Phoenix — Ch. 22 Art. VI Property Maintenance § 22-311

(a) Definitions. The following words, terms and phrases, when used in this section, shall have the meanings ascribed to them in this subsection, except where the context clearly indicates a different meaning:
Structure unfit for human occupancy means a structure that is found by the village or its designee to be unsafe, unlawful, or because of the degree in which it lacks maintenance or is in disrepair, is unsanitary, vermin or rodent infested, contains filth and contamination, or lacks ventilation, illumination, sanitary or heating facilities or other essential equipment required by this article, or because its location constitutes a hazard to its occupants or to the public.
Unlawful structure means a structure that is found, in whole or in part, to be occupied by more persons than permitted under this article, or was erected, altered or occupied contrary to law.
Unsafe equipment means any boiler, heating equipment, elevator, moving stairway, electrical wiring or device, flammable liquid container or other equipment on the premises or within the structure which is in such disrepair or condition that it is found to be a hazard to life, health, property or the public or occupants of the premises or structure. Unsafe equipment may contribute to the finding that the structure is unsafe or unfit for human occupancy or use.
Unsafe structure means a structure that, in which all or part thereof, is found to be dangerous to life, health, property, or the safety of the public or its occupants because it is so damaged, decayed, dilapidated, structurally unsafe, or of such faulty construction or unstable foundation that it is likely to partially or completely collapse.
(b) Determination. When a structure or part thereof is found by the chief building inspector to be unsafe, or when a structure or part thereof is found unfit for human occupancy or use, or is found unlawful, it may be condemned pursuant to the provisions of this article and may be placarded and vacated. It shall not be reoccupied without the approval of the village or its designee. Unsafe equipment shall be placarded and placed out of service.
(c) Closing of vacant structures. If the structure or part thereof is vacant and unfit for human habitation, occupancy or use, and is not in danger of structural collapse, the village or its designee may post a placard of condemnation on the premises and may order the structure closed up so it will not be an attractive nuisance to youngsters. Upon failure of the owner to close up the premises within the time specified in the order, the village or its designee shall cause it to be closed through any available public agency or by contract or arrangement by private persons and the cost thereof shall be charged against the real estate upon which the structure is located and shall be a lien upon such real estate.