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 0m 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 51m 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  Withdrawn Householder Extension Loft or dormer +1 6 docs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 61m away

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

  Granted Lawful development Extension 12 docs
  Small domestic

• 23 Penwerris Avenue, Isleworth, TW7 4QT

  P/2025/3390 Submitted 11 Nov 2025 73m 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 122m away

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

  Granted Householder Extension Demolition 17 docs
  Small domestic

• 18 Cranmore Avenue, Isleworth, TW7 4QW

  PA/2024/3490 Submitted 19 Oct 2024 133m away

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

  Granted Prior approval Extension 6 docs

• P/2026/2033 Granted

  3 Benedict Drive, Feltham, TW14 8JH

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

  8 Jul 2026 Lawful development
• P/2026/2027 Granted

  115 Northumberland Crescent, Feltham, TW14 9SP

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

  8 Jul 2026 Lawful development
• P/2026/2009 Granted

  3 Brainton Avenue, Feltham, TW14 0AZ

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

  7 Jul 2026 Lawful development
• P/2026/2014 Granted

  82 Sussex Avenue, Isleworth, TW7 6LB

  Certificate of lawfulness for the proposed erection of a rear roof extension, a porch to the front of the house, and a front roof window.

  7 Jul 2026 Lawful development
• P/2026/2473 Awaiting decision

  16 Somerset Waye, Hounslow, TW5 9HG

  Certificate of lawfulness for the proposed erection of a rear roof extension with two roof windows to the front and alterations to the existing side roof from flat roof to pitched roof.

  1 Sep 2026 Lawful development