N.Y.C. Admin. Code § 20-398: § 20-398 Power to investigate.

If the commissioner upon reasonable cause should believe that any licensee or any other person has violated any of the provisions of this subchapter or any other law, relating to a home improvement business, he or she shall have the power to make such investigation as he or she shall deem necessary, and to the extent necessary for this purpose, he or she may examine such licensee or any other persons and shall have the power to compel the production of all relevant books, records, accounts, documents or other records.