27 Blackett Street, London, SW15 1QG Data via plota.co.uk
Proposal
Alterations to include: Erection of a mansard roof extension to the main rear roof slope; removal of chimney stack; erection of a single-storey side and rear extension; and alterations to the street-facing flank boundary wall. 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
Under consideration
No decision has been issued yet. Plota predicts a decision around 23 Dec 2026, from Wandsworth's recent extensions.
Site constraints 5
Checked on 5 November 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. 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.
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
- SW15 1QG
- Received
- 18 Sept 2026
- Validated
- 4 Nov 2026
- Ward
- Thamesfield Ward
- Case officer
- Show
- Target decision
- 23 Dec 2026
- Applicant
- Show
- Agent
- Smyth Dixon Ltd
Decision outlook
Day 2 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-15225563
- Statutory expiry
- 25 Nov 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%).
Track this application
27 Blackett Street, London, SW15 1QG
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