A lien may be created by contract, to take immediate effect, as security for performance of obligations not then in existence.
S.D. Codified Laws § 44-1-5
Security for performance of future obligations--Creation of lien
Source: CivC 1877, § 1705; CL 1887, § 4329; RCivC 1903, § 2025; RC 1919, § 1530; SDC 1939, § 39.0104.
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.