740 Great West Road,Isleworth,TW7 5LT Data via plota.co.uk

P/2025/2835 - Householder Applications Refused

Proposal

Erection of roof extensions and elevational alterations, including conversion of a hipped roof to a gabled crown roof with increased ridge height, a rear roof extension, and the installation of two rooflights to the house. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
22 Sept 2025
✓
Validated
30 Sept 2025
✗
Refused
25 Nov 2025
Appeal
Not lodged

Refused on 25 Nov 2025 · Last checked 12 Oct 2026

Documents 6

Decision & officer reports 2

PDF DECTP3 P-Decision Notice · 25 Nov 2025 View ↗ PDF P-Delegated Report P-Delegated Report · 21 Nov 2025 View ↗

Statements & assessments 1

PDF Planning Statment.pdf P-Planning Statement · 22 Sept 2025 View ↗

Plans & drawings 1

PDF Incl: loc plan P-All in one Plans Proposed · 22 Sept 2025 View ↗

Application forms 1

PDF ApplicationFormRedacted.pdf P-Planning Application Form · 22 Sept 2025 View ↗

Other documents 1

PDF P-Published Fire Safety P-Published Fire Safety · 30 Sept 2025 View ↗

All documents on the council site ↗

Site constraints 7

Osterley Park conservation area
Also Osterley Park. 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 Named permitted development rights are withdrawn here.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.
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
Inside the Hounslow built-up area; Public transport access: PTAL 1b (very poor), TfL 2023, for the 100 m square; National infrastructure project 1866 m away: Teddington Direct River Abstraction (TDRA), at pre-application; Designated open space 34 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 2 November 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.

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Other new applications on this street

29 Oct 2026Pending

Osterley Court, Great West Road, Isleworth, TW7 4PX

Erection of six, three storey houses with associated car parking, landscaping, c...

P/2026/2973
22 Sept 2026Approved

851-853 Great West Road, Isleworth, TW7 5PD

Erection of a single storey rear extension

P/2026/2034
14 May 2026Approved

657 Great West Road, Isleworth, TW7 4PT

Erection of a rear and side roof extension with one front roof window to the hou...

P/2026/1314

Nearby new applications

3 Nov 2026Pending

101 Thornbury Road, Isleworth, TW7 4NL

Works to two trees within a conservation area. T1 Oak (Quercus spp.). Crown redu...

P/2026/3109
3 Nov 2026Pending

21 Church Road,Isleworth,TW7 4PR

Erection of a rear roof extension with hip to gable conversion with two front ro...

P/2026/3106
2 Nov 2026Pending

150 Wood Lane,Isleworth,TW7 5EQ

Certificate of lawfulness for the proposed erection of a detached outbuilding in...

P/2026/3077
29 Oct 2026Pending

Flat 2, 117 Wood Lane, Isleworth,TW7 5EG

Conversion of the garage to a habitable room for flat 2.

P/2026/2967
29 Oct 2026Pending

173 Syon Lane,Isleworth,TW7 5PZ

(GS888126342) Erection of a single storey rear extension and new ground floor si...

P/2026/3050
23 Oct 2026Pending

269 - 271 Jersey Road, Isleworth, TW7 4RF

Works to three trees within a conservation area. Rear garden: Cedar (T6) - Fell...

P/2026/2833

Important details

Council
Hounslow
Application type
Householder Applications
Postcode
TW7 5LT
Received
22 Sept 2025
Validated
30 Sept 2025
Ward
Osterley & Spring Grove
Case officer
Show
Decision
REFUSED
Decision date
25 Nov 2025
Applicant
Show

How this decision compares

Decided in 56 days from validation, about the council's usual 56 days. Refused, as 19% of householder applications here are.

