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Auditor
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General Information
Staff Directory
Email
auditor@unioncountyohio.gov
Phone Numbers
937-645-3003
Fax: 937-645-3057
Emergencies: Dial 911
Location
233 West 6th Street
2nd Floor
Marysville,
OH
43040
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Hours
Office Hours
8:30 a.m. - 4 p.m.
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Real Estate Assessments

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Real Estate Assessments

Union County maintains approximately 32,800 property records. It is the duty of the Auditor's Office to see that every parcel of land and the buildings thereon are fairly and uniformly appraised and then assessed for tax purposes. A general reappraisal is mandated by Ohio Law every six years and a value update every three years. The last reappraisal in Union County occurred in 2019. The office maintains a detailed record of the appraisal on each parcel in the County. These records are open for public inspection.

Please use our   Property Information   tools to view detailed information about a property.

Various real estate related forms and applications are available on the   Forms   web page.