15 Thornton Road London Lambeth SW12 0JX Data via plota.co.uk
Proposal
Application for a Certificate of Lawful Development (Proposed) with respect to the erection of a rear roof extension, incorporating a juliet balcony with the addition of three roof lights to the front roof slope and a side obscured window. Data via plota.co.uk
Application progress
Approved on 21 May 2026 · Delegated Decision · Last checked 9 Sept 2026
Documents 18
Decision & officer reports 1
Plans & drawings 12
Application forms 2
Site constraints 3
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 49 days from validation, 7 days faster than Lambeth's median of 56 for lawful development certificates. Approved, as 81% of lawful development certificates here are.
Plota live figures for lawful development certificates decided by Lambeth in the last twelve months, from validation. Lambeth decision record →
Public comments
No public comments yet.
Last counted 9 Sept 2026
Consultation & key dates
- Env. assessment
- No
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
Lambeth ranks #164 out of 296 councils for householder decision speed. 47% of applications have the time limit extended, above the 41% national average. Lambeth is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.
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15 Thornton Road London Lambeth SW12 0JX
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