PA/2026/1784

1. 16 Jun 2026

   Received by Hounslow

2. 15 Jul 2026

   Decision issued: PRIOR APPROVAL IS NOT REQUIRED

3. 26 Jul 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

• P/2021/2208 Granted

  14 SIDMOUTH AVENUE, ISLEWORTH, TW7 4DW

  Certificate of Lawfulness for proposed erection of a rear roof extension incorporating hip to gable conversion and two front roof windows; Alterations to the existing ground floor rear extension comprising of the removal of the existing opens and installation of one new window and French doors to the house

  3 Jun 2021 12m away Lawful development
• P/2026/2069 Awaiting decision

  12 Crawford Close, Isleworth, TW7 4DP

  Non material amendment to allow the increase of the width of the single storey side extension from 0.8m to 1.35m of planning permission P/2024/1156 approved 18/06/2024 for the erection of single storey rear, single storey side and part first floor rear extension to the house

  15 Jul 2026 50m away Amendments
• PA/2023/0610 Granted

  7 SIDMOUTH AVENUE, ISLEWORTH, TW7 4DW

  Ground floor rear extension 4.00 metres deep, maximum height 3.54 metres, 3.00 metres high to the eaves

  23 Feb 2023 57m away Prior approval
• P/2024/3245 Granted

  65 Sidmouth Avenue, Isleworth, TW7 4DR

  Certificate of Lawfulness for the proposed change of use from Use Class C3(a) to Use Class C3(b).

  27 Sep 2024 81m away Lawful development
• P/2024/3461 Granted

  47 Sidmouth Avenue, Isleworth, TW7 4DR

  Certificate of Lawfulness for the proposed erection of a single storey rear extension to the house.

  16 Oct 2024 137m away Lawful development
• P/2026/1361 Awaiting decision

  Land on London Road to the side of Grove House, 76 Sidmouth Avenue, Isleworth, TW7 4FQ

  Installation of one telecommunication Street Hub and removal of associated payphones.

  9 Apr 2026 138m away Full applications

• PA/2026/2235 Awaiting decision

  209 Hatton Road, Feltham, TW14 9QY

  Ground floor rear extension 5.00 metres deep, maximum height 3.60 metres, 3.00 metres high to the eaves.

  31 Jul 2026 Prior approval
• PA/2026/2232 Awaiting decision

  9 Wareham Close, Hounslow, TW3 3PX

  Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 2.80 metres high to the eaves.

  31 Jul 2026 Prior approval
• PA/2026/2187 Awaiting decision

  205 Brabazon Road, Hounslow, TW5 9LW

  Ground floor rear extension 6.00 metres deep, maximum height of 3.40 metres, 2.90 metres high to the eaves

  28 Jul 2026 Prior approval
• PA/2026/2172 Awaiting decision

  65 Mornington Crescent, Hounslow, TW5 9ST

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

  27 Jul 2026 Prior approval
• PA/2026/1749 Refused

  25 Grosvenor Road, Hounslow, TW3 3ER

  Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 2.90 metres high to the eaves.

  12 Jun 2026 Prior approval