N.Y. Comp. Codes R. & Regs. tit. 19, § 190.6 – Restrictions on apartments listed.

(a) the apartment information vendor agent has the written authority of the owner to list the apartment; and
(b) the apartment meets the specifications of said tenant as set forth in the standard apartment information vendor contract.

No apartment information vendor or employee thereof shall refer a prospective tenant to an apartment unless: