88 Munster Avenue, Hounslow, TW4 5BJ

1. 23 Apr 2026

   Received by Hounslow

2. 29 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 16 Jun 2026

   Decision issued: GRANT

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.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 46 Crestwood Way, Hounslow, TW4 5EQ

  P/2025/2924 Submitted 29 Sep 2025 90m away

  Erection of a single storey rear extension to the house.

  Granted Householder Extension 6 docs
  Small domestic

• 8 CONNAUGHT AVENUE, HOUNSLOW, TW4 5BW

  P/2026/1858 Submitted 23 Jun 2026 96m away

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

  Granted Householder Extension Demolition 16 docs
  Small domestic

• 27 HEATHLANDS WAY, HOUNSLOW, TW4 5BU

  P/2021/1958 Submitted 18 May 2021 110m away

  Erection of a two storey side extension and repositioning the entrance of the house.

  Refused Householder Extension 11 docs
  Domestic

• 56 Munster Avenue, Hounslow, TW4 5BQ

  P/2024/2169 Submitted 3 Jul 2024 120m away

  Erection of a single storey rear extension to the house.

  Granted Householder Extension 8 docs
  Small domestic

• 9 Crestwood Way, Hounslow, TW4 5EQ

  PA/2026/1124 Submitted 10 Apr 2026 157m away

  Ground floor rear extension 4.00 metres deep, maximum height of 2.83 metres, 2.73 metres high to the eaves

  Granted Prior approval Extension 26 docs

• 9 Crestwood Way, Hounslow, TW4 5EQ

  P/2026/1577 Submitted 27 May 2026 157m away

  76% historically approved · decision due ~22 Jul

  Erection of a single-storey rear extension and the erection of a front porch.

  Awaiting decision Householder Extension 7 docs
  Small domestic

• 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