Planning application
PP/26/00395
Basement Flat, 41 Sydney Street, London, SW3 6PX
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.
As published by the council, reference PP/26/00395
Timeline
Dates from the published record
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9 Dec 2025
Received by Kensington and Chelsea
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26 Jun 2026
Decision issued: Grant Planning Permission/Consent
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20 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
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LB/26/00394 Granted
Basement Flat, 41 Sydney Street, London, SW3 6PX
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.
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PP/24/06317 Granted
First/second Floor Flat, 49 Sydney Street, London, SW3 6PX
Erection of mansard roof extension with alterations to front & rear elevations and internal 3rd floor; as well as reinstatement of historic layout and features to 1st and 2nd floors
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LB/24/06318 Granted
First/second Floor Flat, 49 Sydney Street, London, SW3 6PX
Erection of mansard roof extension with alterations to front & rear elevations and internal 3rd floor; as well as reinstatement of historic layout and features to 1st and 2nd floors
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ARB/25/06785 Awaiting decision
65 Sydney Street, London, SW3 6PX
Prune 1x Lime (Tilia spp) at rearRecent refusal ARB/25/167
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PP/26/02424 Awaiting decision
9 Guthrie Street, London, SW3 6NU
Loft conversion involving installation of one rooflight to front elevation and two rooflights to rear elevation. Installation of 1.1m high conservation-style balustrades to the rear and 1.6m high privacy screens to side elevations. Erection of a ground floor side-infill conservatory and a second-floor rear extension with roof terrace. Installation of one rooflight to ground-floor kitchen roof and replacement rear window at ground floor level (Amended description).
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PP/26/00509 Granted
26 Bury Walk, London, SW3 6QB
Proposed?rear conservatory???
Other full applications applications
In Kensington and Chelsea
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PP/18/01985 Withdrawn
Flat 3, 24 Cornwall Gardens, London, SW7 4AW
Works to second floor flat including erection of rear extension, creation of external roof terrace areas above and to rear of said extension (with perimeter metal railings), together with internal alterations including removal of internal wall between kitchen and living room, and other refurbishment works
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PP/26/02078 Granted
Ruskin House, 35A Hyde Park Gate, London, SW7 5DN
Installation of 2no. roof mounted ASHPs including acoustic enclosure / screening.
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PP/26/02247 Withdrawn
41 Halsey Street, London, SW3 2PT
Refinements to lower ground floor conservatory and basement extension through removal of low external wall, installation of full height sliding doors, and reinstatement of larger external steps. Replace glazed flat roof at ground floor level with glass-box extension incorporating solid floor structure and internal walk on rooflight. Installation of glazed sliding doors out to a Juliet balcony with metal railings balustrade. Create access from living room by lowering sill of window to form archway; Single-storey extension to closet wing, aligning depth with No.?40 Halsey Street. New timber-framed glazed doors to the rear of extended wing. Widening opening to half-level study within partition to accommodate new double doors. Sunroom will include full-height sliding doors and Juliet balcony with painted or PPC metal balustrades.
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PP/26/02237 Granted
134 Brompton Road, London, SW3 1HY and 5 Cheval place, London, SW7 1EW
Change of use from Use Class E to Restaurant (Use Class E(b)), new recessed front bifolding doors, awning, and signs at front and rear, replace rooflights to double glazed hipped white UPVC/aluminium painted white, replace rear doors to match existing
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PP/26/02978 Granted
59A Palace Gardens Terrace, London, W8 4RU
Variation of Condition 2 (Compliance with approved drawings) of planning permission Ref. PP/24/07747 dated 28th February 2025, to replace proposed front and rear elevation drawings with new proposed drawings representing modest elevational changes of main building at first floor level only.