N.Y. Multiple Dwelling Law § 83

§ 83. Janitor or housekeeper. Whenever there are thirteen or more\nfamilies occupying any multiple dwelling and the owner does not reside\ntherein, there shall be a janitor, housekeeper or some other person\nresponsible on behalf of the owner who shall reside in said dwelling, or\nwithin a dwelling located within a distance of two hundred feet from\nsaid dwelling, and have charge of such dwelling, except that where two\nor three multiple dwellings are connected or adjoining, one resident\njanitor shall be sufficient. In every garden-type maisonette dwelling\nproject erected after April eighteenth, nineteen hundred fifty-four,\nadequate personnel shall be provided for the lawful care and maintenance\nof such project.\n