Conversion of single family dwelling to four self-contained units; excavation to provide basement level; two-storey front extension; part two, part three storey rear extension; alteration of main roof from hipped to flat including increase in height; replacement of all existing windows and associated changes to fenestration; installation of 18x obscure-glazed windows to side elevations; provision of refuse storage, cycle parking and 2no. car parking within forecourt; part demolition of swimming pool in rear garden and provision of a garden terrace, communal amenity space and associated landscaping.