N.Y.C. Admin. Code § 28-103.13: § 28-103.13 Right of entry.

The commissioner or his or her authorized representatives, in the discharge of their duties, shall have the right to enter upon and inspect, at all reasonable times, any buildings, enclosure, premises, or any part thereof, or any signs or service equipment contained therein or attached thereto for the purpose of determining compliance with the provisions of this code and other applicable building laws and rules. Officers and employees of the department shall identify themselves by exhibiting the official badge or other identification prescribed by the department; and other authorized representatives of the commissioner shall identify themselves by producing and exhibiting their authority in writing signed by the commissioner. If access is not obtained, the commissioner shall have recourse to remedies provided by law to secure entry.