138 Carville Crescent, Brentford, TW8 9RA

1. 2 Mar 2026

   Received by Hounslow

2. 10 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 27 Apr 2026

   Decision issued: LAWFNOTGRANT

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

• 138 Carville Crescent, Brentford, TW8 9RA

  P/2026/2257 Submitted 4 Aug 2026 0m away

  76% historically approved · decision due ~29 Sep

  Erection of a first floor rear extension.

  Awaiting decision Householder Extension 8 docs
  Domestic

• 138 Carville Crescent, Brentford, TW8 9RA

  P/2026/0830 Submitted 12 Mar 2026 0m away

  Erection of a single-storey side and wraparound rear extension to the house

  Refused Householder Extension 12 docs
  Small domestic

• 138 Carville Crescent, Brentford, TW8 9RA

  P/2026/1279 Submitted 28 Apr 2026 0m away

  Erection of a single storey rear extension to the house.

  Granted Full applications Extension 9 docs
  Small domestic

• 138 Carville Crescent Brentford TW8 9RA

  261745CONS Submitted 27 Apr 2026 17m away

  Single-storey side/rear extension (out of borough)

  Granted Outline Extension 9 docs
  Small domestic

• 138 Carville Crescent Brentford TW8 9RA

  261745CONS Submitted 27 Apr 2026 17m away

  Single-storey side/rear extension (out of borough)

  Granted Outline Extension 9 docs
  Small domestic

• 89 CARVILLE CRESCENT, BRENTFORD, TW8 9RA

  P/2019/3971 Submitted 1 Nov 2019 36m away

  Erection of a rear roof extension with two front roof windows to the house

  Granted Householder Extension Windows or glazing 6 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