12, Strathearn Avenue, Twickenham, TW2 6JU Data via plota.co.uk

PA26/0760 - Householder Application Approved
Extensions & alterations

Proposal

Proposed garage conversion to habitable room with new flat roof over and front elevation set back. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
4 Mar 2026
✓
Approved
28 Apr 2026

Approved on 28 Apr 2026 · Delegated Decision · Last checked 12 Jul 2026

Documents

View the documents on the council's website ↗

Associated applications 2

Site constraints 13

Richm Highway Status Highways Publicly MaintainedRichm Takeaway Mgmt - Take Away Restriction Zones’ 400 metre buffers around prArticle 4 directionRichm Public Open Space Poorly Provided Area poorly provided with Public Open SRichm Town Centre 400m Buffer WhittonRichm Village Boundary Whitton and Heathfield VillageRichm Susceptibe Ground Water Flood >= 75%Richmond CIL LowRichm Village Character Area Percy Road, Ryecroft Road and surrounds - Area 9
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 ↗
Richm Highway Status Highways Publicly MaintainedCouncil record
Recorded by the council for this site.
Council site ↗
Richm Takeaway Mgmt - Take Away Restriction Zones’ 400 metre buffers around prCouncil record
Recorded by the council for this site.
Council site ↗
Article 4 directionCouncil record
Some permitted development rights are withdrawn. The direction is on the council's register but not published as open data.
Council site ↗
Richm Public Open Space Poorly Provided Area poorly provided with Public Open SCouncil record
Recorded by the council for this site.
Council site ↗
Richm Town Centre 400m Buffer WhittonCouncil record
Recorded by the council for this site.
Council site ↗
Richm Village Boundary Whitton and Heathfield VillageCouncil record
Recorded by the council for this site.
Council site ↗
Richm Susceptibe Ground Water Flood >= 75%Council record
Recorded by the council for this site.
Council site ↗
Richmond CIL LowCouncil record
Recorded by the council for this site.
Council site ↗
Richm Village Character Area Percy Road, Ryecroft Road and surrounds - Area 9Council record
Recorded by the council for this site.
Council site ↗
Also on the record
National infrastructure project 561 m away: Expansion of Heathrow Airport (Third Runway), at pre-application; Inside the Richmond upon Thames 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 £935,000 in January 2023. Detached house, freehold.

17 January 2023£935,000

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

Building

Floor area117 m² (1,259 sq ft)
Energy ratingD (57 out of 100), could reach B
PropertyDetached house, 6 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in August 2022, 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

1 Oct 2026Pending

14, Strathearn Avenue, Twickenham, TW2 6JU

A hip to gable dormer loft conversion with associated internal remodelling and r

PA26/3378
7 Aug 2026Approved

18, Strathearn Avenue, Twickenham, TW2 6JU

Proposed loft extension with hip to gable roof extension, rear facing dormer and

PA26/2746

Nearby new applications

1 Oct 2026Pending

14, Strathearn Avenue, Twickenham, TW2 6JU

The application is for an L shaped ground floor extension with a side facing fir...

PA26/3379
1 Oct 2026Pending

14, Strathearn Avenue, Twickenham, TW2 6JU

A hip to gable dormer loft conversion with associated internal remodelling and r

PA26/3378
28 Sept 2026Pending

5 Ashdale Way Twickenham TW2 7BG

Internal conversion of the existing integral garage into a habitable ground floo...

PA26/3302
24 Sept 2026Pending

1 Powder Mill Lane Twickenham TW2 6EE

Single Storey Rear Extension and increase to Roof over Side Storage.

PA26/3256
15 Sept 2026Pending

233, Nelson Road, Twickenham, TW2 7BQ

Variation of planning reference 23/2244/FUL, to alter the ground floors of both

PA26/2937
13 Sept 2026Pending

126A, High Street, Whitton, Twickenham, TW2 7LL

Change of use of a two floor property from aesthetic clinic services to Class E ...

PA26/2935

Important details

Council
Richmond upon Thames
Application type
Householder Application
Postcode
TW2 6JU
Received
4 Mar 2026
Validated
4 Mar 2026
Ward
Heathfield Ward [HTF]
Case officer
Show
Target decision
29 Apr 2026
Decision
Granted Permission
Decision date
28 Apr 2026
Decision level
Delegated Decision
Applicant
Show
Agent
ajt design services ltd

How this decision compares

Decided in 55 days from validation, 7 days slower than Richmond upon Thames's median of 48 for extensions. Approved, as 86% of extensions here are.

