41 Fairfax Road, Chiswick, London, W4 1EN Data via plota.co.uk

P/2026/2828 - Lawful Development Certificate (Proposed) REGISTERED: Under Assessment
Extensions & alterations

Proposal

Certificate of lawfulness proposed for a detached single storey outbuilding for use as a gym and storage in the rear garden. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
6 Oct 2026
Decision
Expected by 1 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 29 Nov 2026, from Hounslow's recent extensions.

Documents 3

Plans & drawings 1

PDF Existing and proposed floor plans, elevations, location plans and photos P-All in one Plans Proposed · 6 Oct 2026 View ↗

Application forms 2

PDF ApplicationFormRedacted.pdf P-Planning Application Form · 6 Oct 2026 View ↗ PDF Application Form P-Planning Application Form · 6 Oct 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 ↗
Bedford Park conservation area
Also Bedford Park (article 4). 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.
2 Article 4 directions
Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction · Article 4(2) directions for Bedford Park and Gunnersbury Conservation areas. Named permitted development rights are withdrawn here.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 ↗
38 listed buildings within 150 m
Nearest: 48, Priory Avenue W4, Grade II, 31 m away · 38 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 38 with distances
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.
Not affected
Not green belt · No scheduled monument at the site

Checked on 10 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 1

Last sold for £1,110,000 in July 2006. Terraced house, freehold.

28 July 2006£1,110,000

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

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Important details

Council
Hounslow
Application type
Lawful Development Certificate (Proposed)
Postcode
W4 1EN
Received
6 Oct 2026
Validated
6 Oct 2026
Ward
Chiswick Homefields
Case officer
Show
Applicant
Show

Decision outlook

Day 12 of the 56-day target. Hounslow usually decides extensions by day 54.

Day 1244 days to the 56-day target
78%decided within 8 weeks
81%approved
924decided in the last year

Plota live figures for extensions decided by Hounslow in the last twelve months, from validation. Hounslow decision record →

Consultation & key dates

Consultation
6 Oct 2026
Statutory expiry
1 Dec 2026

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
Enlargement of existing basement to the house.
P/2025/2667
Within ~100m

Nearby activity

2025 Approved
20 Priory Avenue, Chiswick, London, W4 1TY
Installation of a bike shed in the front garden to the house
P/2025/3395
2025 Approved
3 Addison Grove, Chiswick, London, W4 1EP
Erection of single storey detached outbuilding for use as garden room in the rear garden
P/2025/2809
2025 Approved
31 Fairfax Road, Chiswick, London, W4 1EN
Reinstatement of front elevation bay window and front dormer tiles. Replacement of front…
P/2025/3691
2025 Approved
7 Abinger Road, Chiswick, London, W4 1EY
Bay (T5) reduce overhanging branches by approximately 2 metres back to the property bound…
P/2025/3016
2025 Approved
31 Fairfax Road, Chiswick, London, W4 1EN
Alterations and enlargement to the rear dormer window of the house
P/2025/2705
2025 Refused
15 Abinger Road, Chiswick, London, W4 1EY
Enlargement of existing cellar to a single storey basement incorporating a front lightwel…
P/2025/2481
2025
32 Priory Avenue, Chiswick, London, W4 1TY
Listed Building Consent for the cleaning and repointing of external wall facades with the…
P/2025/3401
2025 Approved
48 Priory Avenue, Chiswick, London, W4 1TY
Works to Trees in Conservation Area. English Oak (T1). Pollard back to previous pollard p…
P/2025/2928
2025 Approved
9 Abinger Road, Chiswick, London, W4 1EY
Works to tree within a conservation area: Cherry (T2 and part of G3). Reduce height by ap…
P/2025/3003
2025 Approved
35 Fairfax Road, Chiswick, London, W4 1EN
Replacement of existing front garden wall and replacement of front windows to the house.
P/2025/2533
2025 Approved
15 Abinger Road, Chiswick, London, W4 1EY
Erection of a single storey side and rear extension, replacement and enlargement of exist…
P/2025/2412
2025 Approved
5 Fairfax Road, Chiswick, London, W4 1EN
Erection of conservatory and construction of a wine storage area under the floor of the c…
P/2025/1460
2025 Approved
5 Fairfax Road, Chiswick, London, W4 1EN
Listed building consent for the erection of conservatory and construction of a wine stora…
P/2025/1612
2025 Approved
20 Priory Avenue, Chiswick, London, W4 1TY
Works to three trees in rear garden within a conservation area. Common Lime (T1) Thin ove…
P/2025/1961
2025 Approved
18 Priory Avenue, Chiswick W4 1TY
Felling of Trachycarpus tree (T1) in rear garden within a conservation area
P/2025/1748
2024 Approved
18 Priory Avenue, Chiswick, London, W4 1TY
Enlargement of roof terrace.
P/2024/3711
2024 Approved
18 Priory Avenue, Chiswick, London, W4 1TY
Listed Building Consent - Enlargement of roof terrace.
P/2024/4019
2024 Refused
48 Priory Avenue, Chiswick, London, W4 1TY
Listed Building Consent for replacing the existing wooden pillars on the front gate with…
P/2024/3862
2024 Refused
48 Priory Avenue, Chiswick, London, W4 1TY
Replacing the existing wooden pillars on the front gate with two new brick pillars. Liste…
P/2024/3871
2024 Refused
18 Priory Avenue, Chiswick, London, W4 1TY
Listed Building Consent - Replacement of front fence with a palisade style fence.
P/2024/4016
2018 Approved
41 PRIORY AVENUE CHISWICK LONDON W4 1TZ
Single storey rear extension and side extensions, additional side and roof fenestration a…
P/2018/2115
2018 Approved
29 PRIORY AVENUE CHISWICK LONDON W4 1TZ
Details of Condition 4 (Materials) and Condition 5 (Joinery) submitted pursuant of planni…
P/2018/1749
2018 Approved
37 PRIORY AVENUE, CHISWICK, LONDON, W4 1TZ
Works to Silver Lime x 1 (Tilia) in the rear garden comprising of: Reduce crown to1.5mBel…
P/2018/2468
2018 Withdrawn
36 PRIORY AVENUE, CHISWICK, LONDON, W4 1TY
Replacement of the existing ground floor front bay window on a like for like basis
P/2018/2534
2018 Withdrawn
36 PRIORY AVENUE CHISWICK LONDON W4 1TY
Installation of new bay window on ground floor
P/2018/2215
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