Clinton County Property Tax Appeal — Ohio

Rob Hartley·Updated April 3, 2026

Clinton County is located in southern Ohio with Wilmington serving as the county seat. Major population centers include Wilmington, Sabina, Blanchester, and Port William. With a population of approximately 42,040, Clinton County ranks 38th out of 88 Ohio counties for median home value. The county's effective property tax rate of 1.56% is notably higher than the national median of 1.02%, though the median annual tax bill of $1,728 is $672 lower than the national median of $2,400 due to the county's lower home values.

Notable cities: Wilmington, Sabina, Blanchester, Port William, New Vienna, Martinsville

Median Home

$106,220

Tax Rate

1.56%

Annual Tax

$1,728

Population

42,040

2026 Appeal Deadline: March 31, 2026

To appeal your 2025 property valuation, you must file a complaint with the Clinton County Board of Revision between January 1 and March 31, 2026. The deadline is March 31 of the year following the tax year being appealed. Late filings are not accepted, and complaints are generally only accepted in this 1-3 month window each year.

Property in Clinton County, Ohio — local tax assessment and appeal guide

How Clinton County Assesses Property

35%of market value

Assessed by: Clinton County Auditor's Office

Assessment cycle: sexennial

Notices typically mailed: Spring (mid-April)

In Clinton County, property taxes are calculated based on assessed value, which is 35% of the property's market value as determined by the County Auditor. For example, if your home's market value is $106,220 (the county median), at Ohio's 35% assessment ratio your assessed value would be $37,177, resulting in approximately $1,728 in annual taxes at the county's effective rate of 1.56%. Ohio law requires the county auditor to re-appraise the value of every property every six years and to complete a triennial update in the third year of the reappraisal cycle. Clinton County completed its most recent revaluation in 2023.

The Appeal Process

Appeals are heard by the Board of Revision. The Clinton County Board of Revision is a quasi-judicial body consisting of three members: the County Auditor, County Treasurer, and a County Commissioner (or their designees). Hearings typically last approximately 15 minutes, and the Board reviews evidence to determine the fair market value of your property as of January 1 of the tax year in question. The burden of proof falls on the complainant to justify a change in value.

Review your property's assessed value using the Clinton County Auditor's online property search tool at https://clintonohhttps://.ddti.net/ to verify whether your valuation is accurate compared to similar properties in your area.

Gather supporting evidence such as recent comparable sales of similar homes in your neighborhood, a professional appraisal dated as of January 1 of the tax year, photographs documenting property condition issues, or repair estimates for deferred maintenance.

Complete DTE Form 1 (Complaint Against the Valuation of Real Property) available from the Clinton County Auditor's Office website or by calling(937) 382-2250. The form must be filled out completely and signed by the complainant in the presence of a notary public.

File your complaint with the Clinton County Board of Revision between January 1 and March 31, 2026 by mailing it to Clinton County Auditor, Attn: Board of Revision, 1850 Davids Drive Ste #303, Wilmington, OH 45177, or submitting it in person during office hours. The complaint must be received or postmarked by March 31, 2026.

Attend the Board of Revision hearing when scheduled. You will receive written notice of the hearing date and time by mail or email. Present your evidence to the three-member board consisting of the County Auditor, County Treasurer, and a County Commissioner representative.

If you disagree with the Board of Revision's decision, you may appeal within 30 days to either the Ohio Board of Tax Appeals (https://bta.ohio.gov or(614) 466-6700) or the Clinton County Court of Common Pleas by filing DTE Form 4 - Notice of Appeal.

Required form: DTE Form 1 - Complaint Against the Valuation of Real Property (or DTE Form 1M for manufactured homes)

Filing Methods

mail:Clinton County Auditor, Attn: Board of Revision, 1850 Davids Drive Ste #303, Wilmington, OH 45177

in-person:Clinton County Auditor's Office, 1850 Davids Drive Suite 303, Wilmington, OH 45177 (Monday-Friday, 8:00 AM - 4:00 PM)

Evidence to Bring

Recent comparable sales of similar properties in your areaProfessional appraisal report dated as of January 1 of the tax yearPhotographs documenting property damage or condition issuesRepair estimates or contractor quotes for deferred maintenanceDocumentation of factors negatively affecting property value

