20 Wilbury Avenue Cheam SM2 7DU Data via plota.co.uk

DM2026/00613 - Householder Application Approved

Proposal

Erection of a two storey front extension, a two storey rear extension, a first floor side extension, conversion of garage into habitable room and conversion of loft space involving alterations to roofline, increase in ridge height, three dormer extensions to rear and rooflights to flank roofslopes. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
18 May 2026
✓
Approved
13 Jul 2026

Approved on 13 Jul 2026 · Delegated Decision · Last checked 18 Jul 2026

Associated applications 2

Site constraints 6

Air quality management area: Sutton 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
Radon affected area, class 2; SSSI 446 m away: Banstead Downs SSSI; Inside the Sutton (Sutton) built-up area; Public transport access: PTAL 0 (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 British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI), 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 May 1996. Detached house, freehold.

7 May 1996£230,000

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

Building

Floor area163 m² (1,755 sq ft)
Energy ratingD (57 out of 100), could reach C
PropertyDetached house, 8 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in April 2026, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Sutton
Application type
Householder Application
Postcode
SM2 7DU
Received
18 May 2026
Validated
18 May 2026
Ward
Cheam
Case officer
Show
Decision
Application Granted
Decision date
13 Jul 2026
Decision level
Delegated Decision
Applicant
Show
Agent
SWG Designs South East Ltd

How this decision compares

Decided in 56 days from validation, about the council's usual 55 days. Approved, as 88% of extensions here are.

90%decided within 8 weeks
88%approved
669decided in the last year

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

Consultation & key dates

Comments by
24 Jun 2026
Env. assessment
No
Sutton
Planning Authority Score
8.2/10
Excellent
#23 of 296 councils
Relevant to this application:
Householder decisions

Sutton is one of the fastest councils in England for householder decisions, ranking #14 out of 296. Only 13% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Householder applications are slightly more likely to be approved here (93%) than the national average (90%).

Among the fastest councils in England
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Sutton decision statistics
Based on MHCLG data, the year to March 2026
90%
Overall approval rate
Above avg (87%) #118 of 296
93%
Householder approved
Above avg (90%) #138 of 296
91%
Decided in 8 weeks
Above avg (63%) #14 of 296
13%
Extended time limit
Below avg (41%) #8 of 296
71%
Minor dwellings approved
85 decided (1-9 homes)
89%
Major dwellings approved
9 decided (10+ homes)
81%
Change of use approved
26 decided
891
Total decisions
93 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.