Notice of the public hearing shall be given in writing by personal service or by certified mail, return receipt requested, at least fifteen (15) days prior to the hearing, or if service cannot be had by either of these modes of service, then service may be had by publication in a newspaper qualified to publish legal notices for two (2) successive weeks, the owner, occupant, lessee, mortgagee or agent and all other persons having an interest in said property as shown by the land records of the Recorder of Deeds of Lawrence County, Missouri, with the second such publication occurring at least seven (7) days prior to the hearing. Any party may be represented by counsel at the public hearing. Lessees or occupants assuming a possessory interest in the property within fifteen (15) days of the public hearing are not entitled to notice under this Section.