14-16, Stamford Brook Avenue, Chiswick, London, W6 0YD Data via plota.co.uk

P/2026/1277 - Major Housing 10 units or more REGISTERED: Under Assessment

Proposal

Erection of a part two storey front extension, side extension and rear extension. Erection of a third floor level. Installation of external balconies and solar panels to allow the conversion of the existing office building to 19 self-contained residential units with associated communal amenity space, landscaping, disabled car parking, cycle and refuse storage following part demolition of the existing building. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
28 Apr 2026
✓
Validated
9 Jun 2026
Decision
Target date was 8 Sept 2026

Under consideration

No decision has been issued yet. Plota predicted a decision soon after comments close on 10 Sept 2026; it is now day 142.

The consultation period closed on 10 Sept 2026.

Documents 55

Statements & assessments 23

PDF Updated received 13/08/2026 P-Flood Risk Assessment · 13 Aug 2026 View ↗ PDF BNG Metric P-Biodiversity credits details · 15 Jun 2026 View ↗ PDF ATZ P-Statement Other · 15 Jun 2026 View ↗ PDF Acoustic assessment report P-Published Noise Assessment · 15 Jun 2026 View ↗ PDF Drainage layout P-Drainage documentation · 2 Jun 2026 View ↗ PDF P-Heritage impact statement P-Heritage impact statement · 2 Jun 2026 View ↗ PDF Car park Management plan P-Statement Other · 2 Jun 2026 View ↗ PDF Demolition and Construction Method statement P-Statement Other · 2 Jun 2026 View ↗ PDF P-Drainage documentation P-Drainage documentation · 2 Jun 2026 View ↗ PDF Neighbouring Privacy Assessment P-Statement Other · 2 Jun 2026 View ↗ PDF Financial viability assessment P-Statement Other · 2 Jun 2026 View ↗ PDF BNG Assessment P-Biodiversity credits details · 2 Jun 2026 View ↗ PDF Waste Management plan P-Statement Other · 2 Jun 2026 View ↗ PDF Superseeded Flood Risk Assessment P-Rejected Plans · 2 Jun 2026 View ↗ PDF Contamination report P-Statement Other · 2 Jun 2026 View ↗ PDF Air Quality Assessment Report.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF BREEAM Pre-Assessment Methodology.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF Breeam Pre-Assessment Report.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF Energy and Sustainability Report.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF Overheating Assessment Report.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF Planning Statement_14 to 16 Stamford Brook Avenue.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF Stamford Brook Mews Chiswick_Transport Statement_April 2026_Revised Issue.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF Stamford Brook Mews_Planning Application_Design and Access Statement_REV 03.pdf P-Proposed Other · 28 Apr 2026 View ↗

Plans & drawings 20

PDF Ground flr & Second flr (Acoustic) P-Proposed Plans · 15 Jun 2026 View ↗ PDF Ground flr & Second flr (Acoustic) P-Proposed Plans · 15 Jun 2026 View ↗ PDF 109_A-080_REV 01_Site Location Plan.pdf P-Location Plan · 28 Apr 2026 View ↗ PDF 109_A-090_REV 01_Existing Site Plan.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-095_REV 04_Proposed Site Plan.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-100_REV 01_Existing Ground Floor Plan.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-101_REV 01_Existing 1st Floor Plan.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-102_REV 01_Existing 2nd Floor Plan.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-200_REV 00_Existing Elevations.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-103_REV 01_Existing Roof Plan.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-110_REV 09_Proposed Ground Floor Plan.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-111_REV 07_Proposed First Floor Plan.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-112_REV 07_Proposed Second Floor Plan.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-113_REV 07_Proposed Third Floor Plan.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-114_REV 07_Proposed Roof Plan.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-210_REV 05-Proposed Elevations 1 of 2.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-211_REV 05-Proposed Elevations 2 of 2.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-220_REV 05-Proposed Site Elevations.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-310_REV 04-Proposed Sections.pdf P-Proposed Other · 28 Apr 2026 View ↗ PDF 109_A-320_REV 02-Proposed Site Sections.pdf P-Proposed Other · 28 Apr 2026 View ↗

All documents on the council site ↗

Site constraints 8

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 ↗
Stamford Brook 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.
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 ↗
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 ↗
7 listed buildings within 150 m
Nearest: The Brook, Grade II, 44 m away · 7 Grade II
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.
Show all 7 with distances
Historic England ↗
Also on the record
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 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.

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Important details

Council
Hounslow
Application type
Major Housing 10 units or more
Postcode
W6 0YD
Received
28 Apr 2026
Validated
9 Jun 2026
Ward
Chiswick Homefields
Case officer
Show
Applicant
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Decision outlook

Day 142, past the statutory target. 83% of changes of use in Hounslow are decided within thirteen weeks; extensions of time are common, and the council need not decide on the day. Last seen undecided on 28 Oct 2026.

Day 14251 days past the 91-day target
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 →

Consultation & key dates

Consultation
15 Jun 2026
Comments by
10 Sept 2026
Site or press notice
25 Jun 2026
Statutory expiry
8 Sept 2026
Hounslow
Planning Authority Score
2.1/10
Poor
#268 of 296 councils
Relevant to this application:
Major dwellings

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