Thames Works, Church Street, Chiswick, London, W4 2PD

1. 20 Oct 2025

   Received by Hounslow

2. 27 Oct 2025

   Validated

   Checked as complete and ready for consideration.

3. 16 Dec 2025

   Decision issued: APPROVED

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 full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

• Thames Works, Church Street, Chiswick, London, W4 2PD

  P/2026/1750 Submitted 12 Jun 2026 0m away

  Non material amendment to allow the re-wording of condition 2 (approved plans) to update the approved plan list and to amendment the description of development to External alterations to the existing building including amendments to existing openings and associated works to elevations of planning permission P/2025/3155

  Granted Amendments 7 docs

• Thames Works, Church Street, Chiswick, London, W4 2PD

  PA/2026/1927 Submitted 29 Jun 2026 0m away

  Prior approval for the installation of 14 roof mounted solar photovoltaic (PV) panels to the existing pitched roof on the buildings Northwest elevation.

  Granted Outline 8 docs

• Thames Works, Church Street, Chiswick, London, W4 2PD

  P/2025/0155 Submitted 17 Jan 2025 0m away

  Erection of a part second floor extension and conversion of the second floor from office use (Class E) to a House of Multiple Occupation for up to 5 people (Class C4)

  Withdrawn Full applications Extension 21 docs

• Flat 5 The Barley Store, Lamb Brewery Studios Church Street, Chiswick, London, W4 2PD

  P/2026/0350 Submitted 4 Feb 2026 19m away

  Replacing the existing single glazed window to double glazed window to the rear elevation of flat 5.

  Granted Full applications Windows or glazing 13 docs

• Thames Works, Unit 1, Church Street, Chiswick W4 2PD

  PAC/2025/3146 Submitted 20 Oct 2025 20m away

  Prior Approval for the change of use of the existing offices (Class E) into residential use (Class C3) compromising of three self contained flats with associated cycle and refuse storage.

  Granted Outline New dwelling 12 docs

• Second Floor Flat, Thames Works, Church Street, Chiswick, London,W4 2PD

  P/2025/3456 Submitted 17 Nov 2025 20m away

  Certificate of lawfulness proposed for change within Class C3 from dwellinghouse (C3a) to supported housing (C3b) for up to five People.

  Granted Lawful development 8 docs
  Domestic

• P/2026/1189 Granted

  12 The Grove, Isleworth, TW7 4JZ

  Installation of one front boundary gate and new windows to allow the conversion of existing single family house to five self contained flats with associated refuse and cycle storage.

  17 Apr 2026 Full applications
• P/2026/1937 Granted

  Flat Ground Floor, 102 New Heston Road, Hounslow, TW5 0LF

  Erection of a single storey detached outbuilding for use as a home office in the rear garden of the flat

  30 Jun 2026 Full applications
• P/2026/1494 Granted

  2 Bath Road, Chiswick, London, W4 1LW

  Demolition of the single-storey rear extension, installation of temporary scaffolding to the façade of the building, installation of associated plant equipment, an external condenser unit and acoustic shelter. Internal layout alterations and installation of secondary glazing, external alterations including re-rendering to allow continued use under Class E (c) and (g)(i)

  6 May 2026 Full applications
• P/2026/1936 Refused

  Flat First Floor, 102 New Heston Road, Hounslow, TW5 0LF

  Erection of a rear roof and outrigger extension with two front rooflights to the flat

  30 Jun 2026 Full applications
• P/2026/0592 Granted

  87 Cranleigh Road, Feltham, TW13 4QA

  Erection of a two storey residential house with associated landscaping, private amenity space, cycle and refuse storage.

  19 Feb 2026 Full applications