23 Thornbury Road,Isleworth,TW7 4LQ Data via plota.co.uk

P/2026/1607 - Works to Trees in Conservation Area Approved
Trees & landscaping

Proposal

Works to trees in a conservation area: Front garden. G1. Olive Group. Reduce height by up to 3 metres and reshape. Rear garden. T2. Lawson Cypress. Fell to ground level. T3. Purple Leafed Plum. Reduce crown back to most recent previous reduction and reshape. G4. Cherry. Laurel Reduce height by up to 2 metres and reshape. T5. Hazel. Reduce crown by up to 3 metres. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
29 May 2026
✓
Approved
26 Jun 2026

Approved on 26 Jun 2026 · Last checked 19 Sept 2026

Documents 4

Decision & officer reports 2

PDF DECCONSA P-Decision Notice · 26 Jun 2026 View ↗ PDF P-Delegated Report P-Delegated Report · 24 Jun 2026 View ↗

Application forms 1

PDF ApplicationFormRedacted.pdf P-Planning Application Form · 29 May 2026 View ↗

Other documents 1

PDF 23 Thornbury Road map.pdf P-Proposed Other · 29 May 2026 View ↗

All documents on the council site ↗

Site constraints 7

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 Named permitted development rights are withdrawn here.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.
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 ↗
1 listed building within 150 m
Nearest: Osterley Mansions, Grade II, 49 m away
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Historic England ↗
Also on the record
Inside the Hounslow built-up area; Public transport access: PTAL 3 (moderate), TfL 2023, for the 100 m square; National infrastructure project 1019 m away: Teddington Direct River Abstraction (TDRA), at pre-application.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 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.

Sales history 2

Last sold for £443,000 in February 2005. Terraced house, freehold.

8 February 2005£443,000
15 June 2001£286,000

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

Building

Floor area133 m² (1,432 sq ft)
Energy ratingE (40 out of 100)
PropertySemi-detached house, 6 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in June 2011, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

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Important details

Council
Hounslow
Application type
Works to Trees in Conservation Area
Postcode
TW7 4LQ
Received
29 May 2026
Validated
29 May 2026
Ward
Osterley & Spring Grove
Case officer
Show
Decision
No Objection
Decision date
26 Jun 2026
Applicant
Show

How this decision compares

Decided in 28 days from validation, about the council's usual 27 days. Approved, as 99% of tree and landscaping works here are.

98%decided within 8 weeks
99%approved
499decided in the last year

Plota live figures for tree and landscaping works decided by Hounslow in the last twelve months, from validation. Hounslow decision record →

Public comments

No public comments yet.

