149, Argyle Avenue, Whitton, Hounslow, TW3 2LP Data via plota.co.uk

PA26/3121 - General Permitted Development Extension Registered
Extensions & alterations

Proposal

Single storey rear extension (6m depth, 3m eaves height, 3.85m overall height) Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
8 Sept 2026
Decision
Expected by 20 Oct 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision between 21 Oct 2026 and 28 Oct 2026, from Richmond upon Thames's recent extensions.

Documents

View the documents on the council's website ↗

Site constraints 2

Air quality management area: Richmond 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 ↗
Also on the record
Inside the Richmond upon Thames built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 12 September 2026. Historic England, the Environment Agency, Natural England 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.

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Other new applications on this street

1 Sept 2026Pending

179 Argyle Avenue Whitton Hounslow TW3 2LP

Single storey rear extension at a maximum 6m depth and a maximum height of 4m wi...

PA26/3019
15 Apr 2026Approved

133, Argyle Avenue, Hounslow, TW3 2LL

P/2026/117 - Erection of a first floor side extension above the existing ground ...

PA26/1328

Nearby new applications

11 Sept 2026Pending

11 Collingwood Close Twickenham TW2 7AE

Ground floor rear extension. Front parking/new paving.

PA26/2486
11 Sept 2026Pending

11 St Stephens Road, Hounslow, TW3 2BQ

Works to trees within a conservation area. Rear garden. Cherry x1 - Cutback to b...

P/2026/2573
1 Sept 2026Pending

179 Argyle Avenue Whitton Hounslow TW3 2LP

Loft dormer following hip to gable roof extension including front roof lights

PA26/3029
1 Sept 2026Pending

1 Wyndham Crescent, Hounslow, Tw4 5hz

Conversion of existing detached outbuilding, located within the rear garden to a...

PA26/3011
2 Sept 2026Pending

53 St Stephens Road,Hounslow,TW3 2BJ

Works to tree within a conservation area. Cherry (T1). Reduce crown height by a...

P/2026/2471
1 Sept 2026Pending

179 Argyle Avenue Whitton Hounslow TW3 2LP

Single storey rear extension at a maximum 6m depth and a maximum height of 4m wi...

PA26/3019

Important details

Council
Richmond upon Thames
Application type
General Permitted Development Extension
Postcode
TW3 2LP
Received
8 Sept 2026
Validated
8 Sept 2026
Ward
Whitton Ward [WTT]
Case officer
Show
Target decision
20 Oct 2026
Applicant
Show
Agent
Glass House Architecture

Decision outlook

Day 6 of the 56-day target. Richmond upon Thames usually decides extensions by day 48.

Day 650 days to the 56-day target
79%decided within 8 weeks
87%approved
1,012decided in the last year

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

Consultation & key dates

Alt. reference
PP-15207393
Statutory expiry
2 Oct 2026

Historical activity at this location

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

This property

Previous applications at this address

2023 Approved
Hip to gable roof extension with flat roof rear dormer.
23/1661/PS192
2023 Approved
Single storey rear extension 3.4m in depth, 3.15m in height and 3m in height to eaves.
23/1694/PDE
Within ~100m

