S.C. Code § 27-23-60
All estates, interests of freehold or terms of years, and any uncertain interests of, in, to or out of any lands, tenements or hereditaments, made or created by livery or seizin only or by parol and not put in writing and signed by the parties so making or creating them, or their agents thereunto lawfully authorized by writing, shall have the force and effect of estates at will only and shall not, either in law or equity, be deemed or taken to have any other or greater force or effect, any consideration for making any such parol lease or estate or any former law or usage to the contrary notwithstanding, except leases not exceeding the term of one year from the time of entry whereupon the rent reserved to the landlord during such term shall amount unto two-thirds parts, at least, of the full improved value of the thing demised.
S.C. Code § 27-23-60