Clinton County Assessor Contact

Clinton County Auditor's Office

Phone: ((937) 382-2250

Address: 1850 Davids Drive, Suite 303, Wilmington, OH 45177

Website: https://clintoncountyauditor.org/

Online Portal: https://clintonohhttps://.ddti.net/

Hours: Monday-Friday, 8:00 AM - 4:00 PM

Tax Exemptions in Clinton County

Homestead Exemption

$28,000 of market value exempted (for tax year 2025)

Reduces property taxes by exempting a portion of the home's market value from taxation for qualifying senior citizens and permanently disabled homeowners

Eligibility: Must be 65+ years old or permanently disabled, own and occupy home as principal residence as of January 1, and have modified adjusted gross income not exceeding $40,000 for tax year 2025 (Social Security income excluded)Deadline: December 31 of the application year

Disabled Veterans Enhanced Homestead Exemption

$56,000 of market value exempted (for tax year 2025)

Provides an increased homestead exemption for veterans with 100% service-connected disability

Eligibility: Must be a veteran with 100% service-connected disability rating, own and occupy home as principal residence; no income limit appliesDeadline: December 31 of the application year

Owner-Occupancy Credit

2.5% reduction of tax bill

Automatic 2.5% reduction on property tax bills for owner-occupied primary residences

Eligibility: Primary residence owners receive this credit automaticallyDeadline: No application required (automatic)

Official Resources

Clinton County Auditor Official Website →

Access property records, tax information, homestead exemption applications, and Board of Revision forms and procedures.

Clinton County Property Search Tool →

Search and view property values, assessment information, tax history, and parcel details for any property in Clinton County.

Ohio Department of Taxation - Property Tax Division →

Find state property tax forms, regulations, homestead exemption information, and guidance on the Ohio property tax system.

Ohio Board of Tax Appeals →

File appeals of Board of Revision decisions, access the online appeal guide, and review the state-level property tax appeal process.

Check Your Clinton County Assessment

Enter your address to see if your Clinton County property is overassessed.

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Frequently Asked Questions

What is the deadline to appeal my property taxes in Clinton County for 2026?

The deadline to file a property tax appeal in Clinton County is March 31, 2026 for appealing your 2025 tax year valuation. Your complaint must be filed with the Clinton County Board of Revision between January 1 and March 31, 2026. The form must be received by the County Auditor's office or postmarked by March 31, 2026. Late filings are not accepted under Ohio law, so it's critical to submit your DTE Form 1 before this deadline passes. Property tax appeals are generally only accepted during this specific 1-3 month window each year, making timely filing essential to preserve your appeal rights.

How do I file a property tax appeal in Clinton County?

To file a property tax appeal in Clinton County, you must complete DTE Form 1 (Complaint Against the Valuation of Real Property), which is available from the Clinton County Auditor's Office website or by calling(937) 382-2250. The form must be filled out completely and signed in the presence of a notary public. You'll need to include your property information, your opinion of the correct market value, and the reasons you believe the valuation is incorrect. Submit the completed form either by mail to Clinton County Auditor, Attn: Board of Revision, 1850 Davids Drive Ste #303, Wilmington, OH 45177, or in person at the Auditor's office during business hours (Monday-Friday, 8:00 AM - 4:00 PM). Be sure to include supporting evidence such as comparable sales, appraisals, or photos documenting property condition issues.

What is the homestead exemption worth in Clinton County?

The homestead exemption in Clinton County exempts $28,000 of your home's market value from taxation for tax year 2025, with the amount adjusted annually for inflation. For example, if your home has a market value of $106,220 (the county median), you would be taxed as if it were worth $78,220, saving you approximately $428 per year at the county's 1.56% effective tax rate. To qualify, you must be at least 65 years old or permanently disabled, own and occupy your home as your principal residence as of January 1, and have a modified adjusted gross income not exceeding $40,000 (Social Security income is excluded from this calculation). Veterans with a 100% service-connected disability qualify for an enhanced exemption of $56,000 with no income limit, potentially saving approximately $854 annually.

What happens at a Board of Revision hearing in Clinton County?

