148 Cardington Square, Hounslow, TW4 6AL Data via plota.co.uk

P/2025/3681 - Householder Applications Refused
Extensions & alterations

Proposal

Erection of a part first floor rear extension to the house. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
11 Dec 2025
✓
Validated
6 Feb 2026
✗
Refused
14 May 2026
✓
Appeal allowed
14 Aug 2026

Refused on 14 May 2026 · Last checked 19 Sept 2026

Documents 11

Decision & officer reports 3

PDF P-Appeal Decision P-Appeal Decision · 14 Aug 2026 View ↗ PDF DECTP3 P-Decision Notice · 14 May 2026 View ↗ PDF P-Delegated Report P-Delegated Report · 8 May 2026 View ↗

Plans & drawings 5

PDF P-Proposed Elevation P-Proposed Elevation · 23 Feb 2026 View ↗ PDF P-Proposed Plans P-Proposed Plans · 23 Feb 2026 View ↗ PDF Side elevation P-Proposed Elevation · 23 Feb 2026 View ↗ PDF Roof plan P-Proposed Plans · 23 Feb 2026 View ↗ PDF P-Location Plan P-Location Plan · 23 Feb 2026 View ↗

Application forms 1

PDF ApplicationFormRedacted.pdf P-Planning Application Form · 11 Dec 2025 View ↗

Other documents 2

PDF P-Published Fire Safety P-Published Fire Safety · 23 Feb 2026 View ↗ PDF P-Published Fire Safety P-Published Fire Safety · 23 Feb 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 Named permitted development rights are withdrawn here.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 312 m away: Hounslow Heath
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 287 m away: Expansion of Heathrow Airport (Third Runway), at pre-application; 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.

Sales history 1

Last sold for £417,000 in December 2016. Semi-detached house, freehold.

16 December 2016£417,000

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

Building

Floor area72 m² (775 sq ft)
Energy ratingD (55 out of 100), could reach C
PropertySemi-detached 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 January 2016, 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

18 May 2026Approved

18 Cardington Square, Hounslow,TW4 6AH

Erection of roof extension and a two storey side and single storey rear extensio...

P/2026/1410

Nearby new applications

12 Oct 2026Pending

19 Marnell Way,Hounslow,TW4 7LZ

Certificate of lawfulness for the proposed erection of a rear roof extension wit...

P/2026/2892
8 Oct 2026Pending

Unit B, Heathrow Corporate Park, Green Lane, Hounslow, TW4 6ER

Installation of new and replacement external mechanical and electrical infrastru...

P/2026/2763
8 Oct 2026Pending

51 Salisbury Road,Hounslow,TW4 7NW

Retrospective application for the erection of a single storey building accommoda...

P/2026/2857
6 Oct 2026Pending

Sargents Court, 375 Staines Road, Hounslow, TW4 5AP

Planning obligation to modify the affordable housing obligations contained withi...

P/2026/2822
5 Oct 2026Pending

120 Hinton Avenue, Hounslow, TW4 6AP

Non Material amendment to allow the increase in height of the outbuilding with a...

P/2026/2820
2 Oct 2026Pending

97 Beavers Crescent, Hounslow, TW4 6EU

(GS877147507) Erection of part single storey side and rear extension to the hous...

P/2026/2750

Important details

Council
Hounslow
Application type
Householder Applications
Postcode
TW4 6AL
Received
11 Dec 2025
Validated
6 Feb 2026
Ward
Hounslow West
Case officer
Show
Decision date
14 May 2026
Appeal
Allowed · 14 Aug 2026 · Written Representations · Inspectorate case 6011484 ↗
Applicant
Show

How this decision compares

Decided in 97 days from validation, 43 days slower than Hounslow's median of 54 for extensions. Refused, as 19% of extensions here are.

