173, 173A and 173B Martindale Road, Hounslow, TW4 7EZ

1. 10 Apr 2026

   Received by Hounslow

2. 22 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 15 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

• 171A Martindale Road, Hounslow, TW4 7EZ

  P/2024/2836 Submitted 23 Aug 2024 9m away

  Creation of a pitched roof with erection of a rear roof extension with two new front roof lights & two new windows to side elevation

  Granted Householder Extension Loft or dormer +1 8 docs
  Domestic

• Hounslow Heath School, Martindale Road, Hounslow, TW4 7HE

  P/2025/3517 Submitted 21 Nov 2025 69m away

  Retrospective application for the creation of a vehicular access with the erection of two gates

  Granted Full applications 9 docs

• 126 MARTINDALE ROAD, HOUNSLOW, TW4 7HE

  P/2021/2159 Submitted 1 Jun 2021 138m away

  Certificate of Lawfulness for the erection of a front porch to the house

  Refused Lawful development Extension 6 docs
  Small domestic

• 117 Martindale Road, Hounslow, TW4 7EZ

  P/2026/0087 Submitted 12 Jan 2026 141m away

  Erection of a single storey detached outbuilding for use as a gym, games room and storage in the rear garden.

  Granted Householder 10 docs
  Small domestic

• 89 MARTINDALE ROAD, HOUNSLOW, TW4 7EZ

  P/2022/2903 Submitted 12 Sep 2022 205m away

  Details of conditions 7c (Standard Assessment), 7d (zero carbon), 9 (hard and soft landscaping), 11 (schedule of fittings and manufacturers' literature), 12 (cycle parking), 13 (waste and recycled materials) and 14(closest car parking space to the house removed) submitted pursuant of planning permission 00745/H/P3 dated 28/01/2019 for erection of a two storey three bedroom dwelling with associated car park space, cycle spaces and amenity space.

  Granted Conditions 12 docs
  Domestic

• Cavalry Barracks,Beavers Lane,Hounslow,TW4 6HD

  P/2026/0799 Submitted 10 Mar 2026 214m away

  Non material amendment to amend the triggers to a series of conditions to enable minor demolition to take place following permission 00092/A/P20 - P/2021/0920 dated 18/05/2023 for Hybrid Planning Application to develop the Cavalry Barracks Site in phases to include full application for: 765 residential units (C3 Use), 1,652 sqm (GIA) non-residential floorspace (Use Classes E and F), demolition of some buildings and structures; retention, conversion and re-use of some statutory and locally listed buildings, new and modified access, car parking, public space and sports pitches, landscaping and associated works; and an outline application with all matters reserved except access for: up to 760 residential dwellings (C3 Use), up to 1,021 sqm (GIA) non-residential floorspace (Use Classes E and F), car parking, public open space and sports pitches; landscaping; car parking; and other associated and ancillary works

  Granted Amendments Demolition 3 docs

• 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