In the event that any historic landmark or any building, structure,
object or site located within an historic district deteriorates to
the point that, in the best estimate of the Historic Administrative
Officer, the cost of correcting the outstanding code violations equals
more than 25% of the cost of replacing the entire building, structure,
object or site on which the violation occurs, the Administrative Officer
shall:
(1) Serve personally or by certified mail, return receipt requested,
a notice on the owner of the property listing the violations, the
estimate for their abatement and the replacement cost of the improvements;
and
(2) Stating that, if the owner does not take all necessary remedial action
within 60 days, or such extensions, the Historic Administrative Officer
may enter upon the property and arrange the abatement of such violations
and cause the cost thereof to become a lien on the property.