23 Grasmere Avenue Whitton Hounslow TW3 2JG Data via plota.co.uk

PA26/1998 - General Permitted Development Extension Approved
Extensions & alterations

Proposal

Erection of a 6 metre rear extension with 2no roof lights. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
8 Jun 2026
✓
Validated
9 Jun 2026
✓
Approved
17 Jul 2026

Approved on 17 Jul 2026 · Delegated Decision · Last checked 17 Jul 2026

Documents

View the documents on the council's website ↗

Site constraints 5

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; Public transport access: PTAL 1b (very poor), TfL 2023, for the 100 m square; National infrastructure project 1340 m away: Teddington Direct River Abstraction (TDRA), at pre-application; Designated open space 47 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 2 November 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 £230,000 in June 2009. Terraced house, freehold.

29 June 2009£230,000

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

Building

Floor area76 m² (818 sq ft)
Energy ratingD (66 out of 100), could reach C
PropertyMid-terrace house, 4 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in April 2009, 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

3 Nov 2026Pending

2 Grasmere Avenue Whitton Hounslow TW3 2JQ

Single storey rear extension (5.20m dept 2.90 eaves 3.00m overall height)

PA26/3696

Nearby new applications

10 Nov 2026Pending

1 Prospect Crescent Twickenham TW2 7EB

The proposal is to convert the loft into a habitable space providing two bedroom...

PA26/3762
10 Nov 2026Pending

1 Colonial Avenue Twickenham TW2 7EE

Ground floor single storey rear and side extension

PA26/3813
10 Nov 2026Pending

2 Argyle Road,Hounslow,TW3 2BE

Works to Sycamore tree in rear garden in conservation area. Reduce height by app...

P/2026/3164
3 Nov 2026Pending

2 Grasmere Avenue Whitton Hounslow TW3 2JQ

Single storey rear extension (5.20m dept 2.90 eaves 3.00m overall height)

PA26/3696
2 Nov 2026Pending

Flat Part Ground And First Floor, 52 St Stephens Road, Hounslow, TW3 2BQ

Erection of a single storey outbuilding in the rear garden to be used as an anci...

P/2026/2165
30 Oct 2026Pending

35 Vincam Close Twickenham TW2 7AB

Demolition of existing garage of No.35 Vincam Close to facilitate construction o...

PA26/1291

Important details

Council
Richmond upon Thames
Application type
General Permitted Development Extension
Postcode
TW3 2JG
Received
8 Jun 2026
Validated
9 Jun 2026
Ward
Whitton Ward [WTT]
Case officer
Show
Target decision
20 Jul 2026
Decision
GPD Extension Conditional
Decision date
17 Jul 2026
Decision level
Delegated Decision
Applicant
Show
Agent
BetterLivingSpace Ltd

How this decision compares

Decided in 38 days from validation, 11 days faster than Richmond upon Thames's median of 49 for extensions. Approved, as 85% of extensions here are.

76%decided within 8 weeks
85%approved
1,397decided 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-14964360
Statutory expiry
30 Jun 2026

Historical activity at this location

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

This property

Previous applications at this address

2021 Refused
SINGLE STOREY REAR EXTENSION (6.00m depth, 3.00m eaves height, 3.20m overall height)
21/4450/PDE
Within ~100m

