50, Powder Mill Lane, Twickenham, TW2 6ED Data via plota.co.uk

PA26/2557 - General Permitted Development Extension Approved
Extensions & alterations

Proposal

Single storey rear extension, 6m in depth, 3.65m in height and 2.5m in height to Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
18 Aug 2026
✓
Approved
21 Sept 2026

Approved on 21 Sept 2026 · Delegated Decision · Last checked 22 Sept 2026

Documents

View the documents on the council's website ↗

Site constraints 4

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
National infrastructure project 306 m away: Expansion of Heathrow Airport (Third Runway), at pre-application; Inside the Richmond upon Thames 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.

Sales history 3

Last sold for £225,000 in August 2006. Terraced house, freehold.

21 August 2006£225,000
4 November 2002£186,000
19 July 1996£79,000

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

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Other new applications on this street

20 May 2026Approved

22, Powder Mill Lane, Twickenham, TW2 6ED

Loft conversion with rear box dormer and juliet balcony doors, and 3 rooflights ...

PA26/1714
24 Sept 2026Pending

1 Powder Mill Lane Twickenham TW2 6EE

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

PA26/3256
21 Sept 2026Pending

208 Powder Mill Lane Twickenham TW2 6EJ

Single-storey rear extension of a conservatory 4.8m wide, 3.8m deep; 2.2m high a...

PA26/2764
8 Jun 2026Pending

91 Powder Mill Lane Twickenham TW2 6EF

A small outbuilding L shaped is needed to accommodate some indoor sports and lei...

PA25/3486

Nearby new applications

20 Oct 2026Pending

26, Strathearn Avenue, Twickenham, TW2 6JX

Single storey rear extension and conversion of garage to room

PA26/3546
16 Oct 2026Pending

12, Strathearn Avenue, Twickenham, TW2 6JU

Proposed garage conversion with first floor over and relocated front wall

PA26/3517
15 Oct 2026Pending

212 And 214 Hospital Bridge Road Twickenham TW2 6LF

Proposed shared vehicular access and driveways to two properties.

PA26/3456
6 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
5 Oct 2026Pending

14, Strathearn Avenue, Twickenham, TW2 6JU

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

PA26/3378
1 Oct 2026Pending

18 Lyndhurst Avenue Twickenham TW2 6BY

roof alterations with extended rear dormer

PA26/3344

Important details

Council
Richmond upon Thames
Application type
General Permitted Development Extension
Postcode
TW2 6ED
Received
18 Aug 2026
Validated
18 Aug 2026
Ward
Heathfield Ward [HTF]
Case officer
Show
Target decision
29 Sept 2026
Decision
GPD Extension Approved
Decision date
21 Sept 2026
Decision level
Delegated Decision
Agent
Artur Syzmonik

How this decision compares

Decided in 34 days from validation, 14 days faster than Richmond upon Thames's median of 48 for extensions. Approved, as 86% of extensions here are.

78%decided within 8 weeks
86%approved
1,289decided 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

Statutory expiry
8 Sept 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

2016 Approved
Single-storey part rear extension (following demolition of existing addition).
16/3815/HOT
2016 Approved
Loft conversion to include dormer extension on rear roof slope and insertion of 2 no. Vel…
16/3812/PS192
2016 Withdrawn
Single storey side/rear extension and loft conversion comprising dormer roof extension on…
16/3034/HOT
Within ~100m

Nearby activity

2025 Approved
40, Powder Mill Lane, Twickenham, TW2 6ED
Ground floor rear extension and internal reconfiguration
PA25/1441
2025 Approved
40, Powder Mill Lane, Twickenham, TW2 6ED
Loft conversion, hip to gable roof extension and rear dormer.
PA25/1442
2024 Refused
1 Longford Road Twickenham TW2 6EB
Hip to gable and rear dormer roof extension, porch at the front of the property and a sin…
24/1491/PS192
2023 Approved
111 Hospital Bridge Road Twickenham TW2 6LD
PROPOSED LOFT CONVERSION WITH GABLE END, REAR DORMER AND FRONT VELUX WINDOWS
23/0650/PS192
2022 Approved
117 Hospital Bridge Road Twickenham TW2 6LD
Single storey rear extension.
22/3290/HOT
2021 Approved
117 Hospital Bridge Road Twickenham TW2 6LD
Front porch extension and outbuilding in rear garden.
21/1649/PS192
2021 Refused
117 Hospital Bridge Road Twickenham TW2 6LD
Single storey rear extension 4m in depth, 3m in height and 3m in height to eaves.
21/1724/PDE
2020 Approved
1 Powder Mill Lane Twickenham TW2 6EE
Single Storey Front Porch Extension.
20/3069/HOT
2020 Approved
117 Hospital Bridge Road Twickenham TW2 6LD
Hip to gable end and rear dormer loft conversion and single storey rear extension.
20/2728/PS192
2020 Approved
89 Hospital Bridge Road Twickenham TW2 6DG
SINGLE STOREY REAR EXTENSION.
20/2397/HOT
2020 Approved
20 Powder Mill Lane Twickenham TW2 6ED
A single storey rear extension with pitched roof and single roof light. The extension wil…
20/2644/PDE
2020 Approved
Ground Floor Flat Rear 13 Longford Road Twickenham TW2 6EB
Replacement of the existing wooden garage a new brick garage
20/0463/FUL
2020 Approved
20 Powder Mill Lane Twickenham TW2 6ED
Single storey rear extension (6m depth, 3m eaves height, 3.30m maximum height)
20/0890/PDE
2019 Approved
30 Powder Mill Lane Twickenham TW2 6ED
Hip to gable and rear dormer roof extensions. 1 new side window. Installation of 3No. sky…
19/3186/PS192
2019 Withdrawn
30 Powder Mill Lane Twickenham TW2 6ED
Demolition part of the existing rear ground floor extension. Construction of a new full w…
19/3412/HOT
2019 Approved
30 Powder Mill Lane Twickenham TW2 6ED
Single-storey rear extension (3m depth, 3m eaves height, 3.166m maximum height), where th…
19/3179/PDE
2019 Approved
29 Powder Mill Lane Twickenham TW2 6EF
Side/rear extension.
19/1372/HOT
2019 Approved
2 Longford Road Twickenham TW2 6EA
T1 - Eucalyptus - Reduce by 30-35% (i.e. 4-5m) back to most recent previous reduction poi…
19/T0529/TPO
2018 Approved
Studio 2 13 Longford Road Twickenham TW2 6EB
Side and rear dormer roof extensions
18/3456/FUL
2018 Refused
30 Powder Mill Lane Twickenham TW2 6ED
Hip to gable and rear dormer roof extension. 2no. rooflights to front roof slope. 1No. ne…
18/2351/HOT
2018 Approved
109 Hospital Bridge Road Twickenham TW2 6LD
Hip to gable and rear dormer roof extensions, insertion of one obscure glazed window to t…
18/0454/PS192
2017 Approved
10 Powder Mill Lane Twickenham TW2 6ED
Proposed single-storey rear extension (4.5m in depth, 2.87m to the eaves and 3.5m overall…
17/2083/PDE
2017 Refused
121 Hospital Bridge Road Twickenham TW2 6LE
Application to increase the rear garden fence height from 1m to 2m.
17/0483/HOT
2016 Refused
Studio 2 13 Longford Road Twickenham TW2 6EB
Loft conversion comprising of a hip to gable roof extension and dormer roof extension on…
16/4408/FUL
2016 Approved
23 Powder Mill Lane Twickenham TW2 6EE
Erection of a PVCU conservatory to the rear of the property.
16/0378/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

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