S.D. Codified Laws § 11-7A-6
Any incorporated municipality of this state may acquire, through purchase or gift of the entire property ownership therein, any existing federally owned housing within the corporate boundaries of the municipality and own, operate, maintain, and dispose of such housing, provided that if acquisition be by purchase, the funds for such purchase shall be derived from either otherwise unappropriated, unbudgeted, and unexpended funds in the general fund or from the sale by the municipality of general obligation bonds, such sale to be subject to the limitations of and in the manner and after authorization as provided by law, and provided further that no such acquisition shall be made unless the federal government shall have signified an intention to terminate its operation of such housing within a period of one year in the future.
SDCL 11-7A-6