S.D. Codified Laws § 43-23-5
Current with legislation signed by the governor on or before 3/6/2024
If any owner of any land who is liable for one-half of the expense of erecting and maintaining a partition fence pursuant to § 43-23-1 neglects or refuses to so erect and maintain one-half of a legal fence on the lines separating his land from adjoining land, the owner of the adjoining land may serve upon the delinquent owner a notice in writing demanding that the delinquent owner shall erect or repair, as the case may be, a legal fence along one-half of such line, describing it, within thirty days from the date of the service of the notice and demand upon him.
SDCL 43-23-5