27 Blackett Street, London, SW15 1QG Data via plota.co.uk
Proposal
Erection of a dormer extension to main rear roof and extension above two storey back addition. 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 late August on its register. Plota adds each one as soon as the council publishes it.
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision around 25 Dec 2026, from Wandsworth's recent extensions.
Site constraints 5
Checked on 7 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 April 2026, the latest held for this property. 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
- Certificate of Lawfulness - Proposed
- Postcode
- SW15 1QG
- Received
- 18 Sept 2026
- Validated
- 6 Nov 2026
- Ward
- Thamesfield Ward
- Case officer
- Show
- Target decision
- 23 Dec 2026
- Applicant
- Show
- Agent
- Smyth Dixon Ltd
Decision outlook
Day 5 of the 56-day target. Wandsworth usually decides extensions by day 49.
Plota live figures for extensions decided by Wandsworth in the last twelve months, from validation. Wandsworth decision record →
Consultation & key dates
- Alt. reference
- PP-15225564
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.
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27 Blackett Street, London, SW15 1QG
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