Ohio Rev. Code § 303.41: Special assessments.

A board of county commissioners may levy assessments against specially benefited lots or lands within a county renewal area or areas for any purpose within or without such area or areas for which special assessments may be levied by a county. In the exercise of such power to levy special assessments, the provisions of, including but not limited to Chapters 5555., 5559., 6103., and 6117. of the Revised Code, shall control. A board may include among such specially benefited lots or lands any or all lots or lands then or thereafter owned by the county, provided that the specially benefited lots or lands may consist entirely of county-owned property.