N.Y. Comp. Codes R. & Regs. tit. 3, § 419.6
(a) Servicers shall establish and maintain:
(b) Every welcome packet and periodic statement, including as applicable either the monthly mortgage statement or annual coupon book, and annual statement pursuant to section 419.5(a) of this Part that is provided to a borrower, and any website maintained by the servicer, shall clearly and conspicuously state:
(d) In addition to the information required to be disclosed under this section, a servicer may, at its option, provide any other information regarding the servicing of the loan that it believes would be helpful to a borrower, provided that such additional information does not contradict or obscure the required disclosures.
(1) Acknowledgement of complaint. Within five business days of receiving a complaint from a borrower, the servicer shall provide to the borrower a written response that:
(2) A servicer may request supporting documentation from a borrower in connection with the investigation of a complaint, but may not:
(3) Response to complaint.
(i) Upon receiving a borrower complaint, a servicer must conduct a reasonable investigation and either:
(ii) Time limits.
(a) In general. A servicer shall comply with the requirements of subparagraph (i) of this paragraph:
(2) prior to the date of a scheduled foreclosure sale or within 15 business days after the servicer receives the complaint, whichever is earlier, for complaints relating to:
(iii) If the servicer has determined that no error occurred or that no action is warranted to correct a servicing-related issue, the servicer shall provide a borrower with copies of documents and information relied upon by the servicer in making its determination that no error occurred or that no corrective action is warranted within 15 business days of receiving the borrower’s request for such documents. If a servicer withholds documents relied upon because it has determined that such documents constitute confidential, proprietary or privileged information, the servicer must:
(e) Borrower complaints.
A servicer shall comply with the requirements of this section for any written complaint, including those transmitted electronically, from a borrower that includes the name of the borrower, information that enables the servicer to identify the borrower’s mortgage loan account, and the nature of the borrower’s complaint.