Ohio Revised Code Title III. Counties § 303.38

Every board of county commissioners may acquire by eminent domain any interest in real property, whether owned privately or publicly, including a fee simple title thereto, which it determines necessary for or in connection with a county renewal project within the county, and this power may be exercised in the manner provided in section 307.08 of the Revised Code, or it may be exercised in the manner now or which may be hereafter provided by any other statutory provisions for the exercise of the power of eminent domain by boards of county commissioners.  Real property belonging to the United States, the state of Ohio, or any political subdivision of the state, or municipalities shall not be acquired under this section without its consent.