23 Heathfield Gardens, Chiswick, London, W4 4JU Data via plota.co.uk

P/2025/3714 - Householder Applications Approved

Proposal

Erection of two storey side extension with a part single part two storey rear extension, following the demolition of the garage and the two storey rear extension. Replacement of the existing windows throughout with double glazed timber frame units, repositioning of the air source heat pump (ASHP) to rear garden. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
15 Dec 2025
✓
Approved
17 Apr 2026

Approved on 17 Apr 2026 · Last checked 4 Oct 2026

Documents 35

Decision & officer reports 2

PDF DECTP2 P-Decision Notice · 17 Apr 2026 View ↗ PDF P-Delegated Report P-Delegated Report · 16 Apr 2026 View ↗

Statements & assessments 5

PDF P-Published Noise Assessment P-Published Noise Assessment · 2 Feb 2026 View ↗ PDF 23 Heathfield Gardens_Sustainability Statement_091225.pdf P-Sustainability Statement · 15 Dec 2025 View ↗ PDF 23 Heathfield Gardens_Window Condition Survey.pdf P-Statement Other · 15 Dec 2025 View ↗ PDF 23 Heathfield Gardens_Design and access statement_141225.pdf P-Design and Access Statement · 15 Dec 2025 View ↗ PDF P-Heritage impact statement P-Heritage impact statement · 15 Dec 2025 View ↗

Plans & drawings 25

PDF 00_021_Proposed Side ElevationsC_250326 P-Proposed Elevation · 25 Mar 2026 View ↗ PDF 00_020_Proposed Front and Rear ElevationsC_240326 P-Proposed Elevation · 24 Mar 2026 View ↗ PDF 30_005_Existing Detailed Section_250226 P-Supporting Information · 27 Feb 2026 View ↗ PDF 30_001_Existing Window Elevations_250226 P-Supporting Information · 27 Feb 2026 View ↗ PDF 30_002_Proposed Window Elevations_250226 P-Supporting Information · 27 Feb 2026 View ↗ PDF 00_014_Proposed Roof PlanC_250226 P-Proposed Plans · 27 Feb 2026 View ↗ PDF 00_011_Proposed Ground PlanD_250226 P-Proposed Plans · 27 Feb 2026 View ↗ PDF 00_012_Proposed First PlanE_250226 P-Proposed Plans · 27 Feb 2026 View ↗ PDF 00_003_Existing Ground and First PlanB_250226 P-Existing Plans · 27 Feb 2026 View ↗ PDF LocationPlan.pdf P-Location Plan · 15 Dec 2025 View ↗ PDF SiteLocation.geojson P-Location Plan · 15 Dec 2025 View ↗ PDF 00_001_Location PlanA_091225.pdf P-Proposed Site · 15 Dec 2025 View ↗ PDF 00_002_Existing Site PlanA_091225.pdf P-Proposed Block · 15 Dec 2025 View ↗ PDF P-Rejected Plans P-Rejected Plans · 15 Dec 2025 View ↗ PDF 00_004_Existing Second and Roof PlanA_091225.pdf P-Existing Site · 15 Dec 2025 View ↗ PDF 00_005_Existing ElevationsA_091225.pdf P-Existing Elevation · 15 Dec 2025 View ↗ PDF 00_006_Existing SectionsA_091225.pdf P-Existing Sections · 15 Dec 2025 View ↗ PDF 00_010_Proposed Site PlanD_0912255.pdf P-Proposed Site · 15 Dec 2025 View ↗ PDF P-Proposed Plans P-Proposed Plans · 15 Dec 2025 View ↗ PDF P-Rejected Plans P-Rejected Plans · 15 Dec 2025 View ↗ PDF 00_013_Proposed Second PlanB_091225.pdf P-Proposed Plans · 15 Dec 2025 View ↗ PDF P-Rejected Plans P-Rejected Plans · 15 Dec 2025 View ↗ PDF P-Rejected Plans P-Rejected Plans · 15 Dec 2025 View ↗ PDF 00_025_Proposed SectionsB_091225.pdf P-Proposed Sections · 15 Dec 2025 View ↗ PDF P-Rejected Plans P-Rejected Plans · 15 Dec 2025 View ↗

