S.C. Code Ann. § 16-11-760
It shall be unlawful for any person to park a motor-driven or other vehicle on the private property of another without the owner's consent, if the property owner shall post a notice in a conspicuous place on the borders of such property near each entrance prohibiting such parking. Proof of the posting shall be deemed and taken as notice conclusive against the person making entry.
Any motor-driven or other vehicle found parked on private property as provided in this section may be towed away and stored at the expense of the vehicle owner, and such towing and storage charge shall constitute a lien against such vehicle.
It shall be lawful for any proprietor, owner and operator of any storage place, garage or towing service of whatever kind, which shall have towed away and stored any such vehicle, to have the vehicle sold at public outcry to the highest bidder upon the expiration of thirty days after written notice by certified mail has been given to the owner of the vehicle at his last known address that the towing and storage charges are due and such vehicle shall be sold by any regular or special constable appointed by any court of competent jurisdiction in the county in which the towing was performed or the vehicle was stored. Any regular or special constable shall, before selling the vehicle, advertise it for at least fifteen days by posting a notice in three public places in the county of sale, one of which shall be the courthouse door or bulletin board. He shall, after deducting all proper costs and commissions, pay to the claimant the money due to him, taking his receipt for it, after which he shall deposit the receipt, as well as the items of costs and commissions, with the remainder of the money or proceeds of the sale, in the office of the clerk of the court, subject to the order of the owner thereof, or his legal representatives, and shall issue a bill of sale to the highest bidder. The regular or special constable who shall sell the vehicle shall be entitled to receive the same commissions as are allowed by law for the sale of personal property by constables. Any such sale shall be made for cash to the highest bidder after the notice shall have been given and the true result of such sale shall be forthwith made known to the original owner of the article so sold by notice addressed to the last known address of such owner.
Provided, however, that any such sale shall be subject to any outstanding lien recorded on the title certificate for such vehicle, which lien shall remain in full force and effect to the same extent as if such sale had not been held. In the event that the title certificate shows an unsatisfied lien, notice shall also be given to the lienholder in addition to the owner as above provided, and in addition thereto the officer selling said vehicle shall furnish to the lienholder the name and address of the purchaser of said vehicle. The bill of sale to the highest bidder shall clearly state that said vehicle is subject to the lien or liens of recorded lienholders.
Any person violating the provisions of this section is guilty of a misdemeanor and upon conviction must be punished by a fine of not less than twenty-five dollars and not exceeding one hundred dollars or by imprisonment for a term not exceeding thirty days, and this punishment is in addition to the other remedies which are authorized in this section.