16 Downs View, Isleworth, TW7 5HF

1. 30 Sep 2025

   Received by Hounslow

2. 10 Oct 2025

   Validated

   Checked as complete and ready for consideration.

3. 5 Dec 2025

   Decision issued: APPROVED

4. 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

• 16 Downs View, Isleworth, TW7 5HF

  P/2025/3732 Submitted 16 Dec 2025 0m away

  Erection of a rear roof extension with hip to gable conversion and front roof windows to the house.

  Refused Householder Extension Loft or dormer +1 10 docs
  Domestic

• 16 Downs View, Isleworth, TW7 5HF

  P/2025/2940 Submitted 30 Sep 2025 0m away

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

  Granted Lawful development Extension Loft or dormer +1 10 docs

• 41 NORTHUMBERLAND AVENUE, ISLEWORTH, TW7 5HZ

  P/2019/3927 Submitted 29 Oct 2019 57m away

  Conversion of existing store into a habitable room and replacement of up and over door with new windows

  Granted Householder Windows or glazing 6 docs
  Domestic

• 6 Roxborough Avenue, Isleworth, TW7 5HG

  P/2026/1070 Submitted 1 Apr 2026 62m away

  Erection of a part first floor rear extension to the house.

  Granted Householder Extension 13 docs
  Domestic

• 23 Downs View, Isleworth, TW7 5HF

  P/2024/3516 Submitted 22 Oct 2024 72m away

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

  Granted Lawful development Extension Loft or dormer +1 7 docs

• 23 Downs View, Isleworth, TW7 5HF

  P/2025/2500 Submitted 12 Aug 2025 72m away

  Erection of a single storey ground floor side extension and part rear infill extension to the house. Following the demolition of the garage.

  Withdrawn Householder Extension Demolition 6 docs
  Small domestic

• 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