111 Byron Avenue, Hounslow, TW4 6LU Data via plota.co.uk

P/2026/1726 - Lawful Development Certificate (Proposed) Approved
Extensions & alterations

Proposal

Certificate of lawfulness for the proposed erection of a detached outbuilding in the rear garden. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
10 Jun 2026
✓
Approved
4 Aug 2026

Approved on 4 Aug 2026 · Last checked 18 Sept 2026

Documents 7

Decision & officer reports 2

PDF DECLEUD P-Decision Notice · 4 Aug 2026 View ↗ PDF P-Delegated Report P-Delegated Report · 3 Aug 2026 View ↗

Plans & drawings 2

PDF P-Location Plan P-Location Plan · 10 Jun 2026 View ↗ PDF P-Proposed Elevation P-Proposed Elevation · 10 Jun 2026 View ↗

Application forms 1

PDF P-Planning Application Form P-Planning Application Form · 10 Jun 2026 View ↗

Other documents 2

PDF P-Proposed Site P-Proposed Site · 10 Jun 2026 View ↗ PDF P-Proposed Block P-Proposed Block · 10 Jun 2026 View ↗

All documents on the council site ↗

Site constraints 7

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 Named permitted development rights are withdrawn here.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 ↗
Local nature reserve 204 m away: Cranebank
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
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
National infrastructure project 1518 m away: M4 Junctions 3 to 12 Smart Motorway; Inside the Hounslow built-up area; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building 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 area103 m² (1,109 sq ft)
Energy ratingE (52 out of 100), could reach B
PropertyMid-terrace house, 5 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in December 2025, 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

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Important details

Council
Hounslow
Application type
Lawful Development Certificate (Proposed)
Postcode
TW4 6LU
Received
10 Jun 2026
Validated
10 Jun 2026
Ward
Cranford
Case officer
Show
Decision
Grant
Decision date
4 Aug 2026
Applicant
Show

How this decision compares

Decided in 55 days from validation, about the council's usual 54 days. Approved, as 81% of extensions here are.

78%decided within 8 weeks
81%approved
920decided in the last year

Plota live figures for extensions 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
10 Jun 2026
Statutory expiry
5 Aug 2026

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
99 Chaucer Avenue, Hounslow, TW4 6NA
Ground floor rear extension 6.00 metres, maximum height 3.40 metres, 2.90 metres high to…
PA/2025/3620
2025 Withdrawn
107 Chaucer Avenue, Hounslow, TW4 6NA
Certificate
P/2025/2556
2025 Approved
47 Clevedon Gardens, Hounslow, TW5 9TT
Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 2.70 metres hig…
PA/2025/0245
2024 Withdrawn
50 Meadowbank Gardens, Hounslow, TW5 9TU
Erection of a double storey rear extension and ground floor side infill to the house
P/2024/1660
2023 Refused
81 BYRON AVENUE, HOUNSLOW, TW4 6LU
Change of use from a single family house (Use Class C3) to a House in Multiple Occupation…
P/2023/2551
2022 Approved
118 BYRON AVENUE, HOUNSLOW, TW4 6LY
Ground floor rear extension 6.0 metres deep, maximum height 3.00 metres, 2.95 metres high…
PA/2022/2888
2022 Refused
128 BYRON AVENUE, HOUNSLOW, TW4 6LY
Erection of a first floor rear extension
P/2022/0177
2021 Withdrawn
128 BYRON AVENUE, HOUNSLOW, TW4 6LY
Erection of a part first floor rear extension
P/2021/4457
2021 Withdrawn
128 BYRON AVENUE, HOUNSLOW, TW4 6LY
First floor rear extension
P/2021/3455
2021 Refused
128 BYRON AVENUE, HOUNSLOW, TW4 6LY
Erection of first floor rear extension
P/2021/0739
2021 Withdrawn
128 BYRON AVENUE, HOUNSLOW, TW4 6LY
Erection of a first floor rear extension
P/2021/0928
2020 Withdrawn
105 BYRON AVENUE, HOUNSLOW, TW4 6LU
Erection of a detached bungalow at the rear garden of 105 Byron Avenue
P/2020/1270
2020 Approved
105 BYRON AVENUE, HOUNSLOW, TW4 6LU
Ground floor rear extension 4.05 metres deep, maximum height of 2.96 metres, 2.96 metres…
PA/2020/1276
2020 Approved
115 BYRON AVENUE, HOUNSLOW, TW4 6LU
Ground floor rear extension 6 metres deep, maximum height of 3.45 metres, 2.8 metres high…
PA/2020/1080
2019 Refused
125 BYRON AVENUE, HOUNSLOW, TW4 6LU
Retrospective application for the conversion of the house into a 5 person House of Multip…
P/2019/3488
2019 Approved
103 CHAUCER AVENUE, HOUNSLOW, TW4 6NA
Ground floor rear extension 6.0 metres maximum height 3.0 metres, 2.85 metres high to the…
PA/2019/3076
2019 Approved
64A MEADOWBANK GARDENS, HOUNSLOW, TW5 9TU
Erection of a first floor side extension
P/2019/1524
2018 Approved
93 BYRON AVENUE HOUNSLOW TW4 6LU
Ground floor rear extension 6 metres deep, maximum height of 2.99 metres, 2.40 metres hig…
PA/2018/0766
2018 Approved
110 BYRON AVENUE HOUNSLOW TW4 6LY
Ground floor rear extension 6 metres deep, maximum height of 3 metres, 3 metres high to t…
PA/2018/0449
2016 Approved
109 BYRON AVENUE HOUNSLOW TW4 6LU
Ground floor rear extension 6 metres deep, maximum height of 4 metres, 3 metres high to t…
PA/2016/4330
2016 Approved
121 BYRON AVENUE HOUNSLOW LONDON TW4 6LU
Ground floor rear extension 6m deep, 2.5m high to the eaves with the maximum height of 3m.
PA/2016/3995
2016 Approved
87 BYRON AVENUE HOUNSLOW TW4 6LU
Erection of a single storey detached outbuilding in the rear garden of the house
P/2016/2767
2016 Approved
87 BYRON AVENUE HOUNSLOW LONDON TW4 6LU
Ground floor rear extension 6m deep, 3m high to the eaves with the maximum height of 3m.
PA/2016/2736
2025 Approved
109 Berkeley Avenue, Hounslow, TW4 6LD
Certificate of lawfulness for the existing single storey rear extension and detached outb…
P/2025/3404
2025 Approved
47 Clevedon Gardens, Hounslow, TW5 9TT
Certificate of lawfulness proposed for the erection of a detached single storey outbuildi…
P/2025/1933
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

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.