Application forms 1

PDF ApplicationFormRedacted.pdf P-Planning Application Form · 15 Dec 2025 View ↗

Other documents 2

PDF Proposed Box Sashes P-Supporting Information · 27 Feb 2026 View ↗ PDF 23 Heathfield Gardens_Fire Safety Information_091225.pdf P-Published Fire Safety · 15 Dec 2025 View ↗

All documents on the council site ↗

Site constraints 8

Flood zone 2, rivers and sea
Medium chance: between a 1 in 100 and 1 in 1,000 annual chance from rivers, or 1 in 200 to 1 in 1,000 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 ↗
Wellesley Road conservation area
Also Wellesley Road. 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 ↗
National infrastructure project 994 m away: Thames Tideway Tunnel
The site is 994 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted.
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
Also on the record
Local nature reserve 475 m away: Gunnersbury Triangle; Inside the Hounslow built-up area; Public transport access: PTAL 4 (good), TfL 2023, for the 100 m square.
Not affected
Not green belt · No listed building at the site · No scheduled monument at the site

Checked on 2 November 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 £4,775,000 in July 2025. Detached house, freehold.

28 July 2025£4,775,000
30 September 2003£1,635,000

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

Building

Floor area306 m² (3,294 sq ft)
Energy ratingD (62 out of 100), could reach C
PropertyDetached house, 8 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in August 2021, 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

23 Jun 2026Approved

25 Heathfield Gardens, Chiswick, London, W4 4JU

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8 Jun 2026Approved

21 Heathfield Gardens,Chiswick,London,Hounslow,W4 4JU

Details of Construction Logistics Plan submitted pursuant to condition 4 of plan...

P/2026/1692
22 May 2026Withdrawn

25 Heathfield Gardens,Chiswick,London,Hounslow,W4 4JU

Rear LHS T1 Yew Common x 1 (Taxus baccata) This 8m mature yew tree has grown unb...

P/2026/1557

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50 Barrowgate Road,Chiswick,London,W4 4QY

Creation of vehicular access, including an opening in the existing front boundar...

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7 Grosvenor Court,Grosvenor Road,Chiswick,London,W4 4EF

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Important details

Council
Hounslow
Application type
Householder Applications
Postcode
W4 4JU
Received
15 Dec 2025
Validated
15 Dec 2025
Case officer
Show
Decision
Approved
Decision date
17 Apr 2026
Applicant
Show

How this decision compares

Decided in 123 days from validation, 67 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 →

Public comments

No public comments yet.

Read the comments on the council site ↗

Consultation & key dates

Consultation
2 Jan 2026
Comments by
30 Jan 2026
Site or press notice
9 Jan 2026
Statutory expiry
9 Feb 2026

Historical activity at this location

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

This property

Previous applications at this address

2025 Withdrawn
Works to trees within a conservation area - Cherry - Reduce by 2m Height and 1.5m Width.
P/2025/2607
2025 Refused
Five Day Notice: Cherry - Fell and plant a more suitable replacement tree.
P/2025/1906
Within ~100m

