12 Letchworth Avenue, Feltham, TW14 9RY

This site has had 3 applications since 2021: 0 approved, 1 refused.

• P/2026/2619 Withdrawn

  12 Letchworth Avenue, Feltham, TW14 9RY

  Erection of a single storey rear extension.

  Submitted 14 Sep 2026 Householder
• P/2021/3195 Refused

  12 LETCHWORTH AVENUE, FELTHAM, TW14 9RY

  Demolition of existing garage and erection of a single storey side and front extension.

  Decided 30 Sep 2021 Householder

1. 24 Sep 2026

   Received by Hounslow

2. 27 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 19 November 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 56 days over the applications it decided in the last year.

This application is with Hounslow for determination, against a statutory target of eight weeks. Over the last year Hounslow decided prior approval applications in a median of 39 days. More in our guide to how long planning decisions take.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 12 Letchworth Avenue, Feltham, TW14 9RY

  P/2026/2619 Submitted 14 Sep 2026 50 yards away

  Erection of a single storey rear extension.

  Withdrawn Householder Extension 11 docs
  Small domestic

• 12 LETCHWORTH AVENUE, FELTHAM, TW14 9RY

  P/2021/3195 Submitted 5 Aug 2021 50 yards away

  Demolition of existing garage and erection of a single storey side and front extension.

  Refused Householder Extension Demolition 10 docs
  Small domestic

• 14 Letchworth Avenue, Feltham, TW14 9RY

  PA/2026/2329 Submitted 12 Aug 2026 50 yards away

  Ground floor rear extension 6.00 metres deep, maximum height of 2.98 metres, 2.90 metres high to the eaves

  Granted Prior approval Extension 6 docs

• 4 Letchworth Avenue, Feltham, TW14 9RY

  P/2024/3425 Submitted 12 Oct 2024 50 yards away

  Certificate of Lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and front roof windows and a front porch extension.

  Granted Lawful development Extension Loft or dormer +1 6 docs
  Small domestic

• 4 Letchworth Avenue, Feltham, TW14 9RY

  P/2024/3423 Submitted 12 Oct 2024 50 yards away

  Erection of a two storey rear extension to the house.

  Refused Householder Extension 8 docs
  Domestic

• 4 Letchworth Avenue, Feltham, TW14 9RY

  PA/2024/3424 Submitted 14 Oct 2024 50 yards away

  Ground floor rear extension 6.00 metres deep, maximum height of 2.91 metres, 2.91 metres high to the eaves

  Granted Prior approval Extension 7 docs

• PA/2026/2437 Refused

  17 Orchard Road, Brentford, TW8 0QX

  Ground floor rear extension 5.51 metres deep, maximum height of 2.80 metres, 2.06 metres high to the eaves

  Received 26 Aug, published by the council 2 Sep 2026 Prior approval
• PA/2026/2481 Refused

  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

  Received 1 Sep, published by the council 5 Sep 2026 Prior approval
• PA/2026/2768 Awaiting decision

  86 Kneller Gardens, Isleworth, TW7 7NW

  Ground floor rear extension 4.50 metres, maximum height 3.20 metres, 2.70 metres high to the eaves.

  Received 30 Sep, published by the council 6 Oct 2026 Prior approval
• PA/2026/2393 Granted

  2 Letchworth Avenue, Feltham, TW14 9RY

  Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.85 metres high to the eaves

  Received 18 Aug, published by the council 23 Aug 2026 Prior approval
• PA/2026/2364 Granted

  9 Westbourne Road, Feltham, TW13 4LX

  Ground floor rear extension 4.5 metres deep, maximum height of 2.8 metres, 2.8 metres high to the eaves

  Received 13 Aug, published by the council 23 Aug 2026 Prior approval