(1) upon the owner last registered with the department of housing preservation and development pursuant to article forty-one of chapter twenty-six of the administrative code of the city of New York and in Nassau, Suffolk, Rockland and Westchester counties upon the person set forth as the owner on the last recorded deed to the rented property by delivering to and leaving personally with the person designated pursuant to article forty-one of chapter twenty-six of such code as managing agent of the subject dwelling, and in Nassau, Suffolk, Rockland and Westchester counties upon the person designated as the managing agent of the rented property if one shall have been designated, a copy of the notice of petition and petition;

(2) upon a mortgagee or lienor of record, by registered or certified mail, return receipt requested, at the address set forth in the recorded mortgage or lien. b. If such personal service upon the person designated pursuant to article forty-one of chapter twenty-six of the administrative code of the city of New York as managing agent of the subject dwelling and in Nassau, Suffolk, Rockland and Westchester counties upon the person set forth as the owner on the last recorded deed to the rented property cannot be made with due diligence, service upon such last registered owner shall be made by affixing a copy of the notice and petition upon a conspicuous part of the subject dwelling; and in addition, within two days after such affixing, by sending a copy thereof by registered or certified mail, return receipt requested, to the owner at the last address registered by him with the department of housing preservation and development or, in the absence of such registration, to the address set forth in the last recorded deed with respect to such premises. 6. Notice to non-petitioning tenants. Notice of the proceeding shall be given to the non-petitioning tenants occupying the dwelling by affixing a copy of the notice of petition and petition upon a conspicuous part of the subject dwelling.