The Treaty Centre, High Street, Hounslow, TW3 1ES

1. 9 Oct 2025

   Received by Richmond upon Thames

2. 26 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 4 December 2025, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Richmond upon Thames took a median of 46 days over the applications it decided in the last year.

This application is with Richmond upon Thames for determination, against a statutory target of eight weeks. Over the last year Richmond upon Thames decided outline applications in a median of 48 days. More in our guide to how long planning decisions take.

An outline application tests the principle of developing a site, holding back details such as appearance and landscaping as reserved matters for later approval. More in our guide to planning application types.

• Phase 1a, Treaty Centre, 263-277 High Street, Hounslow, TW3 1ES

  P/2025/2643 Submitted 1 Sep 2025 50 yards away

  The partial retention of existing retail floorspace fronting the High Street (Class E) and associated access alterations and landscaping.

  Withdrawn Full applications 50 docs

• The Treaty Centre, High Street, Hounslow TW3 1ES

  P/2025/2650 Submitted 29 Aug 2025 50 yards away

  Hybrid application for the complete demolition of the Treaty Centre and associated multi-storey car park and severable phased redevelopment comprising: In full detail: Phase 1a, the partial retention of existing retail floorspace fronting the High Street (Use Class E) and associated access alterations and landscaping. In full detail: Phase 1, new Build-to-Rent (BTR) homes (Use Class C3) and associated private and communal amenity space, new public realm, flexible commercial floorspace (Use Class E), private and publicly accessible car parking spaces and other associated access alterations and landscaping. In Outline: Phase 2 new homes (Use Class C3) and associated private and communal amenity space, new public realm, cultural/community floorspace (Sui Generis and Use Class F), flexible commercial floorspace (Use Class E), and private and publicly accessible car parking spaces and other associated access alterations and landscaping. All matters are reserved, except access. In Outlin... read more

  Withdrawn Outline New dwelling Demolition 200 docs
  Major scheme

• The Treaty Centre High Street Hounslow TW3 1ES

  253881CONS Submitted 9 Oct 2025 50 yards away

  91% historically approved · decision due ~8 Dec

  Hybrid application for the complete demolition of the Treaty Centre and associated multi-storey car park and severable phased redevelopment comprising: In full detail: Phase 1a, the partial retention of existing retail floorspace fronting the High Street (Use Class E) and associated access alterations and landscaping. In full detail: Phase 1, new Build-to-Rent (BTR) homes (Use Class C3) and associated private and communal amenity space, new public realm, flexible commercial floorspace (Use Class E), private and publicly accessible car parking spaces and other associated access alterations and landscaping. In Outline: Phase 2 new homes (Use Class C3) and associated private and communal amenity space, new public realm, cultural/community floorspace (Sui Generis and Use Class F), flexible commercial floorspace (Use Class E), and private and publicly accessible car parking spaces and other associated access alterations and landscaping. All matters are reserved, except access. In Outline: Phase 3 new homes (Use Class C3) and associated private and communal amenity space, new public realm, flexible commercial floorspace (Use Class E), and private and publicly accessible car parking spaces and other associated access alterations and landscaping. All matters are reserved, except access. Building heights across the development will range from 1 to 25 storeys (Out of Borough)

  Awaiting decision Outline New dwelling Demolition

• The Treaty Centre High Street Hounslow TW3 1ES

  253881CONS Submitted 9 Oct 2025 50 yards away

  90% historically approved · decision due ~8 Dec

  Hybrid application for the complete demolition of the Treaty Centre and associated multi-storey car park and severable phased redevelopment comprising: In full detail: Phase 1a, the partial retention of existing retail floorspace fronting the High Street (Use Class E) and associated access alterations and landscaping. In full detail: Phase 1, new Build-to-Rent (BTR) homes (Use Class C3) and associated private and communal amenity space, new public realm, flexible commercial floorspace (Use Class E), private and publicly accessible car parking spaces and other associated access alterations and landscaping. In Outline: Phase 2 new homes (Use Class C3) and associated private and communal amenity space, new public realm, cultural/community floorspace (Sui Generis and Use Class F), flexible commercial floorspace (Use Class E), and private and publicly accessible car parking spaces and other associated access alterations and landscaping. All matters are reserved, except access. In Outline: Phase 3 new homes (Use Class C3) and associated private and communal amenity space, new public realm, flexible commercial floorspace (Use Class E), and private and publicly accessible car parking spaces and other associated access alterations and landscaping. All matters are reserved, except access. Building heights across the development will range from 1 to 25 storeys (Out of Borough)

  Awaiting decision Outline New dwelling Demolition

• UNIT 27 TREATY CENTRE HIGH STREET, HOUNSLOW, TW3 1ES

  P/2021/3278 Submitted 12 Aug 2021 50 yards away

  Non-material amendment application seeks to amend Condition 4 to allow Instant Managed Offices Ltd to facilitate the ground floor of Unit 27

  Withdrawn Amendments 4 docs

• 227 High Street, Hounslow, TW3 1DH

  P/2026/1409 Submitted 11 May 2026 50 yards away

  Retrospective application for the installation of one internally illuminated fascia sign and one internally illuminated projecting sign.

  Granted Advertising 7 docs

• PA26/2209 Withdrawn

  54, Richmond Road, Twickenham, TW1 3BE

  Change of use of the existing three-storey building to create a mixed-use development comprising: Ground floor: Retention within Use Class E (Commercial, Business and Service) for flexible commercial uses, including office, retail, or professional services. First and second floors: Change of use from commercial (Use Class E) to residential (Use Class C3) to provide two self-contained one-bedroom flats.

  Received 23 Jun, published by the council 30 Jul 2026 Outline
• PA26/3074 Awaiting decision

  COMO HOUSE WARWICK ROAD HAMPTON WICK KT1 4DW

  Change of use of the existing office building from Class E to Class C3, to create 3No. new dwellings

  Received 4 Sep, published by the council 8 Sep 2026 Outline
• PA26/3047 Awaiting decision

  2, Hurst Road, East Molesey, KT8 9AF

  Roof extension to provide rooms in the roofspace including side rooflights. (Elmbridge ref 2026/1939).

  Received 1 Sep, published by the council 8 Sep 2026 Outline
• 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.

  Received 19 Aug, published by the council 23 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.

  Received 25 Jun, published by the council 26 Jul 2026 Outline