S.C. Code § 31-3-770
At any time after a county is excluded from the area of operation of a regional housing authority as provided in Sections 31-3-1060 to 31-3-1080 the legislative delegation of any such county may adopt a resolution declaring that there is a need for a housing authority in the county, if the legislative delegation shall find such need in the manner required by this chapter for a county housing authority to function. Thereupon a public body corporate and politic to be known as the housing authority of the county shall exist for such county and may transact business and exercise its powers. Nothing contained herein shall be construed as preventing such county from thereafter being included within the area of operation of a regional housing authority as provided in this chapter.
S.C. Code § 31-3-770