28 Penwerris Avenue, Isleworth, TW7 4QX

This site has had 2 applications since 2025: 2 approved, 0 refused.

• P/2026/1876 Granted

  28 Penwerris Avenue, Isleworth, TW7 4QX

  Erection of two storey side and single storey and part first floor rear extension with conversion of the garage into habitable room and replacement of the garage doors with a window to the house.

  Decided 21 Aug 2026 Householder

1. 30 Sep 2025

   Received by Hounslow

2. 15 Oct 2025

   Decision issued: GRANT

3. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 15 October 2025, 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.

• 28 Penwerris Avenue, Isleworth, TW7 4QX

  P/2026/1876 Submitted 24 Jun 2026 50 yards away

  Erection of two storey side and single storey and part first floor rear extension with conversion of the garage into habitable room and replacement of the garage doors with a window to the house.

  Granted Householder Extension Windows or glazing 8 docs
  Small domestic

• 29 Penwerris Avenue, Isleworth, TW7 4QT

  P/2026/1345 Submitted 5 May 2026 50 yards away

  Erection of a hip to gable to both sides and a rear roof extension with three front roof windows to the house

  Withdrawn Householder Extension Loft or dormer +1 6 docs
  Domestic

• 29 Pevensey Close, Isleworth, TW7 4QS

  P/2025/3245 Submitted 27 Oct 2025 50 yards away

  Certificate of lawfulness for the proposed erection of a single storey rear extension.

  Granted Lawful development Extension 12 docs
  Small domestic

• 12 PENWERRIS AVENUE, ISLEWORTH, TW7 4QX

  P/2021/1613 Submitted 26 Apr 2021 100 yards away

  Retrospective planning application for the erection of a single storey side extension and increase in the height of the parapet on the boundaries

  Granted Householder Extension 7 docs
  Small domestic

• 23 Penwerris Avenue, Isleworth, TW7 4QT

  P/2025/3390 Submitted 11 Nov 2025 100 yards away

  Retrospective application for the erection of a single-storey rear extension to the house. Removal of the rear canopy from the single storey rear extension.

  Granted Householder Extension 13 docs
  Small domestic

• 11 PENWERRIS AVENUE, ISLEWORTH, TW7 4QT

  P/2021/2269 Submitted 7 Jun 2021 150 yards away

  Erection of single storey side and rear extension following the demolition of existing garage.

  Granted Householder Extension Demolition 17 docs
  Small domestic

• P/2026/2813 Awaiting decision

  150 Wood Lane, Isleworth, TW7 5EQ

  (GSGS877009741) Certificate of lawfulness proposed for the erection of a single storey outbuilding to be used as a home gym / playroom / shed in the rear garden of the house

  Received 5 Oct, published by the council 9 Oct 2026 Lawful development
• P/2026/2334 Granted

  69 Central Avenue, Hounslow, TW3 2QW

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

  Received 12 Aug, published by the council 16 Aug 2026 Lawful development
• P/2026/2459 Granted

  2 Letchworth Avenue, Feltham, TW14 9RY

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

  Received 28 Aug, published by the council 5 Sep 2026 Lawful development
• P/2026/2787 Awaiting decision

  13 Denbigh Road, Hounslow, TW3 4DU

  Certificate of Lawfulness for the proposed erection of a detached outbuilding in the rear garden.

  Received 1 Oct, published by the council 9 Oct 2026 Lawful development
• P/2026/2790 Awaiting decision

  14 Old Farm Close, Hounslow, TW4 7AB

  Certificate of lawfulness for the proposed erection of a rear roof extension and two front roof windows to the house.

  Received 1 Oct, published by the council 6 Oct 2026 Lawful development