S.D. Codified Laws § 58-33-31
No person may require as a condition precedent to loaning money upon the security of any real or personal property, or to the renewal or extension of any loan or mortgage, or to the selling of any property under contract, that the owner of the property to whom the money is to be loaned, or the vendee of the property being sold, shall place, continue, or renew any policy of insurance covering or to cover such property or covering any liability relating to such property or the use thereof, through a particular insurance producer or in a particular insurer or type of insurer or insurance producer. However, this provision does not prevent the reasonable exercise by any such the lender or vendor of the right to approve or disapprove of the insurer selected to underwrite the insurance on a reasonably nondiscriminatory basis. Any violation of this section is a Class 2 misdemeanor.
SDCL 58-33-31