At a Clinton County Board of Revision hearing, you will present your case before a three-member quasi-judicial board consisting of representatives from the County Auditor's office, County Treasurer's office, and the Board of County Commissioners. Hearings typically last approximately 15 minutes and focus on determining the fair market value of your property as of January 1 of the tax year in question. You should bring all supporting evidence including comparable sales data, appraisal reports, photographs, and repair estimates to justify your requested valuation. The burden of proof falls on you as the complainant to demonstrate why the county's valuation is incorrect. The Board has the authority to increase, decrease, or make no change to your property's valuation based on the evidence presented, and their decision will be mailed to you within weeks after the hearing concludes.

How much can I save by appealing my property taxes in Clinton County?

The amount you can save by appealing your property taxes in Clinton County depends on the difference between your current assessed value and what the Board of Revision determines is the correct market value. For a home valued at the county median of $106,220, every $10,000 reduction in market value would save approximately $156 per year at Clinton County's 1.56% effective tax rate (factoring in the 35% assessment ratio). If you successfully demonstrate your home is overvalued by $20,000, you could save approximately $312 annually. However, national statistics show that about 25% of homes in America are unfairly overassessed and pay an average of $1,346 too much in property taxes every year. The key to maximizing your savings is providing strong evidence such as recent comparable sales, professional appraisals, or documentation of property defects that negatively impact value.

What evidence do I need for a Clinton County property tax appeal?

For a successful Clinton County property tax appeal, you should provide compelling evidence to support your opinion of your property's market value as of January 1 of the tax year in question. The most effective evidence includes: recent sales of comparable homes in your neighborhood (similar in size, age, condition, and location), a professional appraisal prepared by a qualified appraiser dated as of the January 1 lien date, photographs documenting property damage or condition issues, repair estimates or contractor quotes for deferred maintenance, and documentation of any factors that negatively impact your property's value such as environmental issues or nearby nuisances. Simply stating that you believe your value is wrong without supporting documentation will not justify a change. The Board of Revision weighs all properly submitted evidence when determining fair market value, and you should submit your evidence when filing your DTE Form 1 or at least 5 days before your scheduled hearing.

When are property values reassessed in Clinton County?

Under Ohio law, Clinton County is required to conduct a full reappraisal of all properties every six years (sexennial cycle) and complete a triennial update in the third year of that cycle. Clinton County completed its most recent full revaluation in 2023, meaning the next triennial update will occur in 2026 and the next full reappraisal will be in 2029. Assessment notices are typically mailed to property owners in the spring of each year, generally reaching mailboxes by mid-April. Each notice contains both the market value and assessed value (which is 35% of market value in Ohio), along with an estimate of your property tax bill. Property owners who disagree with their assessed value have until March 31 of the following year to file an appeal with the Clinton County Board of Revision challenging that valuation.

Can I appeal to a higher authority if my Board of Revision appeal is denied in Clinton County?

Yes, if you disagree with the Clinton County Board of Revision's decision, you have 30 days from the date the decision letter is mailed to file an appeal to a higher authority. You have two options: you can appeal to the Ohio Board of Tax Appeals by filing DTE Form 4 (Notice of Appeal) electronically at https://bta.ohio.gov or by calling(614) 466-6700, or you can appeal to the Clinton County Court of Common Pleas. You must file a copy of your notice of appeal with both the higher authority and the Clinton County Board of Revision within the 30-day timeframe, or your appeal will be dismissed. The Ohio Board of Tax Appeals is an administrative appellate body that reviews property valuation disputes statewide, while the Court of Common Pleas provides a judicial review option. Most property owners choose the Board of Tax Appeals route as it is less formal and typically less expensive than court proceedings.

For state-wide appeal information including Ohio's assessment ratio and deadlines, see our Ohio Property Tax Appeal Guide →

Considering professional help with your appeal? Compare pricing, coverage, and pros/cons in our Best Property Tax Appeal Services (2026) or browse side-by-side service comparisons →

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← All Ohio property tax appeal info

Sources: https://clintoncountyauditor.org/ | https://clintoncountyauditor.org/board-of-revision | https://clintoncountyauditor.org/homestead-exemption | https://www.ownwell.com/trends/ohio/clinton-county | https://co.clinton.oh.us/news/post/9992/ | https://sdglegal.net/ohio-property-tax-deadline-2025/

Last verified: 2026-04-03