N.Y.C. Admin. Code § 27-2106: § 27-2106 Registration statement; proof of contents.

a. The failure of the owner or lessee of an entire multiple dwelling to produce the receipt issued by the department acknowledging the filing of a registration statement, or the failure of a managing agent to produce the receipt issued by the department acknowledging the filing of a notice of termination, shall be prima facie evidence of failure to comply with the provisions of this article.

b. Any such registration statement shall be deemed prima facie proof of the statements therein contained in any action or proceeding instituted by a city agency or by a tenant against the owner, lessee of an entire multiple dwelling or managing agent.