Mo. Rev. Stat. § 249.949
Assessment to be a lien on property.
249.949. Assessment to be a lien on property. — An assessment authorized under the provisions of sections 249.925 to 249.955 shall be a lien, from the date of the assessment, on the property against which it is assessed on behalf of the city or county assessing the same to the same extent as a tax upon real property.
(L. 1995 H.B. 88 § 16)