Nearby activity

2025 Approved
139 Wills Crescent Whitton Hounslow TW3 2JF
Demolition of the existing garage and construction of a single-storey rear extension.
PA25/2426
2025 Approved
139 Wills Crescent Whitton Hounslow TW3 2JF
Proposed hip-to-gable rear dormer loft conversion with Juliet balcony, front porch and th…
PA25/2412
2025 Refused
139 Wills Crescent Whitton Hounslow TW3 2JF
Demolition of existing garage, construction of new single storey rear extension. Construc…
PA25/1085
2025 Approved
52 Runnymede Road Twickenham TW2 7HF
Demolition of existing conservatory and erection of a single-storey rear extension with a…
PA25/0419
2024 Refused
139 Wills Crescent Whitton Hounslow TW3 2JF
Demolition of existing garage, construction of new single storey rear extension. Construc…
24/3004/HOT
2024 Approved
50 Runnymede Road Twickenham TW2 7HF
Single storey rear extension 6m in depth, 3.70m in height and 2.70m in height to eaves.
24/0895/PDE
2024 Approved
24 Rydal Gardens Whitton Hounslow TW3 2JH
Hip to gable and rear dormer roof extension with the addition of two rooflights to the fr…
24/0567/PS192
2023 Approved
61 Rydal Gardens Whitton Hounslow TW3 2JJ
Single storey ground floor rear extension.
23/1251/HOT
2022 Approved
46 Rydal Gardens Whitton Hounslow TW3 2JH
Hip to gable and rear dormer roof extension, change in fenestration, rooflights and side…
22/3197/PS192
2022 Refused
46 Rydal Gardens Whitton Hounslow TW3 2JH
Hip to gable and rear dormer roof extension, change in fenestration, rooflights and side…
22/2453/PS192
2022 Approved
31 Rydal Gardens Whitton Hounslow TW3 2JJ
Hip to gable with rear dormer roof extension
22/1816/PS192
2022 Approved
61 Rydal Gardens Whitton Hounslow TW3 2JJ
Hip to gable loft conversion with a rear dormer
22/0713/PS192
2021 Approved
43 Rydal Gardens Whitton Hounslow TW3 2JJ
Erection of a Single Storey Rear Extension.
21/3582/HOT
2021 Approved
52 Runnymede Road Twickenham TW2 7HF
PROPOSED DETACHED OUTBUILDING TO USE AS A CAR PARKING GARAGE ASSOCIATED WITH DWELLING HOU…
21/3547/HOT
2021 Approved
74 Rydal Gardens Whitton Hounslow TW3 2JH
T1 - Cedar Reduce overlong laterals to main crown line by 2-3 m to alleviate branch end w…
21/T0694/TPO
2021 Approved
52 Runnymede Road Twickenham TW2 7HF
PROPOSED DETACHED OUTBUILDING TO USE AS A GARAGE.
21/2808/PS192
2021 Approved
59 Rydal Gardens Whitton Hounslow TW3 2JJ
Hip to gable roof extension, rear dormer, installation of two rooflights to front roof sl…
21/2267/PS192
2021 Refused
43 Rydal Gardens Whitton Hounslow TW3 2JJ
Single storey rear extension, 6m in depth, 3m in height and 3m in height to eaves.
21/2546/PDE
2021 Approved
59 Rydal Gardens Whitton Hounslow TW3 2JJ
Single Storey Ground Floor Rear Extension
21/2275/HOT
2021 Approved
42 Runnymede Road Twickenham TW2 7HF
Loft extension involving, construction of Hip to Gable, Rear Dormer and installation of 2…
21/2137/PS192
2016 Approved
51 Rydal Gardens Whitton Hounslow TW3 2JJ
Proposed single storey rear extension (3.3m in depth, 3m to the eaves and 4m overall heig…
16/3107/PDE
2016 Withdrawn
51 Rydal Gardens Whitton Middlesex TW3 2JJ
Proposed single storey rear extension (3.3m in depth, 3m to the eaves and 4m overall heig…
16/2211/PDE
2016 Approved
53 Rydal Gardens Whitton Hounslow TW3 2JJ
Demolition of existing conservatory and proposed single storey rear extension.
16/1618/HOT
2016 Withdrawn
53 Rydal Gardens Whitton Hounslow TW3 2JJ
Proposed single storey rear extension (6m in depth, 3m to the eaves and 3m overall height…
16/1174/PDE
2016 Approved
60 Runnymede Road Twickenham TW2 7HF
Proposed single storey rear extension.
16/0022/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

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.