590 The Gunnersbury Chiswick High Road, Chiswick, W4 5RP
Proposal
Variation of Condition 2 (approved plans) to allow changes to the front (southern) elevation of the building, to include the formation of one terrace balcony on the first floor and two balconies on the second floor, together with a 0.3 metre increase in the width of the approved rear-facing first and second balconies of planning permission 00248/590/P14 dated 29/05/2020 for erection of a two-storey rear extension above the existing single-storey rear addition to create two new self-contained flats, the creation of three further self-contained flats through the addition of a fourth storey to the roof of the main building and a mansard fourth storey to the roof of the three-storey side extension, and general alterations to the upper floors of the existing building including new or redesigned windows in the rear and side elevations.
- Received
- 2 October 2020
- Decided
- 23 December 2020 · APPROVED
- Decision level
- Delegated (officer decision)
- Council
- London Borough of Hounslow
- Ward
- Turnham Green (Pre May 2022)
- ReceivedSubmitted2 Oct
- ValidatedValidated2 Oct
- Consult.Consultation
- TargetTarget Date
- DecidedDecided23 Dec
Decided in 82 days (council typically 56)
This is a full planning application for a two storey rear extension at 590 THE GUNNERSBURY CHISWICK HIGH ROAD, CHISWICK, W4 5RP. Hounslow has handled 2,388 applications of this type and approves 77% of them, typically deciding them in 58 days. This one was decided in 82 days, 3 weeks longer than Hounslow's median. The site is in the Thorney Hedge conservation area. There are no previous applications recorded at this address. We hold 6,560 applications in total for the W4 postcode area.
Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Hounslow
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Planning constraints
Designations at the address point. Ones next to the site may also apply.
- Conservation area: Thorney Hedge
- Article 4 direction: Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction
- Flood zone 1: Low probability (rivers and sea)
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 2026-10-09. 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.
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