15A Whittaker Road Sutton SM3 9QG Data via plota.co.uk

DM2026/00852 - Full Application Refused

Proposal

Erection of an outbuilding for use as a granny annexe incidental to main dwelling. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
14 Jul 2026
✗
Refused
5 Oct 2026
Appeal
Not lodged

Refused on 5 Oct 2026 · Delegated Decision · Last checked 6 Oct 2026

Site constraints 4

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 ↗
Also on the record
Local nature reserve 379 m away: Anton Crescent Wetland; Inside the Sutton (Sutton) 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, 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 £345,000 in November 2024. Flat or maisonette, leasehold.

1 November 2024£345,000
11 January 2008£229,950
20 January 2005£148,000

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

Building

Floor area58 m² (624 sq ft)
Energy ratingC (71 out of 100)
PropertyDetached maisonette, 3 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in December 2016, 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
Full Application
Postcode
SM3 9QG
Received
14 Jul 2026
Validated
14 Jul 2026
Ward
Stonecot
Case officer
Show
Target decision
8 Sept 2026
Decision
Application Refused
Decision date
5 Oct 2026
Decision level
Delegated Decision
Applicant
Show
Agent
polar design

How this decision compares

Decided in 83 days from validation, 28 days slower than Sutton's median of 55 for extensions. Refused, as 12% 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 →

Public comments

No public comments yet.

Last counted 6 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Comments by
25 Aug 2026
Statutory expiry
8 Sept 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.