If any person entitled to notice is not found within the city limits, service shall be made by depositing a copy of such notice in the United States post office, properly enclosed in a sealed envelope and with the postage thereon fully prepaid. Such mail shall be registered or certified, return receipt requested, and addressed to the person entitled thereto at the addresses of such person as it appears on the last equalized assessment roll of the county or as known to the director. If no address so appears or is known to the director, then a copy shall be addressed to such person at the address of the premises involved. Service by registered or certified mail shall be complete on the day of its deposit in the mail. The failure of any owner or other persons to receive such notice shall not affect in any manner the validity of any proceedings taken pursuant to this chapter. One certified copy of the notice shall also be conspicuously posted on the premises at least ten (10) days before the time fixed for the hearing before the hearing officer. (Ord. 2812, 2015)