Retention of ground floor commercial units, part change of use from Use Class A1 (shops) to use Class C3 (residential) on upper floors and part of ground floor (rear part), and alterations including excavation to form a basement to Nos. 156-158 Clapham High Street, the demolition of existing 1-3 storey rear extensions and erection of replacement part 3 part 4 rear and side extensions to provide 28 residential units (Use Class C3) with shared amenity space, landscaping and associated works.