N.Y. Multiple Dwelling Law § 193: Frame buildings

§ 193. Frame buildings. No frame building shall be erected or

maintained upon the same lot with a dwelling converted after April

twenty-eighth, nineteen hundred thirty, nor shall any frame building not

occupied on April thirteenth, nineteen hundred forty, as a multiple

dwelling be altered or converted to such use; except that if the walls

of a frame converted dwelling are faced with a veneer of brick and the

entrance story is occupied by not more than one family, such entrance

story may be altered so that it may be occupied by two families.