As used in this article, the following terms shall have the meanings indicated:
Any person, group of persons, firm, corporation or officer thereof, partnership, association, company, trust, or other legal entity who owns, operates, exercises control over or is in charge of a rental property or owner-occupied property.
Any structure which the owner thereof occupies, uses, or allows to function or be occupied as a domicile or home other than as a rental property.
A building, group of buildings, or a portion thereof which contains one or more individual apartments, which is kept, used, maintained, advertised or held out to be a place where living accommodations are supplied, whether furnished or unfurnished, for pay or other consideration, to one or more individuals, and is meant to include one or more individual apartments. A property shall be presumed to be a rental property if a lease exists for the property, if there is written proof of rent being paid thereon, or if the property is registered as a rental property.