Violation notices and other orders or notices referred to in these
regulations shall be served on the property or premises owner or the
owner's executors, legal representatives, agents, lessees, or any
tenant or other person occupying the premises or other person having
a vested or contingent interest in the premises, either personally
or by certified mail, addressed to the last known address, or by facsimile,
if any, to the owner or one of the owner's executors, legal representatives,
agents, lessees, or other person having a vested or contingent interest
in same, as shown by the last preceding completed record of the Receiver
of Taxes or in the office of the Columbia County Clerk.