109 St Stephens Road, Hounslow, TW3 2BL

1. 11 Aug 2026

   Received by Hounslow

2. 16 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 6 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Hounslow took a median of 55 days over the applications it decided in the last year.

This application is with Hounslow for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

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

• 111 St Stephens Road, Hounslow, TW3 2BL

  P/2026/1210 Submitted 20 Apr 2026 8m away

  Works to tree in a Conservation Area. T1 False Acacia. Fell to ground level. Rear garden.

  Granted Trees 4 docs

• 111 St Stephens Road, Hounslow, TW3 2BL

  P/2025/3737 Submitted 17 Dec 2025 8m away

  Certificate of lawfulness for the proposed erection of a single storey detached outbuilding in the rear garden.

  Granted Lawful development 6 docs
  Small domestic

• 111 St Stephens Road, Hounslow, TW3 2BL

  P/2025/3739 Submitted 17 Dec 2025 8m away

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

  Granted Householder Extension Demolition 8 docs
  Small domestic

• 111 St Stephens Road, Hounslow, TW3 2BL

  P/2025/1369 Submitted 30 Apr 2025 8m away

  Works to tree within a conservation area - T5 False Acacia (Robinia pseudoacacia) - Fell to ground level

  Withdrawn Trees 2 docs

• 111 St Stephens Road, Hounslow, TW3 2BL

  P/2026/1231 Submitted 22 Apr 2026 8m away

  Non material amendment to remove the top triangular window and add a roof window following permission P/2025/3739 dated 09/02/2026 for Erection of a single storey rear extension following the demolition of the existing conservatory.

  Granted Amendments Extension Demolition +1 3 docs
  Small domestic

• 144 St Stephens Road, Hounslow, TW3 2BW

  P/2024/3480 Submitted 18 Oct 2024 39m away

  Works to trees within a conservation area: Back Garden T1 (Sycamore) x4 - Crown lift to 5m above ground. T2: (Ash) - Lift crown to 5m above ground level.

  Granted Trees 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