Nearby activity

2025 Approved
131 Argyle Avenue, Hounslow, TW3 2LL
Conversion of garage into a habitable room replacing garage door with single window. Repl…
P/2025/3803
2025 Approved
96 Whitton Waye Whitton Hounslow TW3 2LU
Front Porch
PA25/4120
2023 Approved
110 Argyle Avenue Whitton Hounslow TW3 2LS
single storey rear extension (5.00m depth, 3.00m eaves height, 3.00m overall height)
23/2613/PDE
2023 Approved
31 Nelson Gardens Whitton Hounslow TW3 3UJ
Proposed single storey rear extension with associated internal alterations
23/0923/HOT
2023 Refused
31 Nelson Gardens Whitton Hounslow TW3 3UJ
Single Storey Rear Extension (4.00m depth, 3.00m eaves height, 3.70m overall height)
23/0348/PDE
2022 Approved
79 Nelson Gardens Whitton Hounslow TW3 3UJ
First floor rear and side extensions.
22/3668/HOT
2022 Approved
94 Whitton Waye Whitton Hounslow TW3 2LU
Hip to gable loft conversion with rear dormer and installation of three roof lights at th…
22/1833/PS192
2022 Approved
151 Argyle Avenue Whitton Hounslow TW3 2LP
Part single storey rear extension and part first floor rear extension.
22/1509/HOT
2022 Approved
104 Whitton Waye Whitton Hounslow TW3 2LU
PROPOSED ROOF EXTENSION FOLLOWING HIP TO GABLE ROOF, REAR DORMER AND FRONT ROOF SLOP WIND…
22/1768/PS192
2021 Approved
104 Whitton Waye Whitton Hounslow TW3 2LU
Replacement single storey side extension in place of the existing side extension and stor…
21/3944/HOT
2021 Approved
39 Nelson Gardens Whitton Hounslow TW3 3UJ
Proposed outbuilding and all associated works
21/0050/PS192
2021 Approved
39 Nelson Gardens Whitton Hounslow TW3 3UJ
Proposed hip to gable loft conversion with rear dormer, floor plan redesign and all assoc…
21/0049/PS192
2020 Approved
35 Nelson Gardens Whitton Hounslow TW3 3UJ
Single-storey outbuilding at the end of rear garden
20/1679/PS192
2020 Approved
120 Argyle Avenue Whitton Hounslow TW3 2LS
Single-storey rear extension (6m depth, 2.57m eaves height, 3.59m maximum height).
20/1409/PDE
2019 Approved
135 ARGYLE AVENUE, HOUNSLOW, TW3 2LL
Ground floor rear extension 6 metres deep, maximum height of 2.8 metres, 2.8 metres high…
PA/2019/2568
2019 Approved
135 ARGYLE AVENUE, HOUNSLOW, TW3 2LL
Ground floor rear extension 6 metres deep, maximum height of 3 metres, 3 metres high to t…
PA/2019/1914
2019 Approved
80 Whitton Waye Whitton Hounslow TW3 2LU
Erection of a detatched outbuilding.
19/1169/HOT
2018 Approved
53 Whitton Waye Whitton Hounslow TW3 2LT
Part single and part two storey rear extension, alterations to existing first floor rear…
18/0931/HOT
2018 Approved
151 Argyle Avenue Whitton Hounslow TW3 2LP
Hip to gable and rear dormer roof extensions, and insertion of three rooflights to the fr…
18/0582/PS192
2017 Refused
122 Argyle Avenue Whitton Hounslow TW3 2LS
Proposed single storey rear extension (6m in depth, 2.95m to the eaves and 2.95m overall…
17/2646/PDE
2016 Approved
129 ARGYLE AVENUE HOUNSLOW TW3 2LL
Erection of a two storey side and single storey rear extension
P/2016/4865
2016 Approved
159 Argyle Avenue Whitton Hounslow TW3 2LP
Part single storey, part two storey rear extension.
16/2237/HOT
2016 Approved
116 Argyle Avenue Whitton Hounslow TW3 2LS
Proposed hip to gable roof extension with rear dormer and insertion of 2 No.velux windows…
16/2450/PS192
2016 Approved
159 Argyle Avenue Whitton Hounslow TW3 2LP
Loft conversion including hip to gable extension, rear dormer and 2No. Velux roof lights…
16/2235/PS192
2016 Approved
110 Argyle Avenue Whitton Hounslow TW3 2LS
Proposed two storey side extension and single storey rear extension.
16/1414/HOT
Richmond upon Thames
Planning Authority Score
4.4/10
Below average
#182 of 296 councils
Relevant to this application:
Householder decisions

Richmond upon Thames ranks #130 out of 296 councils for householder decision speed. Richmond upon Thames is also one of the strictest councils - it refuses more householder applications than almost any other, with only 82% approved vs 90% nationally.

One of the strictest councils
only 82% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Richmond upon Thames decision statistics
Based on MHCLG data, the year to March 2026
81%
Overall approval rate
Below avg (87%) #257 of 296
82%
Householder approved
Below avg (90%) #268 of 296
69%
Decided in 8 weeks
Above avg (63%) #130 of 296
35%
Extended time limit
Below avg (41%) #104 of 296
68%
Minor dwellings approved
181 decided (1-9 homes)
100%
Major dwellings approved
3 decided (10+ homes)
47%
Change of use approved
17 decided
1,888
Total decisions
358 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings