45 CORNWALL GROVE, CHISWICK, LONDON, W4 2LB

1. 15 Jun 2021

   Received by Hounslow

2. 16 Aug 2021

   Decision issued: APPROVED

3. 16 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 16 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.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 43 Balfern Grove, Chiswick, London, W4 2JX

  P/2026/0206 Submitted 22 Jan 2026 50 yards away

  Erection of a single storey side infill extension and two new front roof windows to the house.

  Granted Householder Extension Windows or glazing 10 docs
  Small domestic

• 39 Balfern Grove, Chiswick, London, W4 2JX

  P/2026/0083 Submitted 12 Jan 2026 50 yards away

  Certificate of lawfulness proposed erection of a rear roof and outrigger extension, including a Juliet balcony and three front roof windows to the house.

  Granted Lawful development Extension Windows or glazing 7 docs

• FLAT FIRST FLOOR 33 BALFERN GROVE, CHISWICK, W4 2JX

  P/2019/3915 Submitted 29 Oct 2019 50 yards away

  Certificate of Lawfulness for erection of a rear roof extension to outrigger of first floor flat

  Refused Lawful development Extension 8 docs

• 55 And 55A Eastbury Grove Chiswick London W4 2JT

  P/2026/2584 Submitted 10 Sep 2026 50 yards away

  64% historically approved · decision due ~9 Nov

  Conversion of the existing two self contained flats to a single family house.

  Awaiting decision Full applications New dwelling 10 docs

• 55 Eastbury Grove, Chiswick, W4 2JT.

  P/2026/2135 Submitted 22 Jul 2026 50 yards away

  Certificate of lawfulness for the proposed conversion of flats to a house and erection of a Juliet balcony and sliding doors to the rear of the property.

  Granted Lawful development New dwelling 12 docs

• Flat Ground Floor, 28 Cornwall Grove, Chiswick, London, W4 2LB

  P/2026/0554 Submitted 16 Feb 2026 50 yards away

  Erection of a single storey rear extension to the ground floor flat.

  Granted Full applications Extension 10 docs
  Small domestic

• P/2026/2304 Granted

  18 Clifden Road, Brentford, TW8 0PF

  Erection of a side and rear extensions.

  Received 7 Aug, published by the council 12 Aug 2026 Householder
• P/2026/2804 Awaiting decision

  128 Durham Road, Feltham, TW14 0AE

  Erection of a detached outbuilding in the rear garden following demolition of existing shed.

  Received 2 Oct, published by the council 9 Oct 2026 Householder
• P/2026/2301 Granted

  4 Glebe Street, Chiswick, W4 2BG

  Erection of a front side and rear side infill extensions with alterations to the rear elevation, a rear side first floor infill extension with replacement of windows to the rear elevation and installation of new rooflights to the existing ground floor infill extension of the house

  Received 7 Aug, published by the council 16 Aug 2026 Householder
• P/2026/1167 Granted

  20 Firs Drive, Hounslow, TW5 9TD

  Erection of part one, part two-storey side extension following demolition of existing garage and part one, part two-storey rear extension. Raising of roof ridge, erection of rear roof extensions, and installation of one front roof window.

  Received 15 Apr, published by the council 26 Jul 2026 Householder
• P/2026/2025 Granted

  1 Kneller Gardens, Isleworth, TW7 7NP

  Erection of a single storey rear and first floor side extension incorporating the conversion of the existing garage to a habitable room

  Received 8 Jul, published by the council 26 Jul 2026 Householder