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Re-Assessment 2017

Missouri Revised Statute - Chapter 137 requires that all counties re-assess real estate property on the first day of the year in the odd years. January 1st, 2017 is the current date of assessment. All real property values are set on this date.

Re-assessment is the process that helps to validate that real property is valued at current market value. All real property in Clay County is valued with uniform and consistent procedures following Missouri Revised Statutes - Chapter 137. Over time the value of property changes due to market conditions, location, condition of property, and other physical and economic factors. Some property values change more rapidly than others. Reassessment identifies changes in market value, along with property condition to determine current market value.

The Assessor's Office, on the date of assessment, is assigned the task of assessing or valuing real property at Market Value.

When determining a property classification (Agricultural, Residential or Commercial) the Clay County Assessor's Office follows Missouri Revised Statute - Chapter 137, specifically 137.016, 137.017 and 137.021.

Approximately April 1st, Change of Valuation Notices are mailed to property owners whose property has increased in value, and all commercial property. Change of Valuation Notices for all properties are available online.


All Property owners have the right to appeal real estate property values.


*Note Regarding BOE Appeal Dates - SB 711 (2008) made the 2nd Monday in July the BOE appeal date for non-first class counties and the St. Louis City, but did NOT amend section 137.385, RSMo controlling the date for appealing in 1st class counties (i.e. Clay County). Consequently, the deadline for appealing to the BOE in 1st class counties remains "before the third Monday in June."

Update to Parcel Search

The parcel search system has been updated with general information on commercial and agricultural parcels. This information includes location, ownership, value, and deed references. 

Mass Appraisal Definition - IAAO Standard on Mass Appraisal of Real Property

Market value for assessment purposes is generally determined through the application of mass appraisal techniques. Mass appraisal is the process of valuing a group of properties as of a given date using common data, standardized methods, and statistical testing. To determine a parcel's value, assessing officers must rely upon valuation equations, tables, and schedules developed through mathematical analysis of market data.

Unless required by law, values for individual parcels should not be based solely on the sale price of a property; rather, valuation schedules and models should be consistently applied to property data that is correct, complete, and up-to-date.


contact us

Cathy Rinehart
Clay County Assessor

Clay County Courthouse
1 Courthouse Square
Liberty, Missouri 64068

phone: (816) 407-3500
fax: (816) 407-3501

Office Hours


Clay County Courthouse Annex
1901 NE 48th St
Kansas City, Missouri 64118

phone: (816) 407-3470
fax: (816) 407-3461
business: (816) 407-3460

Office Hours


234 W. Shrader St, Suite D
Liberty, Missouri 64068

phone: (816) 407-3370
fax: (816) 407-3371

Office Hours