N.Y. Comp. Codes R. & Regs. tit. 3, § 83.10
(a) Holders may charge at closing, simultaneously with the execution of the shared appreciation agreement, the following fees, costs and amounts; provided, however, that the holder discloses same pursuant to section 83.7(b)(1) of this Part and provided further that the costs or payments are actually paid or will actually be paid by the holder to a third-party provider:
(7) such other fees as may be specifically authorized by State or Federal laws and regulations governing the origination of mortgage loans or loan modifications.
(b) Interest rate determination.
The rate or rates of interest that a holder may charge or receive on a modified mortgage loan shall be the rate or rates agreed upon by the holder and the mortgagor, provided, however: