S.D. Codified Laws § 9-53-7
The governing body shall consider the survey and investigation and the plat and schedules prepared for such public convention hall. If it appears to the governing body that there is a public need for such a facility; that there is sufficient privately owned properties situated in such proposed district, and estimated revenue from such facility and that the plan to finance the acquisition and construction as well as the maintenance of the public convention hall is financially feasible, it shall prepare and file in the office of the city auditor or town clerk a proposed resolution of necessity which shall describe the benefit district for the purpose of assessment, declaring the acquiring of a site, building or improvement of a public convention hall a necessity, describe the location of the proposed public convention hall and a general description of the construction to be placed thereon, the estimated cost to acquire and improve such public convention hall, and the estimated annual cost of maintaining such public convention hall, state either that all or what cost of the public convention hall is to be paid by special assessment and what portion is expected to be paid from the revenue to be derived from the public convention hall, shall state that the cost to be assessed shall be apportioned according to the benefits to accrue to each lot or tract as determined by the governing body, and shall state that a plat and schedule are on file in the office of the city auditor or the town clerk giving further details of the proposed project.
SDCL 9-53-7