82 Mount Street Mayfair W1K Timeline News and progress updates from 82 Mount Street new development in Mayfair W1K Post a new milestone Sold out 82 Mount Street has sold out. Developer REDD has sold the entire £35 million development in Mayfair within five days of launch. Read more: Mayfair development sells out... 19/01/2021 by Buildington Plans Approved Westminster City Council has approved plans for the development of London's first “covid-compliant” apartment block (read more). The £40 million development by... 10/06/2020 by Buildington