Change of use of building to 1No 3-bed and 2No 2-bed flats, erection of single storey extension and removal of stairs, part demolition of extension to form open lightwell and installation of external stairs, together with alterations to fenestration and doors, formation of parking area within rear garden following removal of boundary wall and erection of 1.8 metre high timber gates and wall, installation of stairs within front garden following removal of store rooms at lower ground floor level