- Complaints or orders issued by an inspector shall be served upon persons either personally or by registered or certified mail. When service is made by registered or certified mail, a copy of the complaint or order may also be sent by regular mail. Service shall be deemed sufficient if the registered or certified mail is unclaimed or refused, but the regular mail is not returned by the post office within 10 days after the mailing. If regular mail is used, a notice of the pending proceedings shall be posted in a conspicuous place on the premises affected.
- If the identities of any owners or whereabouts of persons are unknown and the same cannot be ascertained by the inspector in the exercise of reasonable diligence, or if the owners are known but have refused to accept service by registered or certified mail, the inspector shall make an affidavit to that effect, stating the steps taken to determine and locate the persons in interest, then the serving of such complaint or order upon such owners or persons may be made by publication in a newspaper having general circulation in the City at least once no later than the time at which personal service would be required under Sec. 11.6.7. Where such service is by publication, a notice of the pending proceedings shall be posted in a conspicuous place on the premises thereby affected.