586 London Road,Isleworth,TW7 4EY Data via plota.co.uk

P/2026/2141 - Lawful Development Certificate (Proposed) REGISTERED: Under Assessment
Extensions & alterations

Proposal

Certificate of lawfulness for the proposed erection of a front porch. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
22 Jul 2026
Decision
Expected by 16 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 54.

Documents 7

Plans & drawings 6

PDF Block plan porch 586 London Road Isleworth.pdf P-Proposed Site · 22 Jul 2026 View ↗ PDF Proposed front and side elevations 586 London Road Isleworth.pdf P-Proposed Other · 22 Jul 2026 View ↗ PDF Proposed ground floor and roof plan 586 London Road Isleworth.pdf P-Proposed Other · 22 Jul 2026 View ↗ PDF Existing front and side elevations 586 London Road Isleworth.pdf P-Proposed Other · 22 Jul 2026 View ↗ PDF Existing ground floor and roof plan 586 London Road Isleworth.pdf P-Proposed Other · 22 Jul 2026 View ↗ PDF Location plan 586 London Road Isleworth.pdf P-Location Plan · 22 Jul 2026 View ↗

Application forms 1

PDF ApplicationFormRedacted.pdf P-Planning Application Form · 22 Jul 2026 View ↗

All documents on the council site ↗

Site constraints 6

Spring Grove conservation area
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.
Council document ↗
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 Named permitted development rights are withdrawn here.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
Inside the Hounslow built-up area; Designated open space 40 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building 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

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Works to trees in a Conservation Area T1 - T2 Leyland Cypress x2 Cut back awa...

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9 Sept 2026Pending

491 London Road,Isleworth,TW7 4DA

Works to trees for TPO 130 1 X T1 Sycamore crown reduce by approximately 2 met...

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9 Sept 2026Pending

31 Spencer Road, Isleworth, TW7 4BN

Ground floor rear extension 4.00 metres deep, maximum height 3.60 metres, 3.00 m...

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8 Sept 2026Pending

62 Thornbury Road,Isleworth,TW7 4LN

Erection of a single storey detached outbuilding.

P/2026/2541
24 Aug 2026Pending

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Erection of a two storey side extension, single storey rear extension and part f...

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Important details

Council
Hounslow
Application type
Lawful Development Certificate (Proposed)
Postcode
TW7 4EY
Received
22 Jul 2026
Validated
22 Jul 2026
Ward
Hounslow East
Case officer
Show
Applicant
Show

Decision outlook

Day 54, past Hounslow's usual 50 days for extensions. 96% are decided within thirteen weeks, so most likely by 21 Oct 2026.

Day 542 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
22 Jul 2026
Statutory expiry
16 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
572 London Road, Isleworth, TW7 4EP
Erection of a two storey ancillary building following the demolition of the existing deta…
P/2025/3528
2025 Approved
7 Thornbury Road, Isleworth, TW7 4HQ
Erection of a single storey rear extension following the demolition of existing conservat…
P/2025/3226
2025 Approved
586 London Road, Isleworth, TW7 4EY
Works to Walnut tree (T1) in rear garden within TPO 512 - Reduce back to previous points…
P/2025/2967
2025 Withdrawn
586 London Road, Isleworth, TW7 4EY
The tree has grown and overhanging towards my neighbours and they have requested it to be…
P/2025/2873
2025
578 London Road, Isleworth, TW7 4EY
Erection of a single storey rear infill extension to the house and erection of detached s…
P/2025/1908
2025 Refused
578 London Road, Isleworth, TW7 4EY
Erection of a single storey rear infill and side roof extension with two front roof windo…
P/2025/0546
2024 Withdrawn
578 London Road, Isleworth, TW7 4EY
Erection of single storey ground floor infill extension and part two storey rear extensio…
P/2024/3394
2024 Withdrawn
572B London Road, Isleworth, TW7 4EP
Erection of a mansard roof extension and the raising of the party wall to create an addit…
P/2024/1448
2023 Refused
572B LONDON ROAD, ISLEWORTH, TW7 4EP
Erection of a mansard roof extension to the front and rear of the existing terrace.
P/2023/3943
2024 Approved
2 HONNOR GARDENS, ISLEWORTH, TW7 4SY
Erection of a single storey rear extension, conversion of existing garage into a habitabl…
P/2024/0003
2023 Approved
2 THORNBURY ROAD, ISLEWORTH, TW7 4HG
Works to a tree in a conservation area: 1x Malus fell and grind out stump.
P/2023/3267
2023 Approved
621 LONDON ROAD, ISLEWORTH, TW7 4ER
Erection of a single storey rear extension and two storey side extension.
P/2023/0143
2022 Approved
8 HONNOR GARDENS, ISLEWORTH, TW7 4SY
Conversion of existing garage into a habitable room including replacement of the garage d…
P/2022/2935
2022 Refused
572 LONDON ROAD, ISLEWORTH, TW7 4EP
Erection of a first floor extension to garage and replacement of front garage door with d…
P/2022/1050
2021 Approved
2 THORNBURY ROAD, ISLEWORTH, TW7 4HG
Works to two lime trees in rear garden in conservation area. T1 Lime removing 2m of new g…
P/2021/4303
2021 Approved
14 THORNBURY ROAD, ISLEWORTH, TW7 4HG
Works to Silver Birch within Tree Preservation Order Number 522 comprising of shortening…
P/2021/3896
2021 Approved
STREET RECORD HONNOR GARDENS, ISLEWORTH, TW7 4SY
Works to trees within TPO 519, six Sycamores trees prune back branches overhanging No. 59…
P/2021/2764
2021 Approved
588 LONDON ROAD, ISLEWORTH, TW7 4EY
Erection of a single storey rear extension to the house
P/2021/1692
2021 Approved
586 LONDON ROAD, ISLEWORTH, TW7 4EY
Works to Walnut tree (T1) in rear garden within TPO 512 (00707/586/TPO1/T1). Crown reduct…
P/2021/0563
2019 Approved
10A THORNBURY ROAD, ISLEWORTH, TW7 4HG
Erection of a carport containing two vertical raising cranes
P/2019/3658
2016 Approved
1 DRAPER CLOSE ISLEWORTH TW7 4SX
Erection of a single storey rear extension to the house
P/2016/5460
2016 Approved
578 LONDON ROAD ISLEWORTH TW7 4EY
Formation of vehicular access
P/2016/2015
2016 Withdrawn
10A THORNBURY ROAD ISLEWORTH LONDON TW7 4HG
Lowering the existing roof
P/2016/2384
2016 Approved
13 THORNBURY ROAD ISLEWORTH TW7 4HQ
Erection of single storey rear infill extension
P/2016/1530
2016 Withdrawn
578 LONDON ROAD ISLEWORTH LONDON TW7 4EY
Formation of vehicular access
P/2016/1456
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