(3) As used in this section, “tenant” includes each resident of a mobile manufactured home park, as defined in section 21-64 , including a resident who owns his own home, “landlord” includes a “licensee” and an “owner” of a mobile manufactured home park, as defined in section 21-64 , “complex” means two or more buildings on the same or contiguous parcels of real property under the same ownership, and “mobile manufactured home park” means a parcel of real property, or contiguous parcels of real property under the same ownership, upon which five or more mobile manufactured homes occupied for residential purposes are located.