Flat 2 and 3, 96 Thornton Avenue, Chiswick ,London, W4 1QQ Data via plota.co.uk

P/2026/1785 - PF-Full Applications Approved
Change of useNew homes

Proposal

Retrospective conversion of first and second floor flats into one self-contained flat. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
16 Jun 2026
✓
Validated
8 Jul 2026
✓
Approved
21 Aug 2026

Approved on 21 Aug 2026 · Last checked 15 Sept 2026

Documents 9

Decision & officer reports 1

PDF DECTP2 P-Decision Notice · 21 Aug 2026 View ↗

Statements & assessments 1

PDF Planning Statement P-Planning Statement · 16 Jun 2026 View ↗

Plans & drawings 5

PDF LocationPlan.pdf P-Location Plan · 16 Jun 2026 View ↗ PDF Existing floor plans P-Existing Plans · 16 Jun 2026 View ↗ PDF Existing block plan P-Existing Block · 16 Jun 2026 View ↗ PDF Proposed and existing elevation P-Proposed Elevation · 16 Jun 2026 View ↗ PDF Proposed floor plans P-Proposed Plans · 16 Jun 2026 View ↗

Application forms 1

PDF ApplicationFormRedacted.pdf P-Planning Application Form · 16 Jun 2026 View ↗

Other documents 1

PDF Fire safety P-Published Fire Safety · 16 Jun 2026 View ↗

All documents on the council site ↗

Site constraints 13

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 ↗
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 Named permitted development rights are withdrawn here.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.
National infrastructure project: Thames Tideway Tunnel
The site is inside 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 ↗
Archaeological priority area
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 ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Conservation area 13 m away: Chiswick High Road
The edge of the area; work outside it can still affect its setting.
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 ↗
Also on the record
7 listed buildings within 150 m; Inside the Hounslow built-up area; Public transport access: PTAL 5 (very good), TfL 2023, for the 100 m square; Town centre 8 m away: Chiswick; Designated open space 45 m away; Open access land 45 m away: Access Land - Combined Open Country, Registered Common Land and Section 16 Dedicated Land. MoD Byelaw, Section 28 Exclusions, Racecourses and Aerodromes and ECP Margin have been removed..
Not affected
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.

Building

Floor area218 m² (2,347 sq ft)
Energy ratingD (63 out of 100), could reach C
PropertyMid-terrace 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 March 2026, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Hounslow
Application type
PF-Full Applications
Postcode
W4 1QQ
Received
16 Jun 2026
Validated
8 Jul 2026
Ward
Chiswick Homefields
Case officer
Show
Decision
Approved
Decision date
21 Aug 2026
Applicant
Show

How this decision compares

Decided in 44 days from validation, 12 days faster than Hounslow's median of 56 for changes of use. Approved, as 52% of changes of use here are.

62%decided within 8 weeks
52%approved
102decided in the last year

Plota live figures for changes of use 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
8 Jul 2026
Comments by
29 Jul 2026
Statutory expiry
2 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
Mulliner House, Flanders Road, Chiswick, London, W4 1NN
Erection of a single storey side extension and an additional floor at roof level with a r…
P/2025/3644
2024 Approved
8 Flanders Road, Chiswick, London, W4 1NG
Replacement of the front door set, front wall, gate and tiles along the path to the front…
P/2024/3575
2024 Approved
Mulliner House,Flanders Road,Chiswick,W4 1NN
Works to trees in a Conservation Area - G1- 3 X Maple prune clear of building to allow 1…
P/2024/3506
2024 Approved
8 FLANDERS ROAD, CHISWICK, W4 1NG
Erection of a rear roof extension with one rear roof window and one front roof window, de…
P/2024/0859
2023 Approved
27 THORNTON AVENUE, CHISWICK, W4 1QE
Replacement of the house's existing front and rear windows and front roof light, two stor…
P/2023/3042
2023 Approved
FLAT GROUND FLOOR 31 MAYFIELD AVENUE, CHISWICK, LONDON, W4 1PN
Erection of a single storey side and rear wrap around extension
P/2023/0856
2022 Approved
31 MAYFIELD AVENUE, CHISWICK, W4 1PN
Conversion of two flats into one single family house.
P/2022/4016
2022 Approved
4 FLANDERS ROAD, CHISWICK, W4 1NG
Works to four trees in rear garden within a conservation area. Apple (T1) crown reduce he…
P/2022/3561
2021 Approved
4 FLANDERS ROAD, CHISWICK, LONDON, W4 1NG
Erection of single storey rear infill extension, replacement of uPVC windows with origina…
P/2021/4581
2021 Approved
MULLINER HOUSE FLANDERS ROAD, CHISWICK, W4 1NN
T1 Norway Maple. Crown reduce close to previous prune points. Height reduce 2m Spread 1.5…
P/2021/2577
2021 Approved
49 THORNTON AVENUE, CHISWICK, W4 1QF
Addition of one oriel window and aluminium sliding doors to existing rear extension.
P/2021/1998
2021 Refused
FLAT SECOND FLOOR 96 THORNTON AVENUE, CHISWICK, LONDON, W4 1QQ
Erection of railing with privacy screens around a flat roof of existing back addition to…
P/2021/1522
2021 Approved
86 THORNTON AVENUE, CHISWICK, LONDON, W4 1QQ
Erection of a single storey side extension to the ground floor flat
P/2021/0734
2021 Approved
49 THORNTON AVENUE, CHISWICK, LONDON, W4 1QF
Addition of two oriel windows to the First Floor Rear Elevation.
P/2021/0479
2021 Approved
49 THORNTON AVENUE, CHISWICK, LONDON, W4 1QF
Erection of a single storey side and rear extension to the house with roof lights.
P/2021/0481
2020 Refused
33 MAYFIELD AVENUE, CHISWICK, LONDON
Erection of rear roof extension with one front roof window to the upper floor flat
P/2020/3801
2020 Approved
70 THORNTON AVENUE, CHISWICK, W4 1QQ
Erection of a single storey part side and rear extension to the existing single family ho…
P/2020/3348
2020 Approved
27 MAYFIELD AVENUE, CHISWICK, W4 1PN
Demolition of existing rear shed, erection of a rear outbuilding with associated raised d…
P/2020/2108
2020 Approved
FLAT FIRST FLOOR 98B THORNTON AVENUE, CHISWICK, LONDON, W4 1QQ
Erection of a rear roof extension to first floor flat
P/2020/2024
2020 Withdrawn
FLAT FIRST FLOOR 98 THORNTON AVENUE, CHISWICK, W4 1QQ
Erection of a rear roof extension to first floor flat
P/2020/1860
2017
FLAT A 100 TURNHAM GREEN TERRACE CHISWICK LONDON W4 1QN
Increase width of dormer to rear of property and the installation of two rooflights to fr…
P/2017/2251
2016 Refused
86 THORNTON AVENUE CHISWICK LONDON W4 1QQ
Erection of rear extension at first and second floors
P/2016/2811
2016 Approved
82 TURNHAM GREEN TERRACE CHISWICK LONDON W4 1QN
Erection of a rear extension to first floor flat and a rear roof extension to the second…
P/2016/2503
2016 Approved
34 MAYFIELD AVENUE CHISWICK LONDON W4 1PW
Details of construction method statement submitted pursuant to condition 7 of planning pe…
P/2016/1393
2016 Withdrawn
86A THORNTON AVENUE CHISWICK LONDON W4 1QQ
Erection of a first and second floor rear extension with enlargement of external stairwel…
P/2016/0750
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

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.