18 BASILDENE ROAD, HOUNSLOW, TW4 7LE

1. 7 Jul 2021

   Received by Hounslow

2. 11 Aug 2021

   Decision issued: PRIOR APPROVAL IS NOT REQUIRED

3. 16 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

• 12 Legrace Avenue, Hounslow, TW4 7RS

  P/2026/0887 Submitted 17 Mar 2026 64m away

  Erection of a two-storey side and part first, part single storey rear extension. Erection of a rear roof extension with hip to gable conversion and a Juliet balcony, four front roof windows, and a front porch to the house.

  Refused Householder Extension Loft or dormer +1 6 docs
  Small domestic

• 12 Legrace Avenue, Hounslow, TW4 7RS

  P/2026/2470 Submitted 28 Aug 2026 64m away

  76% historically approved · decision due ~23 Oct

  Erection of a two storey side extension, single storey rear extension and part first floor rear extension, together with a hip to gable roof extension, rear roof extension incorporating a Juliet balcony, and installation of four front roof windows to the house

  Awaiting decision Householder Extension Loft or dormer +1 4 docs
  Small domestic

• 12 Legrace Avenue, Hounslow, TW4 7RS

  PA/2025/3789 Submitted 22 Dec 2025 64m away

  Ground floor rear extension 6.00 metres deep, maximum height of 3.50 metres, 2.70 metres high to the eaves

  Granted Prior approval Extension 5 docs

• 12 Legrace Avenue, Hounslow, TW4 7RS

  P/2025/3790 Submitted 22 Dec 2025 64m away

  Certificate of lawfulness proposed for the erection of a hip to gable and rear roof extension with three front roof windows and Juliette balcony, a front porch and a single storey detached outbuilding in the rear garden of the house

  Granted Lawful development Extension Loft or dormer +1 5 docs
  Small domestic

• 17 Basildene Road, Hounslow, TW4 7LF

  PA/2026/1037 Submitted 30 Mar 2026 69m away

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

  Granted Prior approval Extension 6 docs

• 83 Francis Road, Hounslow, TW4 7JT

  P/2025/3405 Submitted 12 Nov 2025 88m away

  Conversion of the existing detached outbuilding to a self contained residential unit with associated private amenity space, car parking, cycle and refuse storage.

  Refused Full applications 9 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