320B Great West Road, Hounslow, TW5 0BA

This site has had 3 applications since 2025: 3 approved, 0 refused.

• P/2025/3445 Granted

  320B Great West Road, Hounslow, TW5 0BA

  Certificate of lawfulness proposed for a hip to gable roof conversion to both sides with a rear roof extension and two front roof windows; and the erection of single storey side extensions to the house.

  Decided 6 Feb 2026 Lawful development
• PA/2025/3442 Granted

  320B Great West Road, Hounslow, TW5 0BA

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

  Decided 23 Dec 2025 Prior approval

1. 4 Jun 2026

   Received by Hounslow

2. 9 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 26 Jul 2026

   Added to PlanIndex

4. 4 Aug 2026

   Decision issued: LAWFNOTGRANT

Hounslow granted permission on 4 August 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 320B Great West Road, Hounslow, TW5 0BA

  P/2025/3445 Submitted 17 Nov 2025 50 yards away

  Certificate of lawfulness proposed for a hip to gable roof conversion to both sides with a rear roof extension and two front roof windows; and the erection of single storey side extensions to the house.

  Granted Lawful development Extension Loft or dormer +1 22 docs
  Small domestic

• 320B Great West Road, Hounslow, TW5 0BA

  PA/2025/3442 Submitted 17 Nov 2025 50 yards away

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

  Granted Prior approval Extension 12 docs

• 17 Sutton Square, Hounslow, TW5 0JB

  P/2026/1419 Submitted 11 May 2026 100 yards away

  Erection of a two-storey side extension and a part single-storey, part two-storey rear extension.

  Granted Householder Extension 8 docs
  Small domestic

• 17 Sutton Square, Hounslow, TW5 0JB

  PA/2026/0149 Submitted 16 Jan 2026 100 yards away

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

  Granted Prior approval Extension 5 docs

• 17 Sutton Square, Hounslow, TW5 0JB

  P/2026/0150 Submitted 16 Jan 2026 100 yards away

  Certificate of lawfulness for the proposed erection of a detached single storey outbuilding to the rear of the house

  Granted Lawful development 6 docs
  Small domestic

• 7 SUTTON SQUARE, HOUNSLOW, TW5 0JB

  P/2019/3898 Submitted 28 Oct 2019 100 yards away

  Erection of an outbuilding for storage and use as a gym

  Granted Full applications 7 docs

• P/2026/2118 Granted

  54 Amhurst Gardens, Isleworth, TW7 6AJ

  Certificate of lawfulness for the proposed erection of a rear roof extension with front roof windows.

  Received 20 Jul, published by the council 26 Jul 2026 Lawful development
• P/2026/2580 Awaiting decision

  50B Paxton Road, Chiswick, London, W4 2QX

  Certificate of lawfulness for the existing use of a first floor self contained flat.

  Received 10 Sep, published by the council 17 Sep 2026 Lawful development
• P/2026/2332 Granted

  43 Dawes Avenue, Isleworth, TW7 7JS

  Certificate of Lawfulness for the proposed hip to gable conversion, front roof lights and erection of a rear roof extension to the house.

  Received 12 Aug, published by the council 16 Aug 2026 Lawful development
• P/2026/2089 Granted

  18 Central Avenue, Hounslow, TW3 2QH

  Certificate of lawfulness for the existing use of the rear extension as a self contained flat.

  Received 17 Jul, published by the council 26 Jul 2026 Lawful development
• P/2026/2566 Awaiting decision

  109 Wood Lane, Isleworth, TW7 5EG

  Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion with roof windows to the front and Juliet balcony to the rear of the house.

  Received 9 Sep, published by the council 17 Sep 2026 Lawful development