18 Watson Avenue North Cheam SM3 9RE Data via plota.co.uk
Proposal
Prior Approval for a single storey rear extension projecting from the rear of the original house by 5m. Data via plota.co.uk
Application progress
Approved on 17 Sept 2026 · Delegated Decision · Last checked 17 Sept 2026
Documents 16
Decision & officer reports 2
Plans & drawings 13
Application forms 1
Site constraints 5
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 2
Last sold for £553,000 in May 2026. Semi-detached house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in October 2016, the latest held for this property. The building may have changed since. View the certificate
Every application in Sutton - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
How this decision compares
Decided in 41 days from validation, 14 days faster than Sutton's median of 55 for extensions. Approved, as 88% of extensions here are.
Plota live figures for extensions decided by Sutton in the last twelve months, from validation. Sutton decision record →
Public comments
7 neighbours consulted · Last counted 17 Sept 2026
Consultation & key dates
- Neighbours
- 12 Aug 2026
- Consultation
- 12 Aug 2026
- Comments by
- 2 Sept 2026
- Statutory expiry
- 18 Sept 2026
- Env. assessment
- No
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
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%).
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.
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18 Watson Avenue North Cheam SM3 9RE
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