N.Y. Multiple Residence Law § 11

§ 11. Old dwellings. Except as required in section nine and articles\nthree and four, nothing in this chapter shall be construed to require\nany change in the construction, use, or occupancy of any old or other\nexisting multiple dwelling occupied as such on July first, nineteen\nhundred fifty-two, which on such date is in compliance with the\nprovisions of all statutes, local laws, ordinances, rules and\nregulations applicable thereto.\n