cs:westminster:26/05761/FULLPlanning Application cs:westminster:26/05761/FULL
Planning application at Washington House 40 - 41 Conduit Street London W1S 2YQ, Westminster. View planning documents, track the decision and get email alerts on updates.
Use of part basement and part ground floor as dual alternative restaurant or retail (Class E) and use of part basement ground and first to sixth floors as offices (Class E), provisions for cycle storage, refuse and servicing at mezzanine level; demolition of existing roof level plant area; various extensions to the building including rear infill extension at mezzanine level, rear extension at 4th and 5th floor levels, front side and rear extensions to the 6th floor level, construction of a 7th storey extension all to provide additional office (Class E) floorspace; replacement of the rear curtain wall facade at mezzanine to 3rd floor levels; the replacement of plant within an acoustic enclosure at roof level; reconfiguration of the ground floor Conduit Street frontage and other associated development.
26/05761/FULL
Washington House 40 - 41 Conduit Street London W1S 2YQ
This is a planning application for demolition at Washington House 40 - 41 Conduit Street London W1S 2YQ. Westminster has handled 18,781 applications of this type and approves 88% of them, typically deciding them in 56 days. It was submitted on 21 August 2026 and is still awaiting a decision. The site is in the Mayfair conservation area, with 18 listed buildings nearby. There has been 1 other application at this address. We hold 430 applications in total for the W1S postcode area.
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Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Westminster