42 Byron Avenue, Hounslow, TW4 6LX Data via plota.co.uk

PA/2026/1798 - Prior Approval Larger Home Extension Approved
Extensions & alterations

Proposal

Ground floor rear extension 6.00 metres deep, maximum height of 3.30 metres, 2.80 metres high to the eaves Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
16 Jun 2026
✓
Approved
27 Jul 2026

Approved on 27 Jul 2026 · Last checked 17 Sept 2026

Documents 9

Decision & officer reports 2

PDF PANN P-Decision Notice · 27 Jul 2026 View ↗ PDF P-Delegated Report P-Delegated Report · 24 Jul 2026 View ↗

Plans & drawings 5

PDF A.02 EXISTING FLOOR PLANS .pdf P-Existing Plans · 16 Jun 2026 View ↗ PDF A.03 EXISTING ELEVATIONS.pdf P-Existing Elevation · 16 Jun 2026 View ↗ PDF A.04 PROPOSED FLOOR PLANS.pdf P-Proposed Plans · 16 Jun 2026 View ↗ PDF A.05 PROPOSED ELEVATIONS.pdf P-Proposed Elevation · 16 Jun 2026 View ↗ PDF A.06 PROPOSED BLOCK PLAN.pdf P-Proposed Site · 16 Jun 2026 View ↗

Application forms 1

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

Other documents 1

PDF A.01 SITE LOCATION.pdf P-Proposed Site · 16 Jun 2026 View ↗

All documents on the council site ↗

Site constraints 6

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 Named permitted development rights are withdrawn here.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 292 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.
Also on the record
National infrastructure project 1588 m away: M4 Junctions 3 to 12 Smart Motorway; Inside the Hounslow built-up area; Public transport access: PTAL 1b (very 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 area100 m² (1,076 sq ft)
Energy ratingE (54 out of 100), could reach C
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 April 2020, 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
Prior Approval Larger Home Extension
Postcode
TW4 6LX
Received
16 Jun 2026
Validated
16 Jun 2026
Ward
Cranford
Case officer
Show
Decision
Prior Approval is Not Required
Decision date
27 Jul 2026
Applicant
Show

How this decision compares

Decided in 41 days from validation, 13 days faster than Hounslow's median of 54 for extensions. 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
17 Jun 2026
Comments by
8 Jul 2026
Statutory expiry
28 Jul 2026

Historical activity at this location

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

Within ~100m

Nearby activity

2024 Approved
48 BYRON AVENUE, HOUNSLOW, TW4 6LX
Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 3.00 metres…
PA/2024/1256
2023 Refused
OUTBUILDING REAR OF 57 BYRON AVENUE, HOUNSLOW, TW4 6LT
Certificate of lawfulness for existing use of outbuilding as a separate self-contained dw…
P/2023/3241
2022 Approved
48 BYRON AVENUE, HOUNSLOW, TW4 6LX
Certificate of lawfulness for the erection of a rear roof extension with two front roof w…
P/2022/1801
2022 Approved
48 BYRON AVENUE, HOUNSLOW, TW4 6LX
Ground floor rear extension 6.00 metres deep, maximum height 2.93 metres, 2.93 metres hig…
PA/2022/1804
2022 Approved
13 BYRON AVENUE, HOUNSLOW, TW4 6LT
Ground floor rear extension 6.00 metres deep, maximum height 2.90 metres, 2.75 metres hig…
PA/2022/1400
2022 Approved
23 CHAUCER AVENUE, HOUNSLOW, TW4 6NA
Replacement single storey rear extension and roof with two additional roof windows
P/2022/0536
2021 Approved
39 CHAUCER AVENUE, HOUNSLOW, TW4 6NA
Ground floor rear extension 6.0 metres, maximum height 2.7 metres, 2.5 metres high to the…
PA/2021/0387
2020 Approved
10 BYRON AVENUE, HOUNSLOW, TW4 6LX
Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 3.00 metres hig…
PA/2020/1900
2019 Approved
41 CHAUCER AVENUE, HOUNSLOW, TW4 6NA
Ground floor rear extension 6m deep, 3m high to the eaves with the maximum height of 4m.
PA/2019/0939
2019 Approved
31 CHAUCER AVENUE, HOUNSLOW, TW4 6NA
Ground floor rear extension 6 metres deep, maximum height of 2.9 metres, 2.6 metres high…
PA/2019/0606
2018 Approved
17 BYRON AVENUE, HOUNSLOW, TW4 6LT
Certificate of Lawfulness for erection of a rear roof extension with three roof windows t…
P/2018/2637
2017 Approved
53 BYRON AVENUE HOUNSLOW TW4 6LT
Certificate of Lawfulness for erection of a rear roof extension with three roof windows t…
P/2017/3598
2017 Approved
49 BYRON AVENUE HOUNSLOW LONDON TW4 6LT
Ground floor rear extension 5.95m deep, 3m high to the eaves with the maximum height of 3…
PA/2017/2514
2016 Approved
45 CHAUCER AVENUE HOUNSLOW TW4 6NA
Ground floor rear extension 6.00m deep, with the maximum height of 3.60m and 3.00m high t…
PA/2016/3710
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.