(a) It shall be the duty of any owner/occupant of any premises, upon notice from the director of planning or his or her duly designated representative, to cause the official number to be placed on any building so owned or occupied.

(b) Such numbering shall be accomplished in the manner required within 30 days after service of such notice.

(c) It shall be unlawful for any owner/occupant to retain or use or to permit to be retained or used upon any building any number other than the number designated by the director of planning or his or her duly designated representative. (Code 1979, § 34-126)