12 A Oaklands Avenue, Isleworth, TW7 5PX Data via plota.co.uk

P/2025/3420 - Householder Applications Approved

Proposal

Erection of a single storey rear extension to the house and erection of a single storey detached outbuilding following demolition of the existing detached outbuilding in the rear garden Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
14 Nov 2025
✓
Validated
4 Dec 2025
✓
Approved
2 Mar 2026

Approved on 2 Mar 2026 · Last checked 4 Oct 2026

Documents 18

Decision & officer reports 2

PDF P-Delegated Report P-Delegated Report · 2 Mar 2026 View ↗ PDF DECTP2 P-Decision Notice · 2 Mar 2026 View ↗

Plans & drawings 11

PDF Proposed plans and elevations P-Proposed Other · 9 Feb 2026 View ↗ PDF Existing plans and elevations P-Existing Other · 9 Feb 2026 View ↗ PDF FS plan P-Published Fire Safety · 9 Feb 2026 View ↗ PDF FS elevations P-Published Fire Safety · 9 Feb 2026 View ↗ PDF P-Rejected Plans P-Rejected Plans · 4 Dec 2025 View ↗ PDF MBCS25-024 APL001 P1 LOCATION PLAN.pdf P-Location Plan · 14 Nov 2025 View ↗ PDF MBCS25-024 APL010 P1 EXIST SITE PLAN.pdf P-Existing Site · 14 Nov 2025 View ↗ PDF MBCS25-024 APL011 P1 EXIST GF PLAN AND REAR AND SIDE ELEVS.pdf P-Rejected Plans · 14 Nov 2025 View ↗ PDF MBCS25-024 APL020 P1 PROP SITE PLAN.pdf P-Proposed Site · 14 Nov 2025 View ↗ PDF MBCS25-024 APL021 P1 PROP GF PLAN AND ELEVATIONS TO EXTENSION.pdf P-Rejected Plans · 14 Nov 2025 View ↗ PDF MBCS25-024 APL022 PROP PLANS AND ELEVATIONS TO GARDEN ROOM.pdf P-Proposed Elevation · 14 Nov 2025 View ↗

Application forms 1

PDF ApplicationFormRedacted.pdf P-Planning Application Form · 14 Nov 2025 View ↗

Other documents 4

PDF P-Published Fire Safety P-Published Fire Safety · 4 Dec 2025 View ↗ PDF P-Published Fire Safety P-Published Fire Safety · 4 Dec 2025 View ↗ PDF P-Published Fire Safety P-Published Fire Safety · 4 Dec 2025 View ↗ PDF P-Published Fire Safety P-Published Fire Safety · 4 Dec 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 ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Inside the Hounslow built-up area; Public transport access: PTAL 1b (very poor), TfL 2023, for the 100 m square; Metropolitan Open Land 51 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, 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.

Sales history 1

Last sold for £282,500 in April 2002. Semi-detached house, freehold.

29 April 2002£282,500

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

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Important details

Council
Hounslow
Application type
Householder Applications
Postcode
TW7 5PX
Received
14 Nov 2025
Validated
4 Dec 2025
Ward
Osterley & Spring Grove
Case officer
Show
Decision
APPROVED
Decision date
2 Mar 2026
Applicant
Show

How this decision compares

Decided in 88 days from validation, 32 days slower than Hounslow's median of 56 for householder applications. Approved, as 81% 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
8 Dec 2025
Comments by
2 Jan 2026
Site or press notice
12 Dec 2025
Statutory expiry
29 Jan 2026

