S.D. Codified Laws § 36-21A-12

For the purposes of this chapter, a real estate salesperson is any person who for compensation or consideration is associated with a responsible broker, to sell or offer to sell, or to buy or offer to buy, or to negotiate the purchase, sale, lease, rental, or exchange of real property, or of the property's improvements, or any business opportunity or business, or its goodwill, inventory, or fixtures, or any interest therein, or to sell or offer to sell, or to buy or offer to buy, or to negotiate the purchase, sale, lease, rental, or exchange of a mobile or manufactured home which has been registered under the provisions of chapters 32-3 to 32-5B, inclusive. A salesperson may perform a broker price opinion or comparative market analysis for purposes of purchase, sale, lease, rental, or exchange of real property.