Union County Property Appraiser & Tax Assessor
Real property appraisal records, parcel search lookup, property tax rates, and assessment protest deadlines for Union County, Ohio.
Union County County Auditor - Real Estate Division Information
Union County Appraisal & Assessment Office, Marysville, OH 39001
Get Driving Directions ↗Monday - Friday: 8:00 AM - 4:30 PM (Local Time)
Closed on state & federal holidays.
(614) 203-4529
County Auditor Real Estate Search
Union County Property Tax Calculator
Estimated using Union County's effective tax rate of 1.53% (Assessment ratio: 35%)
Appealing Your Union County Assessment
March 31 following the tax year being appealed.
Under Ohio property tax law, property owners in Union County have the legal right to challenge an assessed valuation that exceeds fair market value, is unequally appraised compared to neighboring properties, or contains clerical errors.
Contact the Union County County Auditor - Real Estate Division to review your property record card, verify square footage, and present recent comparable sales (comps).
If informal review does not resolve the valuation, file a written notice of appeal with the County Board of Revision (BOR) before the statutory deadline.
Was Your Union County Home Over-Assessed This Year?
Studies show up to 30% to 60% of US residential properties are overvalued by automated municipal algorithms. Protesting your assessment before the statutory deadline can lower your tax bill by an average of $1,100/year.
Union County Homestead Exemptions & Tax Relief
Homeowners in Union County who occupy their home as their permanent primary residence may qualify for property tax reductions under state and local homestead programs:
Homestead Exemption shields the first $26,200 of market value from taxation for eligible seniors 65+ with income under statutory limits.
Qualifying 100% disabled veterans receive an enhanced $52,300 market value reduction on their homestead.
Need Deed, Lien, or Title Records for Union County?
While the Property Appraiser values real estate for taxation, official legal property transfers, warranty deeds, mortgages, and marriage records in Union County are maintained by the County Clerk & Recorder.
Frequently Asked Questions
Where is the Union County Property Appraiser office located?
The official Union County property appraisal and tax assessment office is located at Union County Appraisal & Assessment Office, Marysville, OH 39001. Operating hours are typically Monday - Friday: 8:00 AM - 4:30 PM (Local Time). You can reach the customer service staff by phone at (614) 203-4529.
What is the property tax rate in Union County, OH?
The average effective property tax rate in Union County is approximately 1.53%. For a home with the median county market value of $195.000, the estimated annual property tax is about $2984 per year.
How do I search for a property or parcel in Union County?
You can look up property record cards, assessed valuations, ownership history, and parcel boundary maps online through the official Union County parcel search portal: https://unioncountyohio.gov/assessor/parcel-search.
When is the deadline to appeal my property assessment in Union County?
Property valuation protests and appeals in Union County must be submitted by: March 31 following the tax year being appealed. Appeals are formally reviewed and heard by the County Board of Revision (BOR).
How does the Homestead Exemption work in Union County?
Homestead Exemption shields the first $26,200 of market value from taxation for eligible seniors 65+ with income under statutory limits. Additional exemptions are available for senior citizens (65+) and disabled military veterans (Qualifying 100% disabled veterans receive an enhanced $52,300 market value reduction on their homestead.).