12 Longfield Street SW18 5RE Data via plota.co.uk
Proposal
Alterations including erection of a mansard extension (with French doors and safety rail) to the main rear roof, including raising the ridge and chimney stack by 600mm; Erection of an extension above the two-storey back addition; Erection of a single storey rear and side extension; Removal of shopfront, installation of white rendered banding detail and 2 x timber sash windows and bricking up to match existing; Installation of a replacement timber front entrance door; Removal of existing front porch. Data via plota.co.uk
Wandsworth Council is publishing its applications late: so far it has put about three fifths of those it has numbered since mid August on its register. Plota adds each one as soon as the council publishes it.
Application progress
Approved on 4 Mar 2026 · Delegated Standard · Last checked 19 Sept 2026
Site constraints 5
Checked on 2 November 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.
Building
From the energy performance certificate lodged in February 2021, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate
Every application in Wandsworth - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Wandsworth
- Application type
- Householder
- Postcode
- SW18 5RE
- Received
- 17 Dec 2025
- Validated
- 6 Jan 2026
- Ward
- Southfields
- Case officer
- Show
- Decision
- Approve with Conditions
- Decision date
- 4 Mar 2026
- Decision level
- Delegated Standard
- Applicant
- Show
- Agent
- Avis Appleton & Associates
- Freehold owner
- Show
How this decision compares
Decided in 57 days from validation, 8 days slower than Wandsworth's median of 49 for extensions. Approved, as 88% of extensions here are.
Plota live figures for extensions decided by Wandsworth in the last twelve months, from validation. Wandsworth decision record →
Consultation & key dates
- Comments by
- 27 Jan 2026
- Statutory expiry
- 2 Mar 2026
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
Wandsworth ranks #172 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (92%) than the national average (90%).
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.
Freehold owner: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
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12 Longfield Street SW18 5RE
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Freehold owner, on paid plans
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