Historical activity at this location

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

Within ~100m

Nearby activity

2025
33 Oaklands Avenue, Isleworth, TW7 5PX
Works to tree in a Conservation Area - 1 X Leyland Cypress (Cuprocyparis leylandii) be tr…
P/2025/3422
2024 Withdrawn
21 Oaklands Avenue, Isleworth, TW7 5PX
Erection of rear and side dormer and one front roof light.
P/2024/3811
2024 Approved
21 Oaklands Avenue, Isleworth, TW7 5PX
Proposal for the erection of a single storey rear and side extension.
P/2024/2972
2024 Refused
21 Oaklands Avenue, Isleworth, TW7 5PX
Erection of a single storey side and rear extension and a rear roof extension with hip to…
P/2024/1845
2023 Approved
23 OAKLANDS AVENUE, ISLEWORTH, TW7 5PX
Erection of a single storey front porch
P/2023/4010
2023 Approved
23 OAKLANDS AVENUE, ISLEWORTH, TW7 5PX
Erection of a rear roof extension with Juliet balcony and side roof extension to the hous…
P/2023/2906
2023 Approved
23 OAKLANDS AVENUE, ISLEWORTH, TW7 5PX
Retrospective application for the erection of a single storey side and rear extension.
P/2023/2276
2023 Approved
20 OAKLANDS AVENUE, ISLEWORTH, TW7 5PX
Felling of a Scotts Pine tree within a Conservation Area.
P/2023/2552
2023 Refused
23 OAKLANDS AVENUE, ISLEWORTH, TW7 5PX
Erection of a rear roof extension with Juliet balcony and side roof extension to the hous…
P/2023/2299
2023 Approved
15 OAKLANDS AVENUE, ISLEWORTH, TW7 5PX
Work to tree within conservation area Felling of Pyracantha (Firethorn) tree
P/2023/2298
2023 Approved
5 OAKLANDS AVENUE, ISLEWORTH, TW7 5PX
Erection of rear and side roof extensions following the demolition of the existing hip to…
P/2023/1492
2023 Approved
213 SYON LANE, ISLEWORTH, TW7 5PU
Retrospective application for the erection of a gate and railing to the front boundary of…
P/2023/0799
2023 Approved
23 OAKLANDS AVENUE, ISLEWORTH, TW7 5PX
Erection of ground floor rear, in-fill and side extension to the house.
P/2023/0203
2022 Approved
58 OAKLANDS AVENUE, ISLEWORTH, TW7 5PY
Erection of a single storey rear extension to the house
P/2022/1685
2022 Approved
185 SYON LANE, ISLEWORTH, TW7 5PU
Erection of a rear roof extension with two front roof windows.
P/2022/1009
2022 Refused
185 SYON LANE, ISLEWORTH, TW7 5PU
Erection of a rear roof extension with two front roof windows
P/2022/0290
2022 Approved
58 OAKLANDS AVENUE, ISLEWORTH, TW7 5PY
Ground floor rear extension 6.00 metres deep, maximum height 4.00 metres, 2.80 metres hig…
PA/2022/0678
2022 Approved
20 OAKLANDS AVENUE, ISLEWORTH, TW7 5PX
Erection of a single storey rear extension, a part side extension, a front porch and conv…
P/2022/0056
2021 Approved
195 SYON LANE, ISLEWORTH, TW7 5PU
Works to a Magnolia Tree (T1) in a conservation area by reducing crown by 1-2m, leaving a…
P/2021/4551
2021 Approved
31 OAKLANDS AVENUE, ISLEWORTH, TW7 5PX
Erection of a single storey rear extension to the house
P/2021/3328
2017
187 Syon Lane ISLEWORTH TW7 5PU
P/2017/0537
2016 Approved
30 OAKLANDS AVENUE ISLEWORTH LONDON TW7 5PX
Ground floor rear extension 4.85 metres deep, maximum height of 3.6 metres, 3 metres high…
PA/2016/3798
2016 Refused
211 SYON LANE ISLEWORTH TW7 5PU
Formation of vehicular access to the front of the house
P/2016/3132
2016 Approved
30 OAKLANDS AVENUE ISLEWORTH LONDON TW7 5PX
Ground floor rear extension 6m deep, 3m high to the eaves with the maximum height of 3.5m.
PA/2016/3036
2016 Refused
185 SYON LANE ISLEWORTH LONDON TW7 5PU
Erection of a single storey rear extension to the house
P/2016/1366
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

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

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