Section 145

Notices and orders under this Ordinance, may be served by delivering the same to the person to whom they are addressed or, if addressed to two or more persons by delivering the same to or at the residence of any of those persons, and when addressed to the owner of any premises they may also be served by delivering the same or a copy thereof to some person upon the premises or * by fixing the same upon some conspicuous part of the premises.

Owner of premises need not be further designated.