Single detached dwelling unit, SDU, single residential unit, residential dwelling unit, Single detached unit, SRDU, SFH.
Also defined in individual municipalities. Usually found in the Comprehensive zoning bylaws
NOTE: a RDU/SFH etc… definition must have a place to sleep, a single kitchen and sanitary facilities. The combination of those 3 items is a RDU. If there is more than one kitchen – it is not a single housekeeping unit.