S.C. Code § 55-15-60
Whenever the acquisition of real property for a program or project undertaken by the public authority will result in the displacement of any person, the public authority shall assure that, within a reasonable period of time, prior to displacement there will be available, in areas not generally less desirable in regard to public utilities and public and commercial facilities and at rents or prices within the financial means of the families and individuals displaced, decent, safe, and sanitary dwellings, equal in number to the number of and available to such displaced persons who require such dwellings and reasonably accessible to their places of employment; except that regulations issued pursuant to Section 55-15-70 may prescribe situations when these assurances may be waived.
S.C. Code § 55-15-60