133, Argyle Avenue, Hounslow, TW3 2LL

1. 15 Apr 2026

   Received by Richmond upon Thames

2. 8 Jun 2026

   Decision issued: Raise No objection

3. 13 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.

An outline application tests the principle of developing a site before the detail is worked up. Some or all of the particulars, such as appearance, layout, scale, access and landscaping, are held back as reserved matters for later approval. Permission at outline stage does not by itself allow building to start; the reserved matters must be approved first.

More on outline applications in our guide

• 51 Park Avenue, Hounslow, TW3 2LY

  P/2026/0058 Submitted 9 Jan 2026 51m away

  100% historically approved · decision due ~6 Mar

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

  Awaiting decision Lawful development Extension Loft or dormer +1 8 docs

• 80 ARGYLE AVENUE, HOUNSLOW, TW3 2LN

  PA/2023/0680 Submitted 2 Mar 2023 87m away

  Ground floor rear extension 6.00 metres deep, maximum height 2.95 metres, 2.95 metres high to the eaves

  Granted Prior approval Extension 6 docs

• 76 Argyle Avenue, Hounslow, TW3 2LN

  P/2026/1490 Submitted 18 May 2026 102m away

  Certificate of Lawfulness for the proposed erection of a rear roof extension, including a hip-to-gable roof conversion and installation of three front roof windows, erection of a front porch, and erection of a single-storey detached outbuilding in the rear garden.

  Granted Lawful development Extension Loft or dormer +1 11 docs
  Small domestic

• 76 Argyle Avenue, Hounslow, TW3 2LN

  PA/2026/1491 Submitted 18 May 2026 102m away

  Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.82 metres high to the eaves

  Granted Prior approval Extension 4 docs

• 76 Argyle Avenue, Hounslow, TW3 2LN

  P/2026/2400 Submitted 19 Aug 2026 102m away

  76% historically approved · decision due ~29 Oct

  Erection of a two storey side and rear extension.

  Awaiting decision Householder Extension 7 docs
  Domestic

• 131 Argyle Avenue, Hounslow, TW3 2LL

  P/2026/0113 Submitted 14 Jan 2026 110m away

  Certificate of lawfulness for the proposed erection of a rear roof extension with front roof windows, a front porch, and a single storey detached outbuilding to the rear of the house.

  Granted Lawful development Extension Windows or glazing 14 docs
  Small domestic

• PA26/2881 Awaiting decision

  1-3, Sussex Place, London, W6 9EA

  Demolition of existing building and redevelopment of the site comprising the erection of a 14-storey (plus basement) building to provide purpose built student accommodation, comprising of 291 student bedrooms; associated communal facilities, roof terrace, cycle parking, refuse storage and landscaping.

  19 Aug 2026 Outline
• PA26/2257 Refused

  83-105 Ham Street, Ham, TW10 7HL

  Application for prior notification of development for a single-storey rooftop extension above the detached flatted building to provide residential flats.

  25 Jun 2026 Outline
• PA26/2838 Awaiting decision

  Unit 18, Falstaff House, Bardolph Road, London, TW9 2LE

  Application for determination for Prior Approval for change of use of office floorspace (Class E) to provide 1 residential flat (Class C3).

  14 Aug 2026 Outline
• PA26/2290 Refused

  20, Church Street, Twickenham, TW1 3NJ

  Installation of 12 PV solar panels on the existing roof

  30 Jun 2026 Outline
• PA26/2786 Awaiting decision

  29 30, Fourth Cross Road, Twickenham, TW2 5EL

  Conversion of Class E unit into a single dwelling.

  11 Aug 2026 Outline