S.D. Codified Laws § 10-45A-1.1
The amount of the reduction in income allowed for taxes paid pursuant to subdivision 10-45A-1(5) shall be equal to the real property taxes paid on the principal residence of the claimant. If the residence is a single-family dwelling, then the amount of the reduction shall equal the taxes paid on the residence structure, the platted lot upon which the structure is located or one acre, whichever is less, and the garage, whether attached or unattached. If the residence is not a single-family dwelling, then the reduction shall be equal to the amount of the tax paid on or allocated to the structure and the platted lot upon which the structure is situated or one acre whichever is less, used as a residence by the claimant including the garage, whether attached or unattached.
SDCL 10-45A-1.1