S.D. Codified Laws § 10-13-45
Any contractor that has constructed or is constructing a single-family dwelling for the purpose of selling the dwelling to be occupied as a single-family dwelling may apply to have the property specifically classified for the purpose of taxation pursuant to §§ 10-13-39 to 10-13-40.3, inclusive, as an owner-occupied single-family dwelling. For the purposes of this section, a single-family dwelling is a house, condominium apartment, residential housing consisting of four or less family units, town house, or town home, which may be assessed and taxed as a separate unit, including an attached or unattached garage and the parcel of land upon which the structure is situated as recorded in the records of the director of equalization. A contractor may only have a maximum of four dwellings classified as owner-occupied single-family dwellings. If any portion of the space is or has been occupied, only the portion of the dwelling not currently or previously occupied shall be classified as an owner-occupied single-family dwelling. The contractor shall comply with the application provisions imposed on the owner-occupant pursuant to §§ 10-13-39 to 10-13-40.3, inclusive. However, no dwelling, pursuant to this section, may be classified as an owner-occupied single-family dwelling for more than two consecutive years.
SDCL 10-13-45