S.D. Codified Laws § 10-25-20
If any real property has been bid in by the treasurer in the name of the county at the tax certificate sale and the tax certificate has not been redeemed from the sale or assigned by a certificate of purchase, and sufficient time has elapsed since the sale that a tax deed may be properly issued, the treasurer may issue a tax deed for the real property to the county. However, if the treasurer fails, refuses, or neglects to take proceedings for the issuance of a tax deed to the county, the treasurer shall, upon written application of the county commissioners, or the governing body of any municipality, school district, or township within the county that would be a beneficiary of the tax for which the property was sold, may give notice of intention to take tax deed as required by law. After the notice has been given and no redemption has been made within the time allowed, the treasurer shall issue a tax deed for the real property to the county. If the treasurer fails, refuses, or neglects to comply with the provisions of this section, the treasurer's duty to comply may be enforced by writ of mandamus.
SDCL 10-25-20