S.C. Code Ann. § 4-35-90: Financing discretionary with governing body; assessment rates may vary.

The financing of improvements by assessment, bonds, or other revenues, and the proportions of them, must be in the discretion of the governing body, and the rates of assessments upon property owners within the improvement district need not be uniform but may vary in proportion to improvements made immediately adjacent to or abutting upon the property of each owner in the district as well as other bases as provided in Section 4-35-30.