S.D. Codified Laws § 10-4-24
The homestead as defined by law, except a homestead consisting of a mobile home, when owned and occupied by the owner and his family as a home at the time of assessment shall be exempt from any tax imposed by the Legislature to defray the expenses of the state, or to pay any deficiency thereof. Each person liable to assessment and taxation shall separately list his or her homestead, giving the exact description thereof at the time of the assessment and shall give to the director of equalization at the time of assessment a sworn statement in writing on a form prescribed by the secretary of revenue and provided by the county auditor setting forth the legal description of the premises claimed as the homestead, and in case such homestead is situated within a shop, store, or other building used for business purposes shall specifically set forth the exact description of the portion of such store, shop, or other building being used by the owner thereof as a dwelling, and the director of equalization shall divide the valuation so that the portion claimed as a homestead shall be listed and valued separately from the business portion of said premises and the county auditor of the county where such homestead is situated shall exclude such homestead from his total assessment in determining the amount of the state tax. Nothing herein shall be construed to exempt such homestead from any tax legally imposed for county, township, municipality, or school purposes.
SDCL 10-4-24