3 Welwyn Avenue, Feltham, TW14 9SJ

1. 18 Mar 2026

   Received by Hounslow

2. 27 Apr 2026

   Decision issued: PRIOR APPROVAL IS NOT REQUIRED

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.

Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.

More on prior approval applications in our guide

• 3 Welwyn Avenue, Feltham, TW14 9SJ

  P/2026/1815 Submitted 18 Jun 2026 0m away

  76% historically approved · decision due ~8 Sep

  Erection of a single storey side and part rear extension.

  Awaiting decision Householder Extension 5 docs
  Small domestic

• 1 Welwyn Avenue, Feltham, TW14 9SJ

  PA/2024/3584 Submitted 29 Oct 2024 3m away

  Ground floor rear extension 5.285 metres deep, maximum height of 2.90 metres, 2.90 metres high to the eaves

  Granted Prior approval Extension 10 docs

• 49 Longford Avenue, Feltham, TW14 9TH

  P/2025/3108 Submitted 15 Oct 2025 38m away

  Variation of condition 2 (approved plans) to increase the roof height, introduce a flush rooflight above the bathroom, add one obscured side window and change all external windows and doors to Anthracite Grey of planning permission P/2025/0061 approved 10/06/2025 for the Erection of a single storey detached outbuilding for ancillary use to the main house.

  Granted Conditions Loft or dormer Windows or glazing 5 docs
  Small domestic

• 48 Longford Avenue, Feltham, TW14 9TG

  P/2026/0508 Submitted 11 Feb 2026 55m away

  Demolition of existing conservatory and erection of a single storey rear extension to the house.

  Granted Householder Extension Demolition 8 docs
  Small domestic

• 17 Welwyn Avenue, Feltham, TW14 9SJ

  P/2026/1226 Submitted 20 Apr 2026 62m away

  Conversion of the existing garage into a habitable room and erection of a front porch extension to the house.

  Granted Householder Extension 6 docs
  Small domestic

• 26 LONGFORD AVENUE, FELTHAM, TW14 9TG

  PA/2021/3145 Submitted 2 Aug 2021 88m away

  Ground floor rear extension 6 metres deep, maximum height of 3.6 metres, 2.6 metres high to the eaves

  Granted Prior approval Extension 7 docs

• PA/2026/2167 Granted

  2 Church Walk, Brentford, TW8 8DB

  Ground floor rear extension 4.50 metres deep, maximum height 4.00 metres, 3.00 metres high to the eaves.

  24 Jul 2026 Prior approval
• PA/2026/2475 Awaiting decision

  4 Upton Road, Hounslow, TW3 3HP

  GS868133219 - Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 3.00 metres high to the eaves

  1 Sep 2026 Prior approval
• PA/2026/2481 Awaiting decision

  6 Speart Lane, Hounslow, TW5 9EF

  Ground floor rear extension 8.00 metres deep, maximum height of 3.00 metres, 2.80 metres high to the eaves

  1 Sep 2026 Prior approval
• PA/2026/2458 Awaiting decision

  82 Ringway, Southall, UB2 5SU

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

  28 Aug 2026 Prior approval
• PA/2026/2461 Awaiting decision

  24 Kingston Avenue, Feltham, TW14 9SL

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

  28 Aug 2026 Prior approval