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Gable House 18-24 Turnham Green Terrace, Chiswick, W4 1QP

P/2024/0969Lawful Development Certificate (Proposed)Refused
Outline / PiP

Refused on 6 May 2025

Council decision: LAWFNOTGRANTPending Consideration

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Certificate of lawfulness for the material commencement of building operations (implementation planning permission P/2019/2776 for erection of a roof extension to form an additional storey of office (B1a) accommodation, together with external alterations to the existing office building dated 02/10/2019)

Received
22 March 2024
Decision level
Pending Consideration
Ward
Chiswick Homefields
  1. Received22 Mar
  2. Validated22 Mar
  3. Consult.22 Mar
  4. Target
  5. Decided6 May

Decided in 410 days (council typically 56)

About this application

This is an outline application for an extension at GABLE HOUSE 18-24 TURNHAM GREEN TERRACE, CHISWICK, W4 1QP. Hounslow has handled 1,060 applications of this type. This one was decided in 410 days, 51 weeks longer than Hounslow's typical decision time. The site is in the Chiswick High Road conservation area. There are no previous applications recorded at this address. In the past year there have been 324 applications across Chiswick Homefields. We hold 6,644 applications in total for the W4 postcode area.

82% of outline applications at London Borough of Hounslow were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.See what's approved near your address

Application details

Postcode
W4 1QP
Application type
Lawful Development Certificate (Proposed)
Scale / size
Small

Planning application dates

Date validated
22 March 2024
Consultation expiry
22 March 2024
Consultation end
22 March 2024
Application expires
17 May 2024

Planning decision

Statutory period
56 days

Additional information

Documents
6

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 3: High probability (rivers and sea)
  • Conservation area: Chiswick High RoadPart of the site
  • Article 4 direction: Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction+1 more

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (21)

flood storage areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Hounslow

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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