As Chief Assessor, the County Auditor is required by Ohio Revised Code to set a fair market value on all real property parcels in the county for taxing purposes. State Law requires the entire county is appraised and every parcel visited every six years during a sexiennial reappraisal. Coshocton County is scheduled for a county-wide reappraisal in tax year 2015, payable in 2016 . Three years after each appraisal, the records are adjusted upon recommendation of the Ohio Department of Taxation. This triennial update is not done by property inspection, but rather by sales to county market value ratio. The last triennial update was completed in tax year 2012, payable in 2013. Every time either a reappraisal or triennial is done, the Department of Taxation also orders the County Auditor to implement the newest set of soil values for CAUV purposes .

Between mandatory reappraisals or updates, property values can change when a form is filed to report new construction, destruction or demolition of structures, or to request a board of revision review. It is the property owner’s responsibility to file the new construction or destruction forms to keep their records up to date between appraisals, to remove taxes on destroyed structures and to avoid penalties.