S.C. Code Ann. § 30-7-10

All deeds of conveyance of lands, tenements, or hereditaments, either in fee simple or for life, all deeds of trust or instruments in writing conveying estate, creating a trust in regard to the property, or charging or encumbering it, all mortgages or instruments in writing in the nature of a mortgage of any real property, all marriage settlements, or instruments in the nature of a settlement of a marriage, all leases or contracts in writing made between landlord and tenant for a longer period than twelve months, all statutory liens on buildings and lands for materials or labor furnished on them, all statutory liens on ships and vessels, all certificates of renunciation of dower, all contracts for the purchase and sale of real property, all assignments, satisfactions, releases, and contracts in the nature of subordinations, waivers, and extensions of landlords' liens, laborers' liens, sharecroppers' liens, or other liens on real property created by law or by agreement of the parties and generally all instruments in writing conveying an interest in real estate required by law to be recorded in the office of the register of deeds or clerk of court in those counties where the office of the register of deeds has been abolished or in the office of the Secretary of State delivered or executed after July 31, 1934, except as otherwise provided by statute, are valid so as to affect the rights of subsequent creditors (whether lien creditors or simple contract creditors), or purchasers for valuable consideration without notice, only from the day and hour when they are recorded in the office of the register of deeds or clerk of court of the county in which the real property affected is situated. In the case of a subsequent purchaser of real estate, or in the case of a subsequent lien creditor on real estate for valuable consideration without notice, the instrument evidencing the subsequent conveyance or subsequent lien must be filed for record in order for its holder to claim under this section as a subsequent creditor or purchaser for value without notice, and the priority is determined by the time of filing for record.