B. For the purposes of this section:
1. "Accessory dwelling unit" means an independent dwelling unit that includes a kitchen and that is located on the same lot as a single-family housing unit, duplex, triplex, townhome or other housing unit.
2. "Park model trailer" means a trailer that is a structure built on a single chassis, mounted on wheels and designed to be connected to the utilities necessary for operating installed fixtures and appliances and that has a gross interior area of at least three hundred twenty square feet and not more than four hundred square feet when prepared for occupancy.