Read the comments on the council site ↗

Consultation & key dates

Consultation
29 May 2026
Statutory expiry
10 Jul 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
Ground Floor Flat, 41 Thornbury Road, Isleworth, TW7 4LE
Erection of a detached outbuilding in the rear garden to be used as a home office for the…
P/2025/3707
2025 Approved
62 Thornbury Road, Isleworth, TW7 4LN
Erection a single storey side and rear extension following the demolition of an existing…
P/2025/3090
2025 Approved
45 Thornbury Road, Isleworth, TW7 4LE
Works to trees within a conservation area. T1. Beech group x 13. Carry out a crown reduct…
P/2025/3351
2025 Refused
34 Thornbury Road, Isleworth, TW7 4LL
Front extension of the existing double garage and replacement of the rear garage door to…
P/2025/1814
2025 Approved
225 Spring Grove Road, Isleworth, TW7 4AF
Works to tree in a Conservation Area - Removal of Ash tree at the rear of the property (5…
P/2025/2761
2025 Approved
33 Thornbury Road, Isleworth, TW7 4LQ
Enlargement of the existing basement floor, installation of external stairs and erection…
P/2025/0356
2024 Approved
Osterley Mansions, Thornbury Road ,Isleworth, TW7 4LJ
Listed building consent for the installation of secondary glazing to all front windows an…
P/2024/3476
2024 Approved
Osterley Mansions, Thornbury Road, Isleworth, TW7 4LJ
Installation of secondary glazing to all front windows and some rear windows, replacement…
P/2024/3756
2024 Withdrawn
Osterley Mansions, Thornbury Road ,Isleworth, TW7 4LJ
Listed building consent for the Installation of secondary glazing to all front windows an…
P/2024/3486
2023 Approved
209 SPRING GROVE ROAD, ISLEWORTH, TW7 4AH
Erection of single storey rear ground floor extension to the house and conversion of gara…
P/2023/3911
2023 Withdrawn
45 THORNBURY ROAD, ISLEWORTH, TW7 4LE
Erection of a boundary fence along the side and back of property
P/2023/3355
2023 Approved
4 STANLEYCROFT CLOSE, ISLEWORTH, TW7 4LG
Works to two Plum Trees within a Conservation Area. T1 - Trim overhanging branch back by…
P/2023/2894
2023 Approved
23 THORNBURY ROAD, ISLEWORTH, TW7 4LQ
Works to trees within conservation area: G1 x 5 Olive (Olea europaea) ? Crown reduction b…
P/2023/1083
2022 Approved
HUJJITAT IMAMBARA SHIA ISLAMIC CENTRE 19 THORNBURY ROAD, ISLEWORTH, TW7 4HQ
Retrospective application for the retention of wooden decking to the rear of the property
P/2022/3897
2023 Approved
209 SPRING GROVE ROAD, ISLEWORTH, TW7 4AH
Work to trees within conservation area Felling of T02 (Saucer Magnolia) and Felling of T0…
P/2023/0277
2022 Refused
50D THORNBURY ROAD, ISLEWORTH, TW7 4LL
Erection of a second floor extensions to side and rear and addition of Juliet balcony to…
P/2022/3312
2022 Approved
25A THORNBURY ROAD, ISLEWORTH, TW7 4LQ
Rear garden T1 Horse Chestnut x 1 (Aesculus hippocastanum): Selectively prune all around…
P/2022/3051
2022 Approved
34 THORNBURY ROAD, ISLEWORTH, TW7 4LL
Fell 3 trees in rear garden in conservation area: T2-T3 Leyland cypress and T7 Lawson cyp…
P/2022/1489
2022 Withdrawn
45 THORNBURY ROAD, ISLEWORTH, TW7 4LE
Erection of a boundary fence along the side and back of property
P/2022/1347
2022 Approved
HUJJITAT IMAMBARA SHIA ISLAMIC CENTRE 19 THORNBURY ROAD, ISLEWORTH, TW7 4HQ
Five day notice to fell tree in rear garden
P/2022/1594
2016 Approved
HUJJITAT IMAMBARA SHIA ISLAMIC CENTRE 19 THORNBURY ROAD ISLEWORTH LONDON TW7 4HQ
Erection of a front porch to replace existing
P/2016/1969
2016 Approved
7 VILLIERS ROAD ISLEWORTH LONDON TW7 4HW
Works to trees within a conservation area: T1 Magnolia Grandiflora - Lifting the crown an…
P/2016/2298
2016 Approved
OSTERLEY MANSIONS THORNBURY ROAD ISLEWORTH LONDON TW7 4LJ
Listed building consent for conversion of loft space into habitable space to create an ad…
P/2016/1849
2016 Approved
OSTERLEY MANSIONS THORNBURY ROAD ISLEWORTH LONDON TW7 4LJ
Conversion of loft space into habitable space to create an additional two flats. Conversi…
P/2016/1820
2016 Approved
31 THORNBURY ROAD ISLEWORTH LONDON TW7 4LQ
Removal of conifer hedges within a conservation area
P/2016/1161
Hounslow
Planning Authority Score
2.1/10
Poor
#268 of 296 councils
Relevant to this application:
Other 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

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.