37 Ashburnham Road Ham Richmond TW10 7NG Data via plota.co.uk

PA26/3564 - Section 191Cert Existing Lawful Use/Dev Registered

Proposal

Single-storey rear and side extension to the existing dwellinghouse at 37 Ashburnham Road, constructed in 2022, together with associated ground-floor alterations forming an open-plan kitchen/dining/living area, utility and bathroom. The certificate is sought for the wider as-built footprint shown on UVAdesign project 131-22, drawing PD.2 revision 01 dated 28/03/2022, with a rear projection of 5 metres. The works relate to the rear and side of the existing dwellinghouse. The property remains a single dwellinghouse and no separate residential unit or change of use is involved. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
19 Oct 2026
✓
Validated
20 Oct 2026
Decision
Expected by 14 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 2 Dec 2026 and 10 Dec 2026, from Richmond upon Thames's recent extensions.

Site constraints 7

In flood zones plus climate change
Inside the extent flood zones 2 and 3 could reach with climate change: the Central allowance for the 2080s on rivers, the Upper End allowance for sea level rise to 2125. From rivers. Defences are not counted.
The Environment Agency flood map for planning. Councils use it to decide when a flood risk assessment and the sequential test are needed. It is indicative and does not show whether a particular property will flood.
Flood map ↗
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 ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Local nature reserve 343 m away: Ham Lands; National infrastructure project 87 m away: Teddington Direct River Abstraction (TDRA), 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 21 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 2

Last sold for £690,000 in February 2022. Semi-detached house, freehold.

16 February 2022£690,000
30 September 2003£249,500

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

Building

Floor area83 m² (893 sq ft)
Energy ratingD (57 out of 100), could reach C
PropertySemi-detached house, 5 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, mains gas
WallsCavity wall, as built, no insulation (assumed)

From the energy performance certificate lodged in September 2021, the latest held for this property. The building may have changed since. View the certificate

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Important details

Application type
Section 191Cert Existing Lawful Use/Dev
Postcode
TW10 7NG
Received
19 Oct 2026
Validated
20 Oct 2026
Ward
Ham, Petersham & Richmond Riverside Ward [HMP]
Case officer
Show
Target decision
14 Dec 2026
Applicant
Show

Decision outlook

Day 8 of the 56-day target. Richmond upon Thames usually decides extensions by day 48.

Day 848 days to the 56-day target
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

Alt. reference
PP-15306403
Richmond upon Thames
Planning Authority Score
4.4/10
Below average
#182 of 296 councils
Relevant to this application:
Change of use

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

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.