Williams County Property Tax Appeal, Ohio

Travis Bunn·Updated July 25, 2026

Williams County is located in northwestern Ohio with Bryan as the county seat and largest city. The county has a population of approximately 36,500 residents and includes notable communities such as Montpelier, Edgerton, and West Unity. With a median home value of approximately $101,900 and an effective property tax rate of 1.25%, Williams County property taxes are below both Ohio's median ($2,647 annually) and the national median ($2,400). Property tax appeals are particularly important here for homeowners who may be overassessed, as statistics show about 25% of homes nationwide are unfairly overassessed and pay an average of $1,346 too much annually.

Notable cities: Bryan, Montpelier, Edgerton, West Unity

Median Home

$101,900

Tax Rate

1.25%

Annual Tax

$1,269

Population

36,500

On the typical Williams County home, valued near $101,900 at the county’s effective tax rate of 1.25%, an over-assessment of even 10% means you are overpaying year after year until you appeal it. Here is how to find out if yours qualifies.

2026 Appeal Deadline: March 31, 2026

This year's appeal window has passed in most of Ohio. Order now and we re-run your numbers free when the window reopens, so your evidence is ready the day your next notice lands.

In Williams County, property tax appeals must be filed with the Board of Revision between January 1 and March 31 annually, as specified in Ohio Revised Code Section 5715.19. For tax year 2025 values (payable in 2026), the deadline is March 31, 2026. Complaints must be received or postmarked by this date - late filings are not accepted and there are no extensions.

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Ohio residential street of family homes. Williams County appeal guide.

How Williams County Assesses Property

35%of market value

Assessed by: Williams County Auditor's Office

Assessment cycle: Sexennial reappraisal every 6 years with triennial updates at the 3-year midpoint

Notices typically mailed: Spring (typically April-May following the valuation year)

Ohio assesses all residential property at 35% of fair market value as mandated by the Ohio Constitution. The Williams County Auditor conducts a full reappraisal every six years (sexennial), with the most recent completed in 2024, and updates values every three years (triennial) based on market trends. For example, if your home's market value is $101,900 (the county median), at Ohio's 35% assessment ratio your assessed value would be $35,665, resulting in approximately $1,269 in annual taxes at the county's effective rate of 1.25%.

The Appeal Process

Appeals are heard by the Board of Revision. The Williams County Board of Revision hearing is an informal proceeding where you present evidence supporting your requested property value. You will typically have 5-15 minutes to present your case to the three-member board, which consists of the County Auditor, County Treasurer, and a County Commissioner. The county's appraiser may also present evidence supporting the current valuation. Be prepared to answer questions about your property and the evidence you've submitted.

Step 1: Consider an informal review with the County Auditor's Office. Before filing a formal appeal, contact the Williams County Auditor at 419-636-5639 to discuss your property valuation. Many issues can be resolved through an informal review if there are obvious errors in property characteristics or recent sale information.

Step 2: Gather evidence to support your appeal. Collect recent comparable home sales in your neighborhood (within the past 6-12 months), photos documenting property condition or defects, recent appraisals, repair estimates for needed work, and your property's sale price if purchased recently. The burden of proof is on the property owner.

Step 3: Complete DTE Form 1 (Complaint Against the Valuation of Real Property). Download the form from the Ohio Department of Taxation website or obtain it from the Williams County Auditor's Office. The form must be signed, notarized, and include specific information about your property and the value you believe is correct.

Step 4: File your complaint with the Williams County Board of Revision between January 1 and March 31. Submit by mail to One Courthouse Square, Bryan, OH 43506, or file in person at the Auditor's Office during business hours (Monday-Friday, 8:30 a.m. - 4:30 p.m.). Keep copies of all documents submitted.

Step 5: Attend your Board of Revision hearing. The Board will schedule a hearing, typically within 2-4 months of filing. The Williams County Board of Revision consists of the County Auditor, County Treasurer, and President of the Board of County Commissioners. Present your evidence clearly and concisely in 5-15 minutes, focusing on comparable sales and property-specific factors.

