S.C. Code Ann. § 56-5-6320

The consent may be terminated by filing a notice of termination with the clerk of court or register of deeds and the sheriff in the same manner as is provided in Section 56-5-6310 for the consent of the owners. The same percentage of owners shall be required for termination as is required for consent; provided, however, that the heirs, successors or assigns of owners may exercise such right of termination. The termination shall be executed with the same formalities as a deed and shall make reference to the recordation of the original consent and plat. Termination of consent shall become effective thirty days from the date it is filed with the clerk of court or register of deeds.