Flat 5, 77 Cadogan Square, London, SW1X 0DY Data via plota.co.uk
Description
Formation of mansard roof above the rear portion of No. 75 to extend the existing fifth floor apartment at Nos. 75-77 Cadogan Square, together with the installation of flat roofed dormer windows, rooflights and a concealed roof terrace, and internal alterations including the insertion of a staircase to create a duplex apartment… Data via plota.co.uk
Last checked
How this decision compares
Decided in 73 days from validation, 17 days faster than Kensington and Chelsea's median of 90 for extensions. Refused, as 4% of extensions here are.
Plota live figures for extensions decided by Kensington and Chelsea in the last twelve months, from validation. Kensington and Chelsea decision record →
Site constraints 5
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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Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
Kensington and Chelsea ranks #174 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (94%) than the national average (90%).