Plans submitted for luxury residential redevelopment of Canadian High Commission building in Mayfair

Proposals for the 18,393 square metre scheme, at 1-3 Grosvenor Square within the Mayfair Conservation Area, include the demolition of the existing seven storey building and its replacement with a nine storey building with a new lower basement level. The existing Grosvenor Square and Grosvenor Street facades are to be retained under the plans.

The new building is proposed to contain 41 apartments for market sale, with between one and six bedrooms. The plans include a gym, swimming pool and banqueting suite on the ground and lower ground levels and 53 parking spaces in the new lower basement.

The application proposes to convert the building's existing office and residential uses to residential use only, with the loss of 8,500 sq m of office space.

A payment in lieu of the provision of affordable housing has been proposed by the developer. On-site provision of affordable housing is deemed unviable and a search for suitable donor sites has been unsuccessful.

Westminster Council has set a target date of 28 August for determining the application.