Union County, Ohio


NOTICE:  The Auditor’s Office will be Closed from 8:30am – 10:00am on the third Tuesday of each month for a department meeting.

ATTENTION: Title Companies, Title Examiners, Attorneys and Closing Agents. The Union County Auditor’s Office will be implementing new procedures for splits, condominiums, subdivisions, combinations, and plats created in 2021 and in future years. CLICK HERE for further details.

COVID-19:  While our office is currently Open to the public, because of COVID-19, we are mindful of public health concerns and urge the public to call or email our office. Additionally, an Auditor’s Office document drop-off/pickup-up area has been setup in the building. Please call (937-645-3003) during our normal business hours (M-F 8:30am-4:00pm) or email (auditor@co.union.oh.us) our office if you have any questions, concerns, or need to conduct other business with our office. There will be a staff member available to assist you.

 Andrea L. Weaver, Union County Auditor

Andrea Weaver-headshot (2018).jpg  

Dear Union County Taxpayer,  

As County Auditor, I am responsible for a variety of duties that impact nearly every resident of the County. One of my major areas of responsibility is that of Chief Fiscal Officer – the Auditor is responsible for the financial accounts of every County Board, department, office, agency or district.  Simply put, it is my job to see that the funds of Union County are spent in a legal manner and that the tax revenues are distributed properly.  Ohio law places more fiscal responsibility upon the County Auditor than upon any other County Official.  And many of the functions performed in my office are complex, requiring the skills of trained public servants with many years of experience. I am very proud of my Team, and the people of Union County are well served by their outstanding efforts.  

The other major area of responsibility for the County Auditor is that of Chief Assessor – I am responsible for determining the value of all real property in Union County for tax purposes.  Every six years the Auditor must conduct a full reappraisal of real property, and every three years, an update of real property values is required.  Tax credits are also maintained in my office, including 2 ½% rollback, 10% rollback and the Homestead Exemption.  We also are responsible for the valuation of farm land and the administration of the Current Agricultural Use Value program (CAUV).  In all duties, the Auditor acts under the direct auspices of the Tax Commissioner of Ohio as his agent. The Auditor must comply with all rules and regulations issued by the Tax Commissioner as well the multitude of Ohio laws governing assessments.

Additional Duties

Budget Commission - Secretary  : The Auditor is the permanent Secretary of the Budget Commission which also includes the County Treasurer and the Prosecutor. It is the responsibility of the Commission to annually review the tax budgets of all taxing districts within the county and to determine whether tax levies are properly authorized and allocated to local governments and libraries.

Board of Revision - Secretary  : The Auditor is the permanent Secretary of the Board of Revision which also includes the County Treasurer and the President of the Board of Commissioners. It is the responsibility of the Board of Revision to rule on the accuracy of property assessments prior to the issuance of the real estate tax list. The Board of Revision is the primary place venue for property valuation complaints to be heard.

Tax Incentive Review Council - Member  :  The Auditor is a statutory member of the Tax Incentive Review council appointed by the legislative authority of a county, township, or municipal corporation whose purpose is to grant or deny an exemption from taxation for abatements, enterprise zones or tax increment financing.  Annually, the Tax Incentive Review Council reviews all agreements of existing exemptions for these areas.

Records Commission - Member 

Data Processing Board - Secretary, Administrator  : In Union County, our Data Board is an active, well-attended board that monitors and participates in all County technology decisions.