S.C. Code Ann. § 28-2-230

(A) If the landowner rejects or does not accept the amount tendered as just compensation within the thirty-day period, then the condemnor may file the Condemnation Notice with the clerk of court and deposit with the clerk the amount of just compensation stated in the notice. If the Condemnation Notice is filed with the clerk of court, the clerk shall charge a fee for filing the notice which must be the same as the fee charged for filing a summons and complaint. (B) The condemnor then shall serve written notice of the action upon the condemnees and may proceed to take possession of the property or interest in the property described in the Condemnation Notice pursuant to Section 28-2-90. The condemnor may not abandon the condemnation action after taking possession if material alterations have been made in the property, except with consent of the landowner.