20 Birchwood Avenue Wallington SM6 7EN Data via plota.co.uk
Proposal
Conversion of loft space involving alterations to existing roofline, a dormer extension at rear, a window to flank roofslope and rooflights to front roofslope. Data via plota.co.uk
Application progress
Approved on 7 May 2026 · Delegated Decision · Last checked 6 Jul 2026
Documents 10
Decision & officer reports 2
Plans & drawings 7
Application forms 1
Site constraints 4
Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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.
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Important details
How this decision compares
Decided in 48 days from validation, 7 days faster than Sutton's median of 55 for extensions. Approved, as 86% of extensions here are.
Plota live figures for extensions decided by Sutton in the last twelve months, from validation. Sutton decision record →
Consultation & key dates
- Env. assessment
- No
Historical activity at this location
27 previous applications on record - archival context, not part of the live application.
Previous applications at this address
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%).
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20 Birchwood Avenue Wallington SM6 7EN
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