78%decided within 8 weeks
86%approved
1,177decided 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-14754446
Statutory expiry
27 Mar 2026

Historical activity at this location

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

This property

Previous applications at this address

2025 Refused
First Floor Side Extension, Conversion of Garage to Habitable Accommodation, Alterations…
PA25/3519
2025 Refused
First Floor Side Extension, Conversion of Garage to Habitable Accommodation, Alterations…
PA25/3488
2025 Approved
Non-material amendment to planning approval ref 24/2989/HOT dated 20 January 2025 to allo…
PA25/2779
2024 Approved
Proposed single storey rear extension & part two storey part single storey side extension
24/2989/HOT
Within ~100m

Nearby activity

2025 Refused
11, Pauline Crescent, Twickenham, TW2 6JD
Two-storey rear extension and hip to gable and rear dormer roof extension.
PA25/4339
2025 Refused
13 Pauline Crescent Twickenham TW2 6JD
First-floor rear extension over the existing ground-floor extension
PA25/4338
2025 Decided
1 Lichfield Lane Twickenham TW2 6LA
Group 4 Box elder maple, Elder, Holly cotoneaster, Cypress, Laburnum Fell All 4 tagged tr…
PA25/2709
2025 Approved
157, Percy Road, Twickenham, TW2 6JE
Single storey Rear and Side Extension
PA25/0736
2023 Approved
7 Strathearn Avenue Twickenham TW2 6JT
Single storey front extension and convert the garage to the utility room.
23/1941/HOT
2023 Refused
157 Percy Road Twickenham TW2 6JE
Single storey rear extension 4.27m in depth, 3.87m in height and 2.69m in height to eaves.
23/1895/PDE
2022 Approved
158 Percy Road Twickenham TW2 6JF
Hip to gable Loft conversion with Rear dormer
22/2236/PS192
2022 Approved
12 Pauline Crescent Twickenham TW2 6JD
Construct rear ground floor addition, projection under 3m from existing rearmost wall, wi…
22/0585/HOT
2021 Approved
155 Percy Road Twickenham TW2 6JE
Single storey side and rear extension. First floor extension over existing garage. Conver…
21/2560/HOT
2021 Approved
155 Percy Road Twickenham TW2 6JE
Hip to gable roof extension, with rear dormer roof extension. Rooflights to front elevati…
21/2561/PS192
2021 Refused
12 Pauline Crescent Twickenham TW2 6JD
To construct rear ground floor addition with pitched roof.
21/2380/PS192
2021 Approved
12 Pauline Crescent Twickenham TW2 6JD
Hip-to-gable roof addition; rear dormer roof addition and installation of rooflights to f…
21/2311/PS192
2021 Refused
148 Percy Road Twickenham TW2 6JF
Erection of a hip to gable loft dormer conversion
21/0447/PS192
2021 Approved
145 Percy Road Twickenham TW2 6JE
SINGLE STOREY REAR EXTENSION.
21/0192/HOT
2020 Withdrawn
148 Percy Road Twickenham TW2 6JF
Proposed loft extension with flat roof dormer to the rear and 2x roof skylights at the fr…
20/3042/FUL
2020 Refused
19 Strathearn Avenue Twickenham TW2 6JT
Single storey rear extension (4.00m depth, 3.00m eaves height, 3.95m maximum height).
20/3355/PDE
2020 Approved
18 Pauline Crescent Twickenham TW2 6JD
Proposed replacement garden building / garage
20/1398/PS192
2020 Approved
21 Strathearn Avenue Twickenham TW2 6JT
Loft conversion with hip to gable and rear dormer. Conversion of Garage to Utility room…
20/1585/PS192
2019 Approved
6 Pauline Crescent Twickenham TW2 6JD
Single-storey rear infill extension and new doors to rear (following demolition of existi…
19/3383/HOT
2019 Approved
152 Percy Road Twickenham TW2 6JF
Proposed side hipped roof to 2-storey flat roof extension.
19/1002/HOT
2018 Approved
160 Percy Road Twickenham TW2 6JF
Details pursuant to conditions DV18A - Refuse Arrangements of planning permission 12/4047…
12/4047/DD01
2018 Approved
147 Percy Road Twickenham TW2 6JE
Single storey rear/side extension and alterations to existing ground floor rear elevation
18/0684/HOT
2017 Approved
4 Pauline Crescent Twickenham TW2 6JD
Single Storey Extension
17/2848/HOT
2017 Refused
167 Percy Road Twickenham TW2 6JE
Two storey side extension to create living accommodation ancillary to main dwelling.
17/2001/HOT
2017 Approved
5 Pauline Crescent Twickenham TW2 6JD
Hip to gable and rear dormer roof extension with three rooflights to the front roof slope
17/1027/PS192
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

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.