Variation of condition 2 (approved plans) of planning permission 161768 [Conversion of existing building into 2 flats], namely for various minor material amendments including the retention of an external stair access to basement level for ancillary space for the ground floor flat, a boundary wall, the removal of a corner window, replacement windows and door, and the provision of a cycle store and altered bin store facilities (part-retrospective application) (amendeddescription)