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
24 Feb 2026
Comments by
17 Mar 2026
Statutory expiry
3 Apr 2026

Historical activity at this location

28 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2025 Approved
Certificate of lawfulness proposed for a hip to gable conversion and erection of a rear r…
P/2025/3510
2020 Approved
Certificate of lawfulness for proposed detached outbuilding in rear garden.
P/2020/1492
2019 Approved
Ground floor rear extension 6.0 metres deep, maximum height of 3.0 metres, 3.0 metres hig…
PA/2019/0556
Within ~100m

Nearby activity

2025 Approved
46 Hinton Avenue, Hounslow, TW4 6AR
Ground floor rear extension 6.00 metres deep, maximum height 3.20 metres, 2.90 metres hig…
PA/2025/1403
2025 Approved
46 Hinton Avenue, Hounslow, TW4 6AR
Ground floor rear extension 6.00 metres deep, maximum height 3.20 metres, 2.90 metres hig…
PA/2025/0939
2025 Approved
19 Cardington Square, Hounslow, TW4 6AH
Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 3.00 metres…
PA/2025/0397
2024 Refused
146 Cardington Square, Hounslow, TW4 6AL
Erection of a porch extension.
P/2024/3832
2024 Approved
134 CARDINGTON SQUARE, HOUNSLOW, TW4 6AL
Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 3.00 metres…
PA/2024/0228
2023 Approved
12 HINTON AVENUE, HOUNSLOW, TW4 6AR
Ground floor rear extension 6.00 metres deep, maximum height of 3.30 metres, 3.00 metres…
PA/2023/3899
2023 Approved
20 HINTON AVENUE, HOUNSLOW, TW4 6AR
Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 3.00 metres…
PA/2023/3222
2023 Refused
112 CARDINGTON SQUARE, HOUNSLOW, TW4 6AL
Erection of a single storey side extension to the outbuilding
P/2023/1267
2023 Approved
154 CARDINGTON SQUARE, HOUNSLOW, TW4 6AL
Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 3.00 metres hig…
PA/2023/1097
2023 Refused
91 CARDINGTON SQUARE, HOUNSLOW, TW4 6AJ
Construction of outbuilding to be used for car storage and a dropped kerb
P/2023/0904
2023 Withdrawn
FLAT GROUND FLOOR 18 HINTON AVENUE, HOUNSLOW, TW4 6AR
Formation of a vehicular access to the front of the house
P/2023/0685
2023 Withdrawn
24 HINTON AVENUE, HOUNSLOW, TW4 6AR
Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.95 metres…
PA/2023/0038
2022 Refused
8 CARDINGTON SQUARE, HOUNSLOW, LONDON BOROUGH OF HOUNSLOW, TW4 6AH
Erection of a single-storey side extension to the house
P/2022/2898
2022 Approved
44 HINTON AVENUE, HOUNSLOW, TW4 6AR
Erection of a detached outbuilding for use as a gym and store in the rear end of the gard…
P/2022/2846
2022 Approved
122 CARDINGTON SQUARE, HOUNSLOW, TW4 6AL
Erection of a single storey detached outbuilding to the rear of the house
P/2022/1454
2022 Refused
91 CARDINGTON SQUARE, HOUNSLOW, TW4 6AJ
Construction of outbuilding to be used for car storage and a dropped kerb
P/2022/1100
2022 Refused
44 HINTON AVENUE, HOUNSLOW, TW4 6AR
Erection of a single storey outbuilding for gym and store use
P/2022/0033
2020 Approved
44 HINTON AVENUE, HOUNSLOW, TW4 6AR
Erection of part single storey side extension to the house.
P/2020/3622
2020 Refused
24 HINTON AVENUE, HOUNSLOW, TW4 6AR
Ground floor rear extension 6 metres deep, maximum height of 4 metres, 3 metres high to t…
PA/2020/0801
2020 Approved
122 CARDINGTON SQUARE, HOUNSLOW, TW4 6AL
Ground floor rear extension 6 metres deep, maximum height 4 metres, 3 metres high to the…
PA/2020/0012
2016 Withdrawn
8 CARDINGTON SQUARE HOUNSLOW TW4 6AH
Erection of single storey side extension to the house
P/2016/4404
2016 Refused
40 HINTON AVENUE HOUNSLOW LONDON TW4 6AR
Ground floor rear extension 6m deep, 3m high to the eaves with the maximum height of 3m.
PA/2016/4420
2016 Approved
38 HINTON AVENUE HOUNSLOW LONDON TW4 6AR
Ground floor rear extension 6m deep, 3m high to the eaves with the maximum height of 3m.
PA/2016/4421
2016 Refused
83 CARDINGTON SQUARE HOUNSLOW TW4 6AJ
Ground floor rear extension 6 metres deep, maximum height of 4 metres, 3 metres high to t…
PA/2016/3784
2016 Refused
108 CARDINGTON SQUARE HOUNSLOW TW4 6AJ
Retrospective application for the erection of a single storey rear extension to the house.
P/2016/1473
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

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.