26 Thornton Avenue,Chiswick,London,W4 1QG Data via plota.co.uk

Pending P/2026/1399 - Lawful Development Certificate (Proposed)
Extensions & alterations
Council
Hounslow 2.2/10
Date received
13 May 2026
Date validated
13 May 2026
Postcode
W4 1QG
Type
Lawful Development Certificate (Proposed)

Description

Certificate of Lawfulness for proposed enlargement of rear roof extension, erection of rear outrigger extension, and installation of two front roof windows. Data via plota.co.uk

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Other new applications on this street

Flat 2 and 3, 96 Thornton Avenue, Chiswick ,London, W4 1QQ

Retrospective planning application for the amalgamation of first and second floo...

P/2026/1785 - 8 Jul 2026

Nearby new applications

Flat 2 and 3, 96 Thornton Avenue, Chiswick ,London, W4 1QQ

Retrospective planning application for the amalgamation of first and second floo...

P/2026/1785 - 8 Jul 2026

6 Stamford Brook Avenue,Chiswick,London,W6 0YD

Enlargement of the existing basement including the formation of a rear lightwell...

P/2026/1975 - 8 Jul 2026

98 Devonshire Road,Chiswick,W4 2HS

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

P/2026/2006 - 7 Jul 2026

19 Cranbrook Road,Chiswick,London,W4 2LH

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

P/2026/1925 - 7 Jul 2026

9 Rupert Road, Chiswick, London, W4 1LU

Listed Building Consent for the installation of matching designed replacement ti...

P/2026/1899 - 7 Jul 2026

9 Rupert Road, Chiswick, London, W4 1LU

Installation of matching designed replacement timber framed windows with slimlin...

P/2026/1961 - 7 Jul 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
7A, 7B & 7C Ennismore Avenue, Chiswick, London, W4 1SE
Installation of a matching replacement first floor front door (with fanlights), ground fl…
P/2025/2753
2025
Flat 1, 23 Ennismore Avenue, Chiswick, London, W4 1SE
Erection of a single storey rear extension with fully glazed projecting roof light follow…
P/2025/2803
2025 Refused
23 Ennismore Avenue, Chiswick, London, W4 1SE
Erection of ground floor rear extension, increase in height of existing garden facing par…
P/2025/1724
2024 Refused
16 Upham Park Road, Chiswick, London, W4 1PG
Installation of air source heat pump in the rear garden of the house.
P/2024/2062
2024 Approved
25 ENNISMORE AVENUE, CHISWICK, W4 1SE
Retrospective application for the erection of a single storey rear extension and associat…
P/2024/0693
2024 Approved
38 UPHAM PARK ROAD, CHISWICK, W4 1PG
Erection of a single front roof extension replacing existing front dormers, erection of a…
P/2024/0724
2024 Approved
112A CHISWICK HIGH ROAD, CHISWICK, W4 1PU
Replacement of existing timber single glazed windows with double glazed UPVC sash windows
P/2024/0442
2023 Approved
27 THORNTON AVENUE, CHISWICK, W4 1QE
Replacement of the house's existing front and rear windows and front roof light, two stor…
P/2023/3042
2023 Withdrawn
25 ENNISMORE AVENUE, CHISWICK, W4 1SE
Demolition of rear extension and construction of rear extension at Ground floor level and…
P/2023/3190
2023 Refused
FLAT FIRST AND SECOND FLOORS 1 UPHAM PARK ROAD, CHISWICK, LONDON, W4 1PQ
Installation of rear sliding doors to the first floor flat
P/2023/1926
2023 Approved
GROUND FLOOR FLAT 13 THORNTON AVENUE, CHISWICK, W4 1QE
Erection of a single storey side and rear extension following the conversion from two fla…
P/2023/0693
2022 Approved
28 THORNTON AVENUE, CHISWICK, W4 1QG
Erection of a single storey rear and rear infill extension to the house.
P/2022/4025
2022 Approved
112 CHISWICK HIGH ROAD, CHISWICK, W4 1PU
Installation of a new shopfront
P/2022/3281
2022 Approved
19 THORNTON AVENUE, CHISWICK, W4 1QE
Erection of single storey side, rear infill and rear extension to the house.
P/2022/2432
2022 Approved
20 UPHAM PARK ROAD, CHISWICK, W4 1PG
Erection of a single storey rear extension and a front below ground extension with bin st…
P/2022/2000
2022 Approved
35 UPHAM PARK ROAD, CHISWICK, W4 1PQ
Erection of a rear roof extension incorporating a Juliet balcony and the installation of…
P/2022/0101
2021 Approved
20 MAYFIELD AVENUE, CHISWICK, LONDON, W4 1PW
Erection of single storey side and rear ground floor extension to the house
P/2021/4587
2021 Approved
4-6 THORNTON AVENUE, CHISWICK, LONDON, W4 1QG
Variation of condition 1 (Approved Plans) to propose a storage space beneath the front ga…
P/2021/3442
2021 Refused
25A UPHAM PARK ROAD, CHISWICK, LONDON, W4 1PQ
Erection of a single storey rear infill extension to the ground floor flat
P/2021/2246
2021 Approved
FLAT 2 15 ENNISMORE AVENUE, CHISWICK, W4 1SE
Replacement of existing door and sidelight with a white UPVC door and sidelight on first…
P/2021/2205
2016 Approved
24 THORNTON AVENUE CHISWICK LONDON W4 1QG
Refurbishemnt of existing side return with new glazed roof, new patio doors and brickwork…
P/2016/2763
2016 Approved
23 THORNTON AVENUE CHISWICK LONDON W4 1QE
Details of construction method statement submitted pursuant to condition 4 of planning pe…
P/2016/2633
2016 Approved
FLAT 3 15 ENNISMORE AVENUE CHISWICK LONDON W4 1SE
Erection of a rear roof extension to flat 3 with 2 roof windows to front elevation
P/2016/2478
2016 Approved
34 MAYFIELD AVENUE CHISWICK LONDON W4 1PW
Details of construction method statement submitted pursuant to condition 7 of planning pe…
P/2016/1393
2016 Withdrawn
116 CHISWICK HIGH ROAD CHISWICK LONDON W4 1PU
Change of use of the Basement from mini cab office to A3 and A5 for hot food cooking and…
P/2016/1237
Hounslow
Planning Authority Score
2.2/10
Poor
#260 of 292 councils
Relevant to this application:
Householder decisions

Hounslow is slower than most councils at deciding householder applications, ranking #198 out of 292. 46% of applications have the time limit extended, above the 40% national average. Hounslow is also one of the strictest councils - it refuses more householder applications than almost any other, with only 72% approved vs 90% nationally.

One of the strictest councils
only 72% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Hounslow decision performance
Based on MHCLG data, 2025
68%
Overall approval rate
Below avg (87%) #290 of 292
72%
Householder approved
Below avg (90%) #289 of 292
57%
Decided in 8 weeks
Below avg (64%) #198 of 292
46%
Extended time limit
Above avg (40%) #193 of 292
34%
Minor dwellings approved
89 decided (1-9 homes)
82%
Major dwellings approved
11 decided (10+ homes)
24%
Change of use approved
71 decided
1,284
Total decisions
407 refused in 2025
Source: MHCLG planning statistics · See full council rankings