a) construction of two-storey extension to the rear including roof light, b) construction of external access ramp to front including modifying existing railings and plinth, c) moving the existing front external stairs to basement from the right to the left side including modifying existing railings and plinth d) construction of new internal stair flight from first floor landing to existing rear extension at first floor e) modifying internal and external walls indicated on plans all at No. 48 Mount Pleasant Square, Dublin 6