62%decided within 8 weeks
81%approved
724decided in the last year

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

Consultation & key dates

Consultation
1 Oct 2025
Comments by
12 Nov 2025
Site or press notice
10 Oct 2025
Statutory expiry
25 Nov 2025

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved
732 Great West Road, Isleworth, TW7 5LT
Felling of Eucalyptus tree within a conservation area.
P/2025/2855
2025 Approved
732 Great West Road, Isleworth, TW7 5LT
Erection of a single storey rear extension to the house
P/2025/2576
2025 Approved
20 Leigham Drive, Isleworth, TW7 5LU
Erection of a hip to gable roof and rear roof extension with Juliet balcony and two front…
P/2025/1527
2024 Approved
20 Leigham Drive, Isleworth, TW7 5LU
Erection of a hip to gable conversion and rear roof extension with Juliet balcony and two…
P/2024/4048
2024 Approved
26 Leigham Drive, Isleworth, TW7 5LU
Erection of a single storey rear extension, pitched roof over existing single storey side…
P/2024/2360
2022 Approved
32 LEIGHAM DRIVE, ISLEWORTH, TW7 5LU
Erection of a rear roof extension with roof window to the front of the house.
P/2022/3812
2022 Approved
2 LEIGHAM DRIVE, ISLEWORTH, TW7 5LU
Erection of rear outbuilding and external swimming pool to the rear of the house.
P/2022/3290
2022 Approved
2 LEIGHAM DRIVE, ISLEWORTH, TW7 5LU
Felling of a Red Cedar (Thuja plicata) tree within a conservation area
P/2022/3397
2022 Approved
2 LEIGHAM DRIVE, ISLEWORTH, TW7 5LU
Erection of a part single side extension and two storey rear extension, garage conversion…
P/2022/2226
2022 Refused
2 LEIGHAM DRIVE, ISLEWORTH, TW7 5LU
Erection of a part single part double storey side and rear extension, garage conversion t…
P/2022/1543
2022 Approved
722 GREAT WEST ROAD, ISLEWORTH, TW7 5LT
Erection of a part side and rear single storey extension with roof lantern to the house
P/2022/0795
2021 Approved
2 LEIGHAM DRIVE, ISLEWORTH, TW7 5LU
Erection of a part single part double storey side and rear extension and conversion of ga…
P/2021/4448
2021 Refused
2 LEIGHAM DRIVE, ISLEWORTH, TW7 5LU
Erection of a part single part double storey side and rear extension and conversion of ga…
P/2021/3461
2020 Approved
18 LEIGHAM DRIVE, ISLEWORTH, TW7 5LU
Erection of a side and rear roof extension.
P/2020/4351
2020 Refused
18 LEIGHAM DRIVE, ISLEWORTH, TW7 5LU
Erection of a rear roof extension with hip to partial gable conversation and front roof w…
P/2020/2732
2020 Approved
738 GREAT WEST ROAD, ISLEWORTH, TW7 5LT
Fell Magnolia tree (T1) in rear garden in conservation area.
P/2020/2181
2018 Approved
714 GREAT WEST ROAD, ISLEWORTH, TW7 5LT
Construction of a 1.2m extension to existing vehicular access to the house
P/2018/3582
2018 Approved
720 GREAT WEST ROAD ISLEWORTH LONDON TW7 5LT
Erection of a single storey side extension
P/2018/2079
2017 Approved
10 LEIGHAM DRIVE ISLEWORTH TW7 5LU
Erection of a rear roof extension with two front roof windows to replace existing larger…
P/2017/5017
2017 Approved
12 LEIGHAM DRIVE ISLEWORTH TW7 5LU
Erection of a rear roof extension with three front roof windows to replace existing large…
P/2017/5023
2016 Approved
742 GREAT WEST ROAD ISLEWORTH TW7 5LT
Proposed extension to existing vehicluar crossover
P/2016/2058
2024 Approved
20 Leigham Drive, Isleworth, TW7 5LU
Certificate of lawfulness for hip to gable conversion and erection of rear roof extension…
P/2024/3682
2019 Refused
16 LEIGHAM DRIVE, ISLEWORTH, TW7 5LU
Certificate of Lawfulness for the erection of a side and rear roof extension with two fro…
P/2019/4652
2019 Refused
18 LEIGHAM DRIVE, ISLEWORTH, TW7 5LU
Certificate of Lawfulness for the erection of a side and rear roof extension with two fro…
P/2019/4654
2017 Refused
10 LEIGHAM DRIVE ISLEWORTH TW7 5LU
Certificate of Lawfulness for existing rear roof extension.
P/2017/4027
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