28 ADDISON AVENUE, HOUNSLOW, TW3 4AP

1. 7 Jul 2021

   Received by Hounslow

2. 20 Aug 2021

   Decision issued: GRANTED (FULL PLANNING PERMISSION NOT REQUIRED)

3. 23 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 20 August 2021, 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.

• 6 Colwyn Crescent, Hounslow, TW3 4AW

  P/2026/0770 Submitted 6 Mar 2026 121m away

  Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and front roof windows. Erection of a detached single storey outbuilding to the rear of the house.

  Granted Lawful development Extension Loft or dormer +1 5 docs
  Small domestic

• 148 SPRING GROVE ROAD, HOUNSLOW, TW3 4BP

  P/2021/2461 Submitted 17 Jun 2021 123m away

  Creation of a vehicular access to the house

  Refused Householder 7 docs
  Domestic

• 10 Colwyn Crescent, Hounslow, TW3 4AW

  PA/2026/0567 Submitted 18 Feb 2026 126m away

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

  Granted Prior approval Extension 5 docs

• 33 TAUNTON AVENUE, HOUNSLOW, TW3 4AG

  P/2023/0835 Submitted 15 Mar 2023 133m away

  Erection of a single storey outbuilding to be used as a home office and garden room

  Granted Householder 9 docs
  Small domestic

• ANNEXE REAR OF 75 SPRING GROVE ROAD, HOUNSLOW, TW3 4BD

  P/2023/0569 Submitted 21 Feb 2023 133m away

  Certificate of lawfulness for the exisiting use of the detached outbuilding as a self-contained unit for more than four years

  Granted Lawful development 19 docs

• 71 SPRING GROVE ROAD, HOUNSLOW, TW3 4BD

  PA/2021/2929 Submitted 19 Jul 2021 158m away

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

  Granted Prior approval Extension 7 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