26/00555/NMAPlanning Application 26/00555/NMA

Amendment application at 23 Grafton Street London W1S 4EY, Westminster. View planning documents, track the decision and get email alerts on updates.

Enriching application data

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Council recordsAppealsFlood risk

Permitted

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Amendments to planning permission dated 17 June 2025 (RN: 25/01604/FULL) for Phased development including replacement of rear basement roof slab and creation of a rear extension at ground floor. Removal of rear ground floor toilet block and external fire escape stairs. Demolition of existing, altered mansard roof and construction of a new mansard roof with dormer windows and concealed plant enclosure. Extension of existing lift to serve fourth floor. Replacement of third floor rear windows with double glazed sash windows. Minor internal reconfigurations. Continued use of ground floor as retail (Use Class E(a)) and basement, first, second, third and fourth as office (Use Class E(g)). NAMELY, to retain ground floor rear door, retain existing floor slab and rear void, retain ground-floor landing stairs in existing arrangement, and amendment of Condition 11 to require details of waste and recycling to be submitted for approval prior to occupation.

26/00555/NMA

Small

Amendment

23 Grafton Street London W1S 4EY

SubmittedSubmitted30 Jan

ValidatedValidated

ConsultationConsultation

TargetTarget Date

DecidedDecided21 Apr

7 weeks typical decision time in Westminster80% of amendment applications approved

This is an application to amend a permission at 23 Grafton Street London W1S 4EY. Westminster has handled 604 applications of this type and approves 80% of them, typically deciding them in 40 days. This one was decided in 81 days, 6 weeks longer than Westminster's median. The site is in the Mayfair conservation area, with 20 listed buildings nearby. There have been 5 other applications at this address. In the past year there have been 561 applications across West End. We hold 432 applications in total for the W1S postcode area.