Nearby activity

2025 Refused
11 Burlington Gardens,Chiswick,W4 4LT
Erection of a replacement hipped roof with increase ridge height and side roof extension…
P/2025/3779
2025 Refused
11 Burlington Gardens, Chiswick, London, W4 4LT
Extension of existing basement, including two lightwells and associated access stairwells…
P/2025/2831
2025 Approved
7 Heathfield Gardens, Chiswick, London, W4 4JU
Reduce height up to 2.5 metres through selective thinning. Reduce sides by up to 2 metres…
P/2025/3081
2025 Approved
12 Heathfield Gardens, Chiswick, London, W4 4JY
Works to two trees within a conservation area. Rear garden, Eucalyptus (T1) re-pollard by…
P/2025/2764
2025 Approved
23 Burlington Gardens, Chiswick, London, W4 4LT
Works to tree in a Conservation Area - 1 X T1 Cherry (Prunus spp) reduce crown to the mos…
P/2025/1667
2024 Approved
Aintree Lodge, Watchfield Court Sutton Court Road, Chiswick, London, W4 4JS
Erection of a two storey replacement house with car and cycle parking, waste and recyclin…
P/2024/4338
2025 Approved
39 Heathfield Gardens,Chiswick,London,Hounslow,W4 4JU
Works to tree within a Conservation Area - T1 Ash - Crown Reduce by 6m to previous pollar…
P/2025/0983
2025 Withdrawn
5 Heathfield Gardens, Chiswick, London, W4 4JU
Work to trees within conservation, T1 Cherry - light reduction of the crown, T2 Apple - r…
P/2025/1190
2025 Approved
27 Sutton Lane North, Chiswick, London, W4 4LA
Erection of a single storey side extension and the enlargement and increase in height of…
P/2025/0194
2024 Approved
15 Burlington Gardens, Chiswick, London, W4 4LT
Works to Magnolia tree (T1) at front of property in a conservation area. Reduce crown and…
P/2024/3162
2024 Withdrawn
2 Burlington Gardens, Chiswick, London, W4 4LT
Erection of a air conditioning unit at ground floor level to the front of the house.
P/2024/3426
2024 Approved
29 Heathfield Gardens, Chiswick, London, W4 4JU
Erection of a single storey rear extension and demolition of the existing conservatory to…
P/2024/2347
2024 Approved
29 HEATHFIELD GARDENS, CHISWICK, W4 4JU
Formation of vehicle access and installation of hardstanding to the front of the house wi…
P/2024/1309
2024 Approved
19 BURLINGTON GARDENS, CHISWICK, W4 4LT
Works to Japanese Maple tree (T1) in rear garden in a conservation area. Reduce crown by…
P/2024/1312
2024 Approved
6 HEATHFIELD GARDENS, CHISWICK, LONDON, W4 4JY
Enlargement to the basement floor and the installation of a front and rear lightwell
P/2024/0028
2024 Approved
21 HEATHFIELD GARDENS, CHISWICK, LONDON, W4 4JU
Erection of a part single part double storey rear extension, replacement of windows from…
P/2024/0084
2023 Approved
WATCHFIELD COURT SUTTON COURT ROAD, CHISWICK, W4 4JS
Fell Hawthorn tree on site in conservation area
P/2023/3551
2023 Approved
1 SUTTON LANE NORTH, CHISWICK, W4 4LA
Erection of a rear roof extension with three front roof windows and two rear roof windows.
P/2023/2284
2023 Approved
1 SUTTON LANE NORTH, CHISWICK, W4 4LA
Erection of single storey rear infill extension, replacement of first floor rear window w…
P/2023/2283
2023 Approved
34 HEATHFIELD GARDENS, CHISWICK, LONDON, W4 4JX
Erection of single storey rear extension following demolition of existing conservatory. P…
P/2023/2491
2016 Approved
WATCHFIELD COURT SUTTON COURT ROAD CHISWICK LONDON W4 4JS
Works to trees within a conservation area - Deodar Cedar (T89) to reduce upper crown regr…
P/2016/3931
2016 Approved
23 BURLINGTON GARDENS CHISWICK LONDON W4 4LT
Mimosa Tree (T1) - reduce/ re frame crown by 2-3m, Willow Tree ( T2) - thin crown by 15%…
P/2016/3603
2016 Withdrawn
25 HEATHFIELD GARDENS CHISWICK LONDON W4 4JU
Works to a tree in a conservation area: Rear right T1 Bay x 1 Large, mature, multi stemme…
P/2016/2966
2016 Approved
21 BURLINGTON GARDENS CHISWICK LONDON W4 4LT
Replacement of existing front garden wall with brickwork wall to match existing finish.
P/2016/1332
2016 Approved
21 BURLINGTON GARDENS CHISWICK LONDON W4 4LT
Work to a tree in a conservation area
P/2016/1106
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

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.