4 Huntingdon Gardens, Chiswick ,London, W4 3HX Data via plota.co.uk

Approved P/2026/1229 - Householder Applications
Extensions & alterations
Council
Hounslow 2.1/10
Date received
20 Apr 2026
Date validated
14 May 2026
Decision date
19 Jun 2026
Postcode
W4 3HX
Type
Householder Applications

Description

Conversion of part of the garage into a habitable room. Data via plota.co.uk

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Last checked

How this decision compares

Decided in 36 days from validation, 14 days faster than Hounslow's median of 50 for extensions. Approved, as 83% of extensions here are.

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 →

Site constraints 6

Flood zone 3, rivers and sea
High chance: a 1 in 100 or greater annual chance from rivers, or 1 in 200 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
Chiswick House 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 Named permitted development rights are withdrawn here.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 ↗
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.
Not affected
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

4 Sept 2026Pending

17 Huntingdon Gardens,Chiswick,London,W4 3HX

Works to trees in a Conservation Area 1 X T2 Silver Birch reduce height by ap...

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8 Apr 2026Approved

7 Huntingdon Gardens,Chiswick,London,W4 3HX

Works to tree with TPO 244. Purple Plum (T11). Crown lift to 5 metres by removi...

P/2026/1107
27 Mar 2026Withdrawn

29 Huntingdon Gardens, Chiswick, London, W4 3HX

Works to tree within a conservation area: The tree is located at the far left ha...

P/2026/1003

Nearby new applications

10 Sept 2026Pending

91 Park Road,Chiswick,W4 3ER

Erection of a two storey side and rear extension and rear roof extension.

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9 Sept 2026Pending

2 Chesterfield Road,Chiswick,London,W4 3HG

Works to tree in a Conservation Area 1 X T1 Fig tree (Ficus carica) fell the...

P/2026/2547
4 Sept 2026Pending

17 Huntingdon Gardens,Chiswick,London,W4 3HX

Works to trees in a Conservation Area 1 X T2 Silver Birch reduce height by ap...

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3 Sept 2026Pending

51 Grove Park Road, Chiswick, London W4 3RU

Work to trees within a conservation area. T1 Lime - Reduce all aspects of the cr...

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3 Sept 2026Pending

12 Chatsworth Road, Chiswick, London W4 3HY

Works to trees within a conservation area. T1 Sycamore - Reduce all aspects of t...

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1 Sept 2026Pending

53 Wilmington Avenue,Chiswick,W4 3HA

Erection of a single storey rear extension.

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Historical activity at this location

26 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2025 Approved
Erection of a single storey rear extension to the house.
P/2025/3711
Within ~100m

Nearby activity

2025 Approved
26 Huntingdon Gardens, Chiswick, London, W4 3HX
Works to tree within a conservation area - Eucalyptus (T1) Rear garden, centre and rear o…
P/2025/2669
2025 Approved
155 Park Road, Chiswick, London, W4 3EX
Works to trees in a Conservation Area - 1 X T2 Griselinia littoralis 30-40% crown reducti…
P/2025/0429
2024 Approved
77 Burlington Lane,Chiswick,W4 3ET
Works to trees in a Conservation Area - (G1) Row Cypress(Cupressus) -reduce height to pre…
P/2024/3201
2024 Approved
26 Huntingdon Gardens,Chiswick,W4 3HX
Works to a tree in a Conservation Area: Eucalyptus (T1) - Re-pollard by two metres to pre…
P/2024/3474
2024 Approved
12 CROFTON AVENUE, CHISWICK, W4 3EW
Installation of a northern ground floor side window to the house.
P/2024/0982
2024 Approved
19 CROFTON AVENUE, CHISWICK, LONDON, W4 3EW
Erection of a part front infill extension and a single storey rear extension, conversion…
P/2024/0879
2024 Approved
12 CROFTON AVENUE, CHISWICK, W4 3EW
Works to trees in a Conservation Area: Robinia (T1) - Crown height reduction by up to 3.5…
P/2024/0949
2023 Approved
91 BURLINGTON LANE, CHISWICK, LONDON, W4 3ET
Erection of a single storey rear extension and ground floor front infill extension within…
P/2023/4003
2023 Approved
93 BURLINGTON LANE, CHISWICK, LONDON, W4 3ET
Erection of a single storey rear extension and the conversion of the garage into a habita…
P/2023/4004
2024 Approved
13 CROFTON AVENUE, CHISWICK, W4 3EW
Works to Robinia tree (T1) in rear garden in conservation area. Remove all dead branches…
P/2024/1026
2024 Withdrawn
77 BURLINGTON LANE, CHISWICK, LONDON, W4 3ET
Works to trees within a Conservation Area- to fell to 2 lime trees - fell to ground an al…
P/2024/0671
2024 Approved
145 PARK ROAD, CHISWICK, W4 3EX
Works to tree in a conservation area: T1 Ginkgo tree: Reduce by approx. 2-3m from the hei…
P/2024/0647
2024 Withdrawn
12 CROFTON AVENUE, CHISWICK, W4 3EW
Works to trees in a Conservation Area- Felling of T1 Robinia and T2 Sycamore trees and tr…
P/2024/0310
2023 Approved
REAR OF 11-13 HUNTINGDON GARDENS, CHISWICK, W4 3HX
Felling of a tree in a conservation area: T17 - False acacia - Fell to ground level due t…
P/2023/3761
2023 Approved
LAND ON ROUNDABOUT AT HUNTINGDON GARDENS, CHISWICK, W4 3HX
Works to a tree in a conservation area: T13 - Felling of dead cherry tree
P/2023/3760
2023 Withdrawn
91-93 BURLINGTON LANE, CHISWICK, LONDON, W4 3ET
Conversion of one house into two and erection of single storey rear extension
P/2023/3396
2023 Withdrawn
10 HUNTINGDON GARDENS, CHISWICK, LONDON, W4 3HX
T1 Located in No 10 Huntington - Reduce by approx. 3m laterally to reduce the overhang an…
P/2023/3444
2023 Approved
93 BURLINGTON LANE, CHISWICK, LONDON, W4 3ET
Works to a tree in a conservation area: rear garden T1 Bay x 1 (Laurus nobilis) to shape…
P/2023/2842
2023 Withdrawn
19 CROFTON AVENUE, CHISWICK, LONDON, W4 3EW
Erection of a single storey rear extension to the house
P/2023/2063
2022 Approved
15 CROFTON AVENUE, CHISWICK, LONDON, W4 3EW
Fell River Birch tree (T1) at front of property within a conservation area.
P/2022/3594
2016 Approved
5 STATION PARADE BURLINGTON LANE CHISWICK LONDON W4 3HD
Installation of a new shopfront to existing shop
P/2016/4344
2016 Approved
141 PARK ROAD CHISWICK LONDON W4 3EX
Works to a tree in a conservation area - Yew (T1) to reduce crown by 2-3m (50%)
P/2016/2149
2016 Approved
4B STATION PARADE BURLINGTON LANE CHISWICK LONDON W4 3HD
Re-submission of the previously approved planning permission to build a loft extension.
P/2016/1394
2016 Approved
149 PARK ROAD CHISWICK LONDON W4 3EX
Erection of a single storey rear extension to the house
P/2016/0436
2016 Approved
153 PARK ROAD CHISWICK LONDON W4 3EX
Works to trees within a conservation area T1 - Purple Leaf Plum, to fell to ground level…
P/2016/0326
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