A notice shall be served upon the owner or one of the owner's executors, legal representatives, agents, lessees or managing agent or managing employee, or a person having a vested or contingent interest in such property. Such notice shall be served personally or shall be forwarded by registered mail addressed to the last known address, if any, of the owner or any one of the persons hereinabove named, the ownership of such property to be determined by the name as it appears on the tax rolls of the Village. Such notice shall contain the address of such premises, a description thereof, a statement of the particulars in which the building or structure is unsafe or dangerous and shall contain an order requiring the same to be made safe and secure or removed. If such notice be forwarded by registered mail, a copy of such notice shall be posted on the premises.