S.D. Codified Laws § 58-27-34
Real property shall not be deemed to be encumbered within the meaning of § 58-27-32 by reason of the existence of instruments reserving mineral, oil, timber, or similar rights, rights-of-way, sewer rights, rights in walls, nor by reason of any liens for taxes or assessments not yet due, or on account of liens not delinquent for community recreational facilities, or for the maintenance of community facilities, nor by reason of building restrictions or other restrictive covenants common to the community in which the property is located, nor by liens for service and maintenance of water rights where not delinquent, nor when such real property is subject to lease under which rents or profits are reserved to the owner if in any event the security for the loan or investment is a first lien upon the real property.
SDCL 58-27-34