437 Ground Floor Flat, Chiswick High Road, Chiswick,, London,W4 4AU Data via plota.co.uk

P/2026/2571 - PF-Full Applications REGISTERED: Under Consultation
Extensions & alterations

Proposal

Retrospective application for the erection of two single storey detached out building in the rear garden. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
10 Sept 2026
✓
Validated
21 Oct 2026
Decision
Expected by 16 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 14 Dec 2026, from Hounslow's recent extensions.

Comments are open until 20 Nov 2026

Comment on this application ↗

Documents 3

Plans & drawings 2

PDF Existing floor and elevation plans 437 Chiswick High Road, Chiswick, London W4 4AU-EXT.pdf P-Existing Plans · 20 Oct 2026 View ↗ PDF Location plan.pdf P-Location Plan · 20 Oct 2026 View ↗

Application forms 1

PDF ApplicationFormRedacted.pdf P-Planning Application Form · 20 Oct 2026 View ↗

All documents on the council site ↗

Site constraints 8

Wellesley Road conservation area
Also Wellesley Road. Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Article 4 direction
Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Archaeological priority area: The line of the main Roman Road from Londinium to Silchester and the West
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
Air quality management area: Hounslow AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
Also on the record
Local nature reserve 421 m away: Gunnersbury Triangle; National infrastructure project 1589 m away: Thames Tideway Tunnel; Inside the Hounslow built-up area; Public transport access: PTAL 4 (good), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 24 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

Building

Floor area64 m² (689 sq ft)
Energy ratingD (68 out of 100), could reach C
PropertyMid-terrace flat, 3 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in September 2019, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Hounslow
Application type
PF-Full Applications
Postcode
W4 4AU
Received
10 Sept 2026
Validated
21 Oct 2026
Ward
Chiswick Gunnersbury
Case officer
Show
Applicant
Show
Freehold owner
Show

Decision outlook

Day 7 of the 56-day target. Hounslow usually decides extensions by day 54.

Day 749 days to the 56-day target
78%decided within 8 weeks
81%approved
924decided in the last year

Plota live figures for extensions decided by Hounslow in the last twelve months, from validation. Hounslow decision record →

Consultation & key dates

Consultation
23 Oct 2026
Comments by
20 Nov 2026
Site or press notice
30 Oct 2026
Statutory expiry
16 Dec 2026

