Ohio Revised Code Title III. Counties § 323.70

(A) Subject to this section and to sections 323.71 and 323.72 of the Revised Code, a county board of revision shall conduct a final hearing on the merits of a complaint filed under section 323.69 of the Revised Code, including the validity or amount of any impositions alleged in the complaint, not sooner than thirty days after the service of notice of summons and complaint has been perfected.  If, after a hearing, the board finds that the validity or amount of all or a portion of the impositions is not supported by a preponderance of the evidence, the board may order the county auditor to remove from the tax list and duplicate amounts the board finds invalid or not supported by a preponderance of the evidence.  The auditor shall remove all such amounts from the tax list and duplicate as ordered by the board of revision, including any impositions asserted under sections 715.26 and 715.261 of the Revised Code.

(B) If, on or before the fourteenth day after service of process is perfected under division (B) of section 323.69 of the Revised Code, a record owner files with the clerk of court a motion requesting that the county board of revision order the case to be transferred to a court pursuant to section 323.691 of the Revised Code, the board shall, without conducting a hearing on the matter, promptly transfer the case for foreclosure of that land to a court pursuant to section 323.691 of the Revised Code to be conducted in accordance with the applicable laws.

(C) A county board of revision, in accordance with the Rules of Civil Procedure, may issue subpoenas compelling the attendance of witnesses and the production of papers, books, accounts, and testimony as necessary to conduct a hearing under this section or to otherwise adjudicate a case under sections 323.65 to 323.79 of the Revised Code.