N.Y. MRE Law § 63

§ 63. Two story transient dwellings. 1. All nursing and convalescent\nhomes, homes for the aged, and boarding and nursery schools, two stories\nin height, shall conform with all of the provisions of article four.\n 2. Except as provided in subdivision one of this section, the only\nprovisions of article four which shall apply to two story transient\ndwellings in existence on July first, nineteen hundred fifty-two, shall\nbe sections sixty, sixty-one, sixty-five, title two and the following:\n a. Every such transient dwelling shall have at least two means of\negress. The first means of egress shall be by an interior stair closed\noff at the top or bottom. The second means of egress shall be by an\nadditional interior stair closed off at the top or bottom or a fire\nstair or fire escape. A second means of egress shall not be required in\na dwelling containing less than thirty sleeping rooms if the sill of the\nsecond story window does not exceed fourteen feet in vertical height\nabove the ground or other safe landing place immediately below such\nwindow sill.\n b. Where it is impractical in such transient dwellings to provide a\nsecond required means of egress, the department may order, in lieu\nthereof, additional alterations to the first means of egress and to\nshafts, stairs and other vertical openings to safeguard the occupants of\nthe dwelling, may require the public halls providing access to the first\nmeans of egress to be equipped on both stories with an automatic\nsprinkler system, and may also require automatic sprinkler heads in the\nstair which serves as the only means of egress.\n c. Where two means of egress are required by this section and one is\nan ornamental stair, the provision for closing off the stair at top or\nbottom shall not be applicable to the ornamental stair.\n