Ohio Rev. Code § 711.06
A proprietor of lots or grounds in a municipal corporation, who subdivides or lays them out for sale, shall make an accurate plat of such subdivision, describing with certainty all grounds laid out or granted for streets, alleys, ways, commons, or other public uses. The proprietor shall superimpose such plat upon the land from which such plat is drawn and shall make an accurate background drawing of any metes-and-bounds descriptions of the lands from which such plat is drawn. Lots sold or intended for sale shall be numbered by progressive numbers or described by the squares in which situated, and the precise length and width shall be given of each lot sold or intended for sale. Such plat shall be subscribed by the proprietor, or his agent duly authorized by writing, and acknowledged before an officer authorized to take the acknowledgment of deeds, who shall certify the acknowledgement of the instrument, and such plat shall be recorded in the office of the county recorder.
R.C. §711.06