Mo. Rev. Stat. § 198.345
Nothing in sections 198.200 to 198.350 shall prohibit a nursing home district from establishing and maintaining apartments for seniors that provide at a minimum housing, food services, and emergency call buttons to the apartment residents in any county of the third classification without a township form of government and with more than twenty-eight thousand two hundred but fewer than twenty-eight thousand three hundred inhabitants or any county of the third classification without a township form of government and with more than nine thousand five hundred fifty but fewer than nine thousand six hundred fifty inhabitants. Such nursing home districts shall not lease such apartments for less than fair market rent as reported by the United States Department of Housing and Urban Development.
(L. 2005 H.B. 58 merged with S.B. 210)