851-853 Great West Road, Isleworth, TW7 5PD Data via plota.co.uk

P/2026/2034 - Householder Applications REGISTERED: Under Assessment
Extensions & alterations

Proposal

Erection of a single storey rear extension Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Validated
23 Jul 2026
✓
Received
24 Jul 2026
Decision
Expected by 17 Sept 2026

This application is under consideration - no decision has been issued yet. Plota predicted a decision around 14 Sept 2026; it is now day 53. The consultation period closed on 14 Aug 2026.

Documents 5

Plans & drawings 1

PDF P-Location Plan P-Location Plan · 13 Jul 2026 View ↗

Application forms 1

PDF P-Planning Application Form P-Planning Application Form · 28 Jul 2026 View ↗

Other documents 3

PDF P-Published Fire Safety P-Published Fire Safety · 24 Jul 2026 View ↗ PDF P-All in one Plans Proposed P-All in one Plans Proposed · 24 Jul 2026 View ↗ PDF P-All in one Plans Proposed P-All in one Plans Proposed · 13 Jul 2026 View ↗

All documents on the council site ↗

Site constraints 3

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 Named permitted development rights are withdrawn here.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.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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

15 May 2026Pending

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

4 Sept 2026Pending

115 Roxborough Avenue, Isleworth, TW7 5HH

Erection of a single storey rear extension, front porch extension, part side ext...

P/2026/2474
28 Aug 2026Pending

20 Parkwood Road,Isleworth,TW7 5HA

Revised single storey rear infill extension, installation of drainage channel ad...

P/2026/2445
28 Aug 2026Pending

42 College Road,Isleworth,TW7 5DW

Certificate of lawfulness for the proposed erection of a single storey rear exte...

P/2026/2456
28 Aug 2026Pending

68 Parkwood Road, Isleworth,TW7 5HD

Removal of Condition 4 (construction method Statement) to planning permission P...

P/2026/2447
27 Aug 2026Pending

17 Borough Road,Isleworth,TW7 5DT

Works to a tree in TPO 425 - T1: Silver birch tree reduce height and sides by 2m...

P/2026/2438
7 May 2026Pending

Nishkam School West London,152 Syon Lane, Isleworth, TW7 5PN

Construction of a peace garden in the school grounds, including the addition of ...

P/2025/1944

Important details

Council
Hounslow
Application type
Householder Applications
Postcode
TW7 5PD
Received
24 Jul 2026
Validated
23 Jul 2026
Ward
Osterley & Spring Grove
Case officer
Show
Applicant
Show

Decision outlook

Day 53, past Hounslow's usual 50 days for extensions. 96% are decided within thirteen weeks, so most likely by 22 Oct 2026.

