Reports, complaints or notices issued by the Building Inspector pursuant hereto shall be served upon persons either personally, or by registered mail to the last known address of the person or persons. If the whereabouts of any person is unknown and the same cannot be ascertained by the Building Inspector in the exercise of reasonable diligence, and the Building Inspector or order upon such person may be made by publishing the same once a week for two successive weeks in the official newspaper of the city, service being deemed complete upon the date of the last publication. A copy of such complaint or order shall be posted in a conspicuous place on the premises affected by the complaint or order and shall be recorded in the office of the Clerk of the District Court of the county wherein the dwelling or building is located.
(2005 Code, § 9-804)