 Submitted 28 Jun 2021 80m away

  Erection of a single storey rear extension to the house

  Granted Householder Extension 7 docs
  Small domestic

• 15 THE GREENWAY, HOUNSLOW, TW4 7AJ

  PA/2021/2906 Submitted 16 Jul 2021 92m away

  Ground floor rear extension 6.00 metres deep, maximum height 3.80 metres, 2.60 metres high to the eaves

  Granted Prior approval Extension 4 docs

• 94 Wellington Road North, Hounslow, TW4 7AA

  P/2025/0729 Submitted 10 Mar 2025 103m away

  65% historically approved · decision due ~3 Jul

  Erection of two semi-detached houses with private amenity space, refuse area and car parking following the demolition of existing bungalow

  Awaiting decision Full applications Demolition 27 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