Day 533 days to the 56-day target
82%decided within 8 weeks
83%approved
767decided 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
24 Jul 2026
Comments by
14 Aug 2026
Statutory expiry
17 Sept 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
61 Roxborough Avenue, Isleworth, TW7 5HQ
Erection of a rear roof extension with three front roof windows to the house.
P/2025/2049
2022 Approved
851-855 GREAT WEST ROAD, ISLEWORTH, TW7 5PD
Ground floor rear extension 6.00 metres deep, maximum height 3.20 metres, 3.00 metres hig…
PA/2022/1927
2021 Approved
851-855 GREAT WEST ROAD, ISLEWORTH, TW7 5PD
Erection of first floor side extensions over the existing garages and part single / part…
P/2021/3142
2021 Refused
850-852 GREAT WEST ROAD, ISLEWORTH, TW7 5NG
Erection of part single storey rear extensions to Flats B at both properties .
P/2021/2546
2021 Approved
850-852 GREAT WEST ROAD, ISLEWORTH, TW7 5NG
Erection of part single storey rear extension to B Flats and hip to gable and rear roof e…
P/2021/0232
2020 Approved
822 GREAT WEST ROAD, ISLEWORTH, TW7 5NA
Erection of single storey rear and side extension
P/2020/3079
2020 Approved
53 ROXBOROUGH AVENUE, ISLEWORTH, TW7 5HQ
Erection of single storey rear and side extension to the house.
P/2020/2490
2020 Approved
822 GREAT WEST ROAD, ISLEWORTH, TW7 5NA
Ground floor rear extension 6 metres deep, maximum height of 4 metres, 2.45 metres high t…
PA/2020/2429
2020 Approved
822 GREAT WEST ROAD, ISLEWORTH, TW7 5NA
Erection of detached single storey outbuilding to the rear of the house following demolit…
P/2020/1546
2020 Refused
822 GREAT WEST ROAD, ISLEWORTH, TW7 5NA
Ground floor rear extension 6.00 metres deep, maximum height 2.95 metres, 2.95 metres hig…
PA/2020/1450
2019 Refused
846 GREAT WEST ROAD, ISLEWORTH, TW7 5NG
Ground floor rear extension 6 metres deep, maximum height of 3 metres, 2.9 metres high to…
PA/2019/4691
2019 Approved
40 ROXBOROUGH AVENUE, ISLEWORTH, TW7 5HJ
Erection of a single storey rear extension
P/2019/4196
2019 Withdrawn
ST FRANCIS OF ASSISI CHURCH 865 GREAT WEST ROAD, ISLEWORTH, TW7 5PD
Provision of a new sign affixed to an external church wall
P/2019/3720
2019 Approved
871 GREAT WEST ROAD, HOUNSLOW, LONDON, TW7 5PD
Ground floor rear extension 6 metres deep, maximum height of 3 metres, 3 metres high to t…
PA/2019/1784
2017 Approved
842 GREAT WEST ROAD ISLEWORTH LONDON TW7 5NG
Ground floor rear extension 4m deep, 2.93m high to the eaves with the maximum height of 3…
PA/2017/1884
2017 Refused
842 GREAT WEST ROAD ISLEWORTH LONDON TW7 5NG
Ground floor rear extension 5 metres deep, maximum height of 3.33 metres, 2.93 metres hig…
PA/2017/1248
2017 Refused
842 GREAT WEST ROAD ISLEWORTH LONDON TW7 5NG
Ground floor rear extension 6 metres deep, maximum height of 3.33 metres, 2.93 metres hig…
PA/2017/1247
2017 Approved
67 ROXBOROUGH AVENUE ISLEWORTH TW7 5HQ
Erection of a part single / part first floor side extension incorporating conversion of a…
P/2017/0798
2017 Refused
842 GREAT WEST ROAD ISLEWORTH LONDON TW7 5NG
Ground floor rear extension 6m deep, 2.93m high to the eaves with the maximum height of 2…
PA/2017/0043
2016 Refused
67 ROXBOROUGH AVENUE ISLEWORTH TW7 5HQ
Erection of a part single / part first floor side extension incorporating conversion of a…
P/2016/4910
2016 Approved
871 GREAT WEST ROAD HOUNSLOW LONDON TW7 5PD
Ground floor rear extension 5 metres deep, maximum height of 3 metres, 3 metres high to t…
PA/2016/0886
2016 Approved
51 ROXBOROUGH AVENUE ISLEWORTH LONDON TW7 5HQ
Erection of a single storey rear extension and conversion of front garage into habitable…
P/2016/0098
2023 Approved
820 GREAT WEST ROAD, ISLEWORTH, TW7 5NA
Certificate of lawfulness for erection of a rear roof extension with hip to gable convers…
P/2023/0871
2021 Approved
852 GREAT WEST ROAD, ISLEWORTH, TW7 5NG
Certificate of lawfulness for continue use of the house as 4 self-contained flats
P/2021/0247
2021 Approved
850 GREAT WEST ROAD, ISLEWORTH, TW7 5NG
Certificate of Lawfulness for existing use of dwelling as four self contained flats.
P/2021/0241
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