25/08197/LBCPlanning Application 25/08197/LBC

Heritage application at 40 - 46 Brook Street West End London W1K 5DB, Westminster. View planning documents, track the decision and get email alerts on updates.

Enriching application data

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Council recordsAppealsFlood risk

Pending Decision

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Excavation to deepen the basement level under nos 40-46 Brook Street; raising height of fourth-floor ceilings in the rear townhouses (nos. 42-46 Brook Street) and installation of three plant decks with localised structural penetrations to accommodate supporting beams; installation of new external plant equipment and associated enclosures at roof levels, and erection of a lightweight pergola at first-floor level between the townhouses and the mews building, together with two new roof lanterns at ground floor level; replacement of non-original windows at ground and second floor of no. 40 Brook Street, alongside other elevation alterations at ground floor level; reinstatement of historical features, internal and external alterations including localised fabric removal, installation of a corner turret and side gables; and other associated works. (Linked with 25/08366/NMA)

25/08197/LBC

Small

Heritage

40 - 46 Brook Street West End London W1K 5DB

SubmittedSubmitted11 Nov

ValidatedValidated

ConsultationConsultation

TargetTarget Date

DecidedDecided

7 weeks typical decision time in Westminster90% of heritage applications approved

This is a heritage application for window replacement at 40 - 46 Brook Street West End London W1K 5DB. Westminster has handled 2,686 applications of this type and approves 90% of them, typically deciding them in 64 days. It was submitted on 11 November 2025 and is still awaiting a decision. The site is in the Mayfair conservation area, with 20 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 561 applications across West End. We hold 456 applications in total for the W1K postcode area.