N.Y.C. Charter § 649: Section 649. Inspection.

The commissioner, any deputy commissioner, borough superintendents, inspectors, or any officer of the department authorized in writing by the commissioner or a borough superintendent to act in his borough may, in accordance with law, for the purpose of performing their respective official duties, enter and inspect any building, structure, enclosure, premises or any part thereof or anything therein or attached thereto; and any refusal to permit such entry or inspection shall be a misdemeanor triable in criminal court and punishable upon conviction by not more than thirty days imprisonment or by a fine of not more than one hundred dollars, or both.