Ohio Revised Code Title III. Counties § 315.18

On the application of any person producing to the county engineer a certificate from the proper officer, the engineer or the engineer's deputy may survey all lands that have been sold for taxes, which lie within the engineer's county.  When a portion of any land or lot has been sold for taxes, and, after the sale and before a survey of the land or lot, the land or lot is set off to another county by the erection of a new county or change of county lines, the engineer of the county in which the sale was made may make the survey, and the county auditor of the same county shall make the deed.