Syracuse, N.Y., Rev. Gen. Ord. ch. 27 § 27-115

(a) Unfit premises shall be any premises within the scope of this Code, having any of the following defined defects and may be designated by the director as unfit for human habitation or dangerous to human life or detrimental to health and may be so placarded:
(1) The structure lacks illumination, ventilation, sanitation, heat or other facilities adequate to protect the health and safety of the occupants or the public.
(2) The structure or premises is damaged, decayed, dilapidated, unsanitary, unsafe or vermin infested in such a manner as to create a serious hazard to the health and safety of the occupants or the public.
(3) The structure or premises, because of the location, general conditions, state of premises, or number of occupants, is so unsanitary, unsafe, overcrowded or otherwise detrimental to health and safety that it creates a serious hazard to the occupants or the public.
(4) The structure, because of the failure of the owner or occupant to comply with such notice and orders, issued pursuant to this Code, is unfit for human habitation or dangerous to human life or detrimental to health.
(b) Whenever the director determines that any premises are unfit for human habitation or dangerous to human life or detrimental to health as provided herein, he must include such finding within the notice and order provided for in section 27-114 , along with a statement of his intent to order the premises vacated and to placard said premises, if compliance with the provisions of the notice and order has not been secured.
(c) Whenever a notice and order as provided herein has not been complied with, the director may placard said premises directing the premises or any part thereof to be vacated, the tenants affected thereby shall be notified of such designation.
(d) Any premises ordered placarded and vacated as provided herein, shall be vacated within such reasonable time as the director may specify in the order. No such premises shall again be used or the placard removed until written approval is secured from the director; as evidenced by the issuance of the appropriate certificate prior to reoccupancy.
(e) The owner, or person responsible for any such premises which have been designated as unfit for human habitation or dangerous to human life or detrimental to health shall make such premises safe and secure for the protection of the public.
(f) The owner of the premises designated as unfit for human habitation may correct the violation, regardless of cost, provided that the requirements of the applicable building code are satisfied.
(g) In the event that premises designated as unfit are reoccupied prior to the issuance of written approval for reoccupancy, after having been vacated pursuant to such order, then in such event the act or omission of the owner or person responsible therefor which caused or permitted the unfit premises to be reoccupied shall be deemed a serious violation. Such serious violation shall commence on the date the unfit premises are reoccupied and continue until a written approval for reoccupancy is issued or the unfit premises are vacated again and made secure. Each day that such violation persists shall constitute a separate serious violation.