S.D. Codified Laws § 15-10-3
Current with legislation signed by the governor on or before 3/6/2024
From the time of filing only shall the pendency of the action be constructive notice to a purchaser or encumbrancer of the property affected thereby. Every person whose conveyance or encumbrance is subsequently executed or subsequently recorded shall be deemed a subsequent purchaser or encumbrancer and shall be bound by all proceedings taken after the filing of such notice, to the same extent as if he were a party to the action.
SDCL 15-10-3