Three Kings Mayfair Mayfair W1K Timeline News and progress updates from Three Kings Mayfair new development in Mayfair W1K Post a new milestone Development opportunity for sale 17-18 Three Kings Yard freehold development opportunity in Mayfair is for sale for £13,500,000 through Carter Jonas. Planning agreed for demolition of existing... 20/08/2019 by Buildington Planning permission granted Planning permission was granted for the redevelopment of the site at 17 Three Kings Yard. 20/06/2017 by Buildington