N.Y. Comp. Codes R. & Regs. tit. 9, § 2201.3
(a) Notwithstanding the provisions of section 2201.1 of this Part, effective August 1, 1970:
(2) the maximum rent in effect on July 31, 1970 for any housing accommodation having a maximum rent on such date of $60 or more per month:
(ii) for which no full 15-percent increase has been granted since May 1, 1953, pursuant to such former section 33.2, the maximum rent shall be increased by 15 percent; except that:
(f) The total of (1) the rent increase pursuant to paragraph (a)(2) of this section, (2) any increases granted between January 1, 1970 and December 31, 1971, inclusive, pursuant to section 2202.8, 2202.9 or 2202.10 of this Title, and (3) any increase granted on or after August 1, 1970 pursuant to section 2202.11 of this Title, shall not exceed 15 percent of the 1970 base rent. For the purposes of this subdivision, the 1970 base rent is the maximum rent on July 31, 1970 minus the amount of any increase granted between January 1, 1970 and July 31, 1970, inclusive, pursuant to section 2202.8, 2202.9 or 2202.10 of this Title. This subdivision shall not operate to decrease any maximum rent existing on July 31, 1970.
(g)