Ohio Rev. Code § 719.05
The mayor of a municipal corporation shall, immediately upon the passage of a resolution under section 719.04 of the Revised Code, declaring an intent to appropriate property, for which but one reading is necessary, cause written notice to be given to the owner of, person in possession of, or person having an interest of record in, every piece of property sought to be appropriated, or to the authorized agent of the owner or other such person. Such notice shall be served by a person designated for the purpose and return made in the manner provided for the service and return of summons in civil actions. If such owner, person, or agent cannot be found, notice shall be given by publication once a week for three consecutive weeks in a newspaper of general circulation in the municipal corporation or as provided in section 7.16 of the Revised Code, and the legislative authority may thereupon pass an ordinance by a two-thirds vote of all members elected thereto, directing such appropriation to proceed.
R.C. § 719.05