174A Cromwell Road, Hounslow, TW3 3QS

1. 4 Nov 2024

   Received by Hounslow

2. 19 Dec 2024

   Decision issued: PRIOR APPROVAL IS NOT REQUIRED

3. 2 Sep 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

• 241 Cromwell Road,Hounslow,TW3 3QT

  P/2024/3583 Submitted 24 Oct 2024 35m away

  Erection of a detached outbuilding in the rear garden to be used as a granny annexe.

  Refused Full applications 9 docs

• 237 Cromwell Road, Hounslow, TW3 3QT

  P/2025/2671 Submitted 3 Sep 2025 37m away

  Non Material Amendment to change the roofing material of the approved raised roof of permission P/2024/4173 dated 12/03/2025 for Erection of replacement roof with increase in height to the existing conservatory to allow conversion into sitting room to the house

  Granted Amendments Extension Roofing 6 docs

• 247 Cromwell Road, Hounslow, TW3 3QT

  P/2025/3322 Submitted 5 Nov 2025 39m away

  Certificate of lawfulness proposed for the erection of a rear roof and outrigger extension with two front roof windows and a single storey infill and rear extension to the house.

  Granted Lawful development Extension Windows or glazing 4 docs
  Small domestic

• 406 Hanworth Road, Hounslow, TW3 3SN

  P/2026/1888 Submitted 25 Jun 2026 98m away

  65% historically approved · decision due ~24 Sep

  Erection of a first floor part rear extension to allow the conversion of the house into two self contained flats, and installation of solar panels to the front roof, with associated landscaping, bin and bike stores.

  Awaiting decision Full applications New dwelling Extension 12 docs

• 207 CROMWELL ROAD, HOUNSLOW, TW3 3QW

  PA/2023/0830 Submitted 14 Mar 2023 114m away

  Ground floor rear extension 5.00 metres deep, maximum height 3.00 metres, 3.00 metres high to the eaves

  Granted Prior approval Extension 9 docs

• 12 PENDEREL ROAD, HOUNSLOW, TW3 3QR

  PA/2021/2894 Submitted 15 Jul 2021 151m away

  Ground floor extension 6.00 metres deep, maximum height 3.7 metres, 3.00 metres high to the eaves

  Granted Prior approval Extension 8 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