N.Y. Comp. Codes R. & Regs. tit. 22, § 835.5
(b) Claims for compensation in excess of the statutory limits set by Family Court Act section 245 and Judiciary Law section 35 shall be accompanied by a sworn statement by the attorney describing the nature of the proceeding, specifying the time and services rendered and expenses incurred, and detailing the circumstances deemed to be extraordinary justifying a fee in excess of the statutory limits. In the absence of the attorney's affidavit in support of the excess fee, compensation in excess of statutory limits shall not be allowed.
(1) The following are among the factors which may be considered in determining whether extraordinary circumstances exist justifying a fee in excess of statutory limits: