Planning application
PP/26/00643
Flat A, 27 Holland Street, London, W8 4NA
Proposal
Proposed mansard roof extension, rebuilding of single storey rear extension and other external alterations including rear fenestration changes and new rooflight
As published by the council, reference PP/26/00643
Timeline
Dates from the published record
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18 Dec 2025
Received by Kensington and Chelsea
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29 May 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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NMA/26/03114 Withdrawn
Flat A, 27 Holland Street, London, W8 4NA
Non-material amendment to planning permission 26/00643 (Proposed mansard roof extension, rebuilding of single storey rear extension and other external alterations including rear fenestration changes and new rooflight) to install air conditioning unit over rear flat roof, out of public view.
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NMA/26/03112 Decided
Flat A, 27 Holland Street, London, W8 4NA
Non-material amendment to planning permission 26/00643 (Proposed mansard roof extension, rebuilding of single storey rear extension and other external alterations including rear fenestration changes and new rooflight) to allow enlargement of existing kitchen window to allow more natural light.
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PP/26/01344 Granted
3 Gregory Place, London, W8 4NG
Alterations to the butterfly roof to extend the existing roof terrace garden
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ARB/25/05865 Granted
18 Holland Street, London, W8 4LT
Prune 1x Pittosporum and 1x Fig at rear
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CON/26/01120 Granted
20 Holland Street, London, W8 4LT
Details required by Condition 11 (submission of details - d) full schedule of repairs to brickwork, including means of removal of existing cementitious mortar;?e) sample panel of repointing and details of new mortar mix) of planning permission PP/23/04238 (Conversion of mixed use listed building into single residential dwelling; replacement of mansard roof; replacement of windows; installation of solar panels; construction of external bin and cycle storage; external alterations, landscaping and other associated works; internal works including removal of modern fixtures and fittings; installation of partitions, and other associated internal works)
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LB/26/03098 Awaiting decision
14 Holland Street, London, W8 4LT
Removal on non-original furniture, fixtures and fittings. Installation of new coffee shop to include new floor finish over existing screed floor (floor boards retained), new light fittings, new coffee counter, plumbing and services. Limited refurbishment to shop front such as painting and new sign in place of existing.
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.