Mo. Rev. Stat. § 49.470: County commission may alter and repair county buildings, when.

The county commission of each county shall have power, from time to time, to alter, repair or build any county buildings, which have been or may hereafter be erected, as circumstances may require, and the funds of the county may admit; and they shall, moreover, take such measures as shall be necessary to preserve all buildings and property of their county from waste or damage.