Ohio Revised Code Title III. Counties § 303.212

(A) Except as provided in division (B) of this section, sections 303.01 to 303.25 of the Revised Code do not confer on any county rural zoning commission, board of county commissioners, or board of zoning appeals the authority to prohibit or restrict the location of a permanently sited manufactured home, as defined in division (C)(6) of section 3781.06 of the Revised Code, in any district or zone in which a single-family home is permitted.

(B) Division (A) of this section does not limit the authority of a county rural zoning commission, board of county commissioners, or board of zoning appeals to do either of the following:

(C) This section does not prohibit a private landowner from incorporating a restrictive covenant in a deed, prohibiting the inclusion on the conveyed land of manufactured homes, as defined in division (C)(4) or (6) of section 3781.06 of the Revised Code, or of travel trailers, park trailers, and mobile homes, as defined in section 4501.01 of the Revised Code. This division does not create a new cause of action or substantive legal right for a private landowner to incorporate such a restrictive covenant in a deed.