A small halfway house: Is deemed conclusively a single–family dwelling for purposes of zoning; and Is permitted to locate in all residential zones. A large halfway house is deemed conclusively a multifamily dwelling and is permitted to locate in zones of similar density. A halfway house is not subject to any special exception, conditional use permit, or procedure that differs from that required for a single–family dwelling or a multifamily dwelling of similar density in the same zone. A general zoning ordinance that conflicts with the provisions of this section is superseded by this section, to the extent of the conflict.