171 French Street Sunbury-on-Thames TW16 5JY

1. 20 Oct 2026

   Received by Spelthorne

2. 2 Nov 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 15 December 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Spelthorne took a median of 56 days over the applications it decided in the last year.

This application is with Spelthorne for determination, against a statutory target of eight weeks. Over the last year Spelthorne decided householder applications in a median of 58 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 175 French Street Sunbury-on-Thames TW16 5JY

  24/01169/TCA Submitted 2 Oct 2024 50 yards away

  Tree in the Lower Sunbury Conservation Area - 1 x Birch (shown as T1 on submitted plan) - Reduce height by approximately 3m and lateral branches by up to 2.5m to leave a well balanced shape.

  Granted Trees 8 docs

• 155 French Street Sunbury-on-Thames TW16 5JY

  23/00165/CPD Submitted 10 Feb 2023 50 yards away

  Certificate of Lawfulness for the proposed development of a front porch.

  Withdrawn Lawful development Extension 8 docs
  Small domestic

• 41 Kingsmead Avenue Sunbury-on-Thames TW16 5HL

  25/01102/HOU Submitted 8 Sep 2025 50 yards away

  Erection of proposed first floor rear extension and single storey rear extension.

  Granted Householder Extension 10 docs
  Small domestic

• 179 French Street Sunbury-on-Thames TW16 5JY

  24/01171/TCA Submitted 2 Oct 2024 50 yards away

  Amended description:- Trees in the Lower Sunbury Conservation Area- 1 x Eucalyptus (shown as T2 on submitted plan) - Reduce height by approximately 3 - 4m-1 x Bay (shown as T3 on submitted plan) - Reduce height by approximately 3m-the shown T1 on the submitted plan (Gleditsia tree) is not part of this proposal.

  Granted Trees 7 docs

• 179 French Street Sunbury-on-Thames TW16 5JY

  24/01204/TPO Submitted 10 Oct 2024 50 yards away

  TPO021SUN/66/T001 - 1 x Gleditsia (which replaced an Ash tree - shown as T1 on submitted map) - Crown lift to approximately 5m above the road. Cut back to maintain 1m clearance from phone lines. Cut back to provide 2m clearance from the neighbours roof and chimney.

  Granted Trees 7 docs

• 143 French Street Sunbury-on-Thames TW16 5JY

  25/01481/TPO Submitted 11 Dec 2025 100 yards away

  TPO080 T005 - Weeping Ash. Remove dead wood and thin crown by 25%. T008 - Lime. Thin crown by 25% and raise crown to 5m.

  Granted Trees 6 docs

• 26/00786/HOU Granted

  38 Knightsbridge Crescent Staines-upon-Thames TW18 2QR

  Single storey extension to existing garage following part demolition

  Received 27 Jul, published by the council 30 Jul 2026 Householder
• 26/00800/HOU Granted

  40 Fontmell Park Ashford TW15 2NW

  Erection of a part single storey / part first floor rear extension and alterations to the roof to provide habitable accommodation.

  Received 29 Jul, published by the council 31 Aug 2026 Householder
• 26/01137/HOU Awaiting decision

  23 Harfield Road Sunbury-on-Thames TW16 5PT

  Erection of a single storey rear extension, pergola, garage conversion into habitable space, first-floor front extension, and associated internal alterations.

  Received 29 Oct, published by the council 2 Nov 2026 Householder
• 26/00875/HOU Granted

  33 Kenyngton Drive Sunbury-on-Thames TW16 7RT

  Erection of a single storey side extension to form larger porch. Following removal of existing porch.

  Received 18 Aug, published by the council 24 Aug 2026 Householder
• 26/00927/HOU Decided

  10A Park Road Sunbury-on-Thames TW16 5BU

  Two storey side and rear extension and single storey rear extension including front and rear dormers

  Received 3 Sep, published by the council 14 Sep 2026 Householder