Conversion of a single residential dwelling into 3 x units (1 x 2 bedroom and 2 x 1 bedroom), erection of a rear dormer and installation of a balcony [part-retrospective]

First and second floor rear extension, 2 x rooflights to front roof slope, rear dormer roof extension and external alterations to form the change of use including part retention at ground floor level from a bank (A2 Use Class) to 4 residential flats including refuse and cycle provision