51 Napier Road, Isleworth, TW7 7HP

1. 10 Feb 2026

   Received by Hounslow

2. 7 Apr 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

• 39 Napier Road, Isleworth, TW7 7HP

  P/2025/3157 Submitted 20 Oct 2025 30m away

  Works to trees in a Conservation Area. Cherry (Prunus species) T1. Fell to ground level

  Granted Trees 4 docs

• 36 Napier Road, Isleworth, TW7 7HP

  P/2026/2418 Submitted 24 Aug 2026 31m away

  76% historically approved · decision due ~23 Oct

  Erection of a rear roof extension.

  Awaiting decision Householder Extension 17 docs
  Domestic

• 36 Napier Road, Isleworth, TW7 7HP

  P/2026/1897 Submitted 25 Jun 2026 31m away

  Certificate of lawfulness for the proposed erection of a rear roof extension.

  Granted Lawful development Extension 8 docs

• 40 Napier Road, Isleworth, TW7 7HP

  P/2026/1582 Submitted 27 May 2026 36m away

  Works to trees in a conservation area. T1 Olive. Reduce overhanging branches to No.48 Eve Road back towards the boundary, removing 2-3 limbs back to main stem, and removing approximately 2 metres of overhang. Final height is unchanged at 8m and final spread of 5m. T2 Crab Apple. Reduce any overhang to No.48 Eve Road back towards the boundary, cutting to suitable growth points, or back to main stem where appropriate. Final height is unchanged at 3m and final spread of 2.5m.

  Granted Trees 4 docs

• 60 DAWES AVENUE, ISLEWORTH, TW7 7JS

  P/2021/2038 Submitted 24 May 2021 45m away

  Removal of conditions 3 and 4 (restricting 'permitted development' rights) of planning permission 00337/60/P4 dated 07/06/2000 for the sub-division of existing dwelling house into one two-bedroom dwelling house and one one-bedroom dwellinghouse

  Refused Full applications 9 docs
  Domestic

• 65 DAWES AVENUE, ISLEWORTH, TW7 7JS

  P/2019/3957 Submitted 30 Oct 2019 63m away

  Certificate of Lawfulness for the erection of front porch and rear roof extension with juilete balcony and front roof windows to the house

  Refused Lawful development Extension Windows or glazing 11 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