S.D. Codified Laws § 1-16H-31.6 (2026)
A copy of the declaration of taking filed pursuant to § 1-16H-31.2 and any amendments thereto shall be served with the condemnation petition or by mailing a copy thereof to each of the known defendants by registered mail at the defendant's last known post office address.
Source: SL 2005, ch 12 , § 6.