89 Devonshire Road, Chiswick, London, W4 2HU

1. 24 Oct 2025

   Received by Hounslow

2. 24 Mar 2026

   Decision issued: APPROVED

3. 12 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 94 DEVONSHIRE ROAD, CHISWICK, LONDON, W4 2HS

  P/2019/4568 Submitted 10 Dec 2019 39m away

  Conversion of two flats into a single family dwelling

  Withdrawn Full applications New dwelling 7 docs
  Several homes

• 80 DALE STREET, CHISWICK, LONDON, W4 2BZ

  P/2021/2429 Submitted 11 Jun 2021 42m away

  Erection of a single storey rear infill extension.

  Granted Householder Extension 5 docs
  Small domestic

• 98 Devonshire Road,Chiswick,W4 2HS

  P/2026/2006 Submitted 7 Jul 2026 48m away

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

  Granted Lawful development Extension Windows or glazing 6 docs

• 98 Devonshire Road, Chiswick, London, W4 2HS

  P/2026/1412 Submitted 11 May 2026 48m away

  Erection of a rear roof extension and rear outrigger extension, including a hip-to-gable roof alteration and installation of two front roof windows to the house.

  Refused Householder Extension Loft or dormer +1 8 docs
  Domestic

• 2 BAKERS YARD OAK LOCK MEWS FRASER STREET, CHISWICK, LONDON, W4 2DS

  P/2021/2234 Submitted 4 Jun 2021 48m away

  Variation of conditions 2 (approved plans) and 6 (windows) and removal of condition 7 (obscure glazing) to allow retrospectively for changes to the first floor windows facing Oak Lock Mews, of 02901/C2/P1 approved 09/02/2016 for erection of a two storey house following the demolition of the existing single storey office building.

  Granted Full applications Demolition Windows or glazing 13 docs
  Small domestic

• 66 Devonshire Road, Chiswick, W4 2HT

  P/2026/0886 Submitted 17 Mar 2026 74m away

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

  Granted Lawful development Extension Windows or glazing 5 docs

• P/2026/2047 Granted

  9 Borough Road, Isleworth, TW7 5DY

  Erection of a single storey rear extension.

  10 Jul 2026 Householder
• P/2026/1858 Granted

  8 CONNAUGHT AVENUE, HOUNSLOW, TW4 5BW

  Erection of single storey front extension to the outbuilding for used as storage, office and a Gym. Following part demolition of the outbuilding.

  23 Jun 2026 Householder
• P/2026/2503 Awaiting decision

  25 Arnold Crescent, Isleworth, TW7 7NS

  Erection of a single storey rear, two storey side extension, and rear roof extension with two front roof windows to the house.

  3 Sep 2026 Householder
• P/2026/1522 Granted

  4 Camborne Way, Hounslow, TW5 0PW

  Erection of a single storey rear extension and reduction in width of the existing side and rear extension.

  20 May 2026 Householder
• P/2026/2024 Granted

  20 Hartland Road, Isleworth, TW7 6RH

  Erection of a rear roof extension with windows to the front of the house.

  8 Jul 2026 Householder