A city or town may require a residential rental property owner whose property has been designated as a slum or exhibits the criteria prescribed in section 9-1303, relating to violations that materially affect the health and safety of the occupants of the property, to hire a property management firm that is regulated pursuant to Title 32, Chapter 20, Article 3.1 to manage the property, participate in the city or town’s crime free multihousing program, if applicable, and attend city or town approved landlord tenant training classes if available from the city or town.  The city or town may also require the property owner to participate in comparable training provided by a nonprofit corporation that is designated as a section 501(c)(3), 501(c)(4), 501(c)(5) or 501(c)(6) corporation and that is certified by the city or town to provide that training. This shall not apply to mobile home parks which are in compliance with section 33-1437.