Basement Flat, 41 Sydney Street, London, SW3 6PX Data via plota.co.uk
Proposal
Internal and external alterations including replacement of existing metal stair to front lightwell with new black painted metal stair, enclosure of open space beneath ground floor entrance stairs with new partition wall and door to form lobby entrance to Basement Flat, replacement of existing 1969 infill extension beside rear closet wing with smaller infill extension; and widening of rear lightwell to form patio and allow for the installation of new black painted metal stair to provide access/egress to Stewart's Grove. Data via plota.co.uk
Application progress
Approved on 26 Jun 2026 · Last checked 22 Oct 2026
Planning committee
Decided by Kensington and Chelsea Planning Applications Committee on 23 Jun 2026.
Approved
As officers recommended.
- Officers advised approval because the works would protect the listed building, conservation area and neighbours’ living conditions.
- Three letters objected to the planning application, raising concerns about access, security, overlooking, noise, overdevelopment and conservation.
- The committee granted permission by majority with the recommended conditions.
Source: Plota analysis of Kensington and Chelsea's committee minutes of 23 Jun 2026.
Site constraints 9
Show all 8 with distances
- 0 m7-67, Sydney Street Sw3Grade II
- 25 m18-68, Sydney Street Sw3Grade II
- 68 m12, 14 and 16, Sydney Street Sw3Grade II
- 91 m1, 3 and 5, Sydney Street Sw3Grade II
- 91 m4, 6 and 8, Sydney Street Sw3Grade II
- 131 m25-34, Sumner Place Sw7Grade II
- 134 m1-5, SYDNEY PLACE SW7 (See details for further address information)Grade II
- 140 mAvenue StudiosGrade II
Checked on 6 October 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.
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Important details
- Council
- Kensington and Chelsea
- Application type
- Listed Building Consent
- Postcode
- SW3 6PX
- Received
- 30 Jan 2026
- Validated
- 30 Jan 2026
- Ward
- Stanley
- Case officer
- Show
- Target decision
- 27 Mar 2026
- Decision
- Granted
- Decision date
- 26 Jun 2026
- Applicant
- Show
How this decision compares
Decided in 147 days from validation, 64 days slower than Kensington and Chelsea's median of 83 for extensions. Approved, as 95% 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 →
Consultation & key dates
- Comments by
- 17 Apr 2026
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%).
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Basement Flat, 41 Sydney Street, London, SW3 6PX
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