Squire and Partners won planning permission in 2008 for the redevelopment of a prestigious site on the southeast corner of Hanover Square, London W1, in a joint venture partnership between Stanhope and Mitsui Fudosan UK. The 91,000-square-foot mixed-use development — consisting of residential, office, and retail uses — replaces an existing 1960s building. Squire and Partners’ design expresses the traditional plot width of its immediate locale and relates to the scale and materiality of the context at Hanover Square. Largely constructed from a dark gray/black brick, the façades are punctuated with deep window reveals lined with white marble, with additional shading provided by vertical bronze fins. The development is designed as an exemplar sustainable building that makes use of renewable energy to limit the use of energy internally and control energy gains from external sources. Overall, the development is expected to provide 18-percent Co2 savings when measured against the current 2006 Building Regulations Part L2A.