S.C. Code § 5-27-160
It shall be unlawful to sell and convey lots or parcels of real estate subdivided into lots and streets, situated within five miles of a city having a population of thirty-five thousand or more, unless and until a map or plat has been approved by the city engineer of the city constituting the county seat in the county in which such lot or parcel is located and until such map, with the approval of such city engineer, has been duly recorded in the office of the clerk of the court of common pleas or of the register of deeds for such county in which it is located. If the city engineer shall disapprove the plans submitted to him or if his rulings shall be unsatisfactory to those persons submitting such plans an appeal may be had to the city council or other governing body of the city.
S.C. Code § 5-27-160