S.D. Codified Laws § 32-6B-19
Any person licensed under this chapter, who sells vehicles at locations other than the principal place of business, shall obtain a supplemental license for each auxiliary or supplemental lot not contiguous to the location for which the original license is issued. If the license is granted, the licensee may be permitted to use unimproved lots and premises for sale, storage, and display of vehicles. Supplemental lots and premises shall be located within the county of the principal place of business of the applicant and shall meet local zoning codes or ordinances. No supplemental license is required for display of vehicles within the corporate limits of a municipality if the vehicle dealer is licensed or if one or more licensed vehicle dealers wish to display their vehicles on a temporary supplemental lot as defined in § 32-6B-1.4.
SDCL 32-6B-19