This section applies only to public group homes, nonprofit private group homes, and alternative living units. To avoid discrimination in housing and to afford a natural, residential setting, a group home or an alternative living unit for individuals with developmental disability: Is deemed conclusively a single-family dwelling; Is permitted to locate in all residential zones; and May not be subject to any special exception, conditional use permit, or procedure that differs from that required for a single-family dwelling. The provision of separately identified living quarters for staff may not affect the conclusive designation as a single-family dwelling under paragraph (1)(i) of this subsection. A general zoning ordinance, rule, or regulation of any political subdivision that conflicts with the provisions of this section or any rule or any regulation that carries out the purpose of this section is superseded by this section to the extent of any conflict.