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
5 Cambridge Road North, Chiswick, London, W4 4AA
Works to tree in a Conservation Area 1 X T1 Magnolia reduce all aspects of the crown by a…
P/2025/2628
2024 Approved
Gillian Court, Cambridge Road North, Chiswick W4 4AA
Works to trees in a Conservation Area: Cypress (T1) - Fell to ground level. Sycamore (T2)…
P/2024/3705
2024 Withdrawn
Gillian Court,Cambridge Road North,Chiswick,London,Hounslow,W4 4AA
T1 Cypress Suggested cause of damage to neighbouring property. Fell to ground level. T2 S…
P/2024/3709
2024 Approved
10 CAMBRIDGE ROAD NORTH, CHISWICK, W4 4AA
Works to a tree within Tree Protection Order No. 583: Sycamore (Acer pseudoplatanus) (T1)…
P/2024/1160
2024 Approved
GROUND AND FIRST FLOOR FLAT 8 CAMBRIDGE ROAD NORTH, CHISWICK, W4 4AA
Works to trees in a Conservation Area - Felling of two Prunus trees in the rear garden
P/2024/0409
2023 Approved
17 CAMBRIDGE ROAD NORTH, CHISWICK, LONDON, W4 4AA
Erection of a replacement single storey rear extension following demolition of the existi…
P/2023/2025
2023 Refused
GILLIAN COURT CAMBRIDGE ROAD NORTH, CHISWICK, LONDON, W4 4AA
Erection of an additional floor above the existing garages to create one self-contained u…
P/2023/0411
2022 Approved
15-17 CAMBRIDGE ROAD NORTH, CHISWICK, W4 4AA
Erection of side and rear roof dormer extensions to Nos. 15 and 17 Cambridge Road North.
P/2022/1635
2022 Approved
4 POWER ROAD, CHISWICK, W4 5YT
Installation of a surface mounted internally illuminated chrome 'MG' logo.
P/2022/1679
2022 Approved
11 CAMBRIDGE ROAD NORTH, CHISWICK, W4 4AA
Fell four trees to ground level and grind stumps to approx 300mm below ground level in re…
P/2022/1117
2022 Approved
4 POWER ROAD, CHISWICK, LONDON, W4 5YT
Consent to display one internally illuminated totem sign, three internally illuminated si…
P/2022/0645
2022 Approved
4 POWER ROAD, CHISWICK, W4 5YT
Erection of a side extension to each side of the building
P/2022/0196
2021 Withdrawn
4 POWER ROAD, CHISWICK, LONDON, W4 5YT
Side extensions to show room under existing roof, and change of advertisement and fascia…
P/2021/3875
2021 Approved
4 POWER ROAD, CHISWICK, LONDON, W4 5YT
Installation of a front fascia sign to the showroom.
P/2021/3877
2021 Approved
15-17 CAMBRIDGE ROAD NORTH, CHISWICK, LONDON, W4 4AA
Joint application for the erection of a part single storey rear, part three storey rear i…
P/2021/1827
2021 Approved
BASEMENT FLAT 437 CHISWICK HIGH ROAD, CHISWICK, LONDON, W4 4AU
Erection of a single storey rear infill extension.
P/2021/2138
2021 Refused
GILLIAN COURT CAMBRIDGE ROAD NORTH, CHISWICK, LONDON, W4 4AA
Demolition of the southernmost garage and erection of a one bedroom house with part singl…
P/2021/1516
2021 Approved
453-457 CHISWICK HIGH ROAD, CHISWICK, LONDON, W4 4AU
Installation of external gas pipe apparatus to the front and rear of the building
P/2021/0410
2020 Approved
15-17 CAMBRIDGE ROAD NORTH, CHISWICK, LONDON, W4 4AA
Joint application for the erection of a part single, part two storey infill rear extensio…
P/2020/3886
2020 Withdrawn
GILLIAN COURT CAMBRIDGE ROAD NORTH, CHISWICK, W4 4AA
Demolition of the southernmost garage and erection of a one bedroom house with part singl…
P/2020/4425
2016 Refused
BASEMENT FLAT 4 CAMBRIDGE ROAD NORTH CHISWICK LONDON W4 4AA
Erection of a single storey side and rear extension to the builidng
P/2016/3662
2016 Approved
Basement Flat 8 CAMBRIDGE ROAD NORTH CHISWICK LONDON W4 4AA
Erection of a single storey rear extension to the basement flat and a detached single sto…
P/2016/1162
2016 Approved
3 CAMBRIDGE ROAD NORTH CHISWICK LONDON W4 4AA
Works to trees within a conservation area - Walnut Tree to be felled and replaced with or…
P/2016/2769
2016 Approved
5 CAMBRIDGE ROAD NORTH CHISWICK LONDON W4 4AA
Erection of a three storey rear extension
P/2016/1411
2016 Withdrawn
8 CAMBRIDGE ROAD NORTH CHISWICK LONDON W4 4AA
Proposed extension to basement flat (will need to be re-referenced, ref duplicated)
P/2016/1057
Hounslow
Planning Authority Score
2.1/10
Poor
#268 of 296 councils
Relevant to this application:
Householder decisions

Hounslow is slower than most councils at deciding householder applications, ranking #203 out of 296. 47% of applications have the time limit extended, above the 41% national average. Hounslow is also one of the strictest councils - it refuses more householder applications than almost any other, with only 75% approved vs 90% nationally.

One of the strictest councils
only 75% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Hounslow decision statistics
Based on MHCLG data, the year to March 2026
71%
Overall approval rate
Below avg (87%) #294 of 296
75%
Householder approved
Below avg (90%) #293 of 296
56%
Decided in 8 weeks
Below avg (63%) #203 of 296
47%
Extended time limit
Above avg (41%) #208 of 296
38%
Minor dwellings approved
82 decided (1-9 homes)
93%
Major dwellings approved
14 decided (10+ homes)
29%
Change of use approved
72 decided
1,191
Total decisions
340 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.

Freehold owner: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.