Step 6: Receive the Board's decision. The Board will issue a written decision, typically within several weeks after the hearing. If you disagree with the Board of Revision decision, you have 30 days to appeal to the Ohio Board of Tax Appeals using DTE Form 4.

Step 7: Further appeals if necessary. If the Board of Tax Appeals decision is unfavorable, you may appeal to the Court of Common Pleas or Ohio Supreme Court within statutory timeframes. These higher-level appeals may require legal representation.

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

Filing Methods

mail:Williams County Board of Revision, One Courthouse Square, Bryan, OH 43506

in-person:Williams County Auditor's Office, One Courthouse Square, Bryan, OH 43506. Office hours: Monday-Friday, 8:30 a.m. - 4:30 p.m.

Evidence to Bring

Recent comparable sales (3-5 properties similar in size, age, and condition that sold within the past 6-12 months)Recent professional appraisal (if available)Photographs documenting property condition, defects, or needed repairsRepair estimates or contractor quotes for significant issuesPurchase documents if you recently bought the property for less than the assessed valueProperty listing information showing market conditions

Williams County Assessor Contact

Williams County Auditor's Office

Website: https://realestate.williamscountyoh.gov/

Hours: Monday-Friday, 8:30 a.m. - 4:30 p.m.

Tax Exemptions in Williams County

Homestead Exemption (Senior/Disabled)

$29,000 reduction in market value

Reduces the taxable value of a primary residence by exempting the first $29,000 of the home's market value from taxation, resulting in lower annual property tax bills for qualifying homeowners.

Eligibility: Available to homeowners who are 65 years or older, or totally and permanently disabled, and own and occupy the home as their principal residence. For tax year 2025 (payable 2026), Ohio Adjusted Gross Income cannot exceed $40,000. The limit increases to $41,000 for tax year 2026. Homeowners who received the exemption prior to 2014 are not subject to the income test.Deadline: First Monday in June (typically early June annually). Applications are available beginning in January each year. Apply at the Williams County Auditor's Office using DTE Form 105A.

Owner Occupancy Credit

Varies by taxing district - typically 2.5% reduction

A reduction available to homeowners who own and occupy their home as their principal place of residence, providing a modest tax benefit on the property tax bill.

Eligibility: You must own the home as of January 1 of the year you are applying and it must be your principal place of residence. This is separate from the Homestead Exemption.Deadline: Apply with the Williams County Auditor's Office. Contact 419-636-5639 for current application deadlines.

Disabled Veteran Homestead Exemption

$50,000 reduction in market value

Provides property tax exemption for veterans with 100% service-connected disability ratings, with no income requirements or age restrictions.

Eligibility: Veterans declared 100% disabled due to service-connected disability. Unlike the senior/disabled homestead exemption, there is no income test for this exemption. Must own and occupy the home as principal residence.Deadline: First Monday in June annually. Use DTE Form 105I (Disabled Veteran Homestead Application). Apply at Williams County Auditor's Office.

Current Agricultural Use Value (CAUV)

Variable based on agricultural use - can result in substantial savings compared to market value assessment

Allows qualifying agricultural land to be valued based on its current agricultural use rather than its potential market value for development, significantly reducing property taxes for active farmers.

Eligibility: Land must be devoted exclusively to commercial agricultural use for at least three years preceding the application. Minimum acreage requirements and gross income thresholds apply. Contact the Williams County Auditor for specific requirements.Deadline: Applications and renewals typically due in the first quarter of the year. Contact Williams County Auditor at 419-636-5639 for specific deadlines and requirements.

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Frequently Asked Questions

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

The deadline to file a property tax appeal in Williams County is March 31, 2026, for tax year 2025 values. Appeals must be filed with the Williams County Board of Revision between January 1 and March 31 annually, as specified in Ohio Revised Code Section 5715.19. This deadline is strict and there are no extensions - complaints must be received or postmarked by March 31, 2026. If you miss this deadline, you must wait until the next filing period to appeal your assessment, meaning you'll pay the higher taxes for an additional year.

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

To file a property tax appeal in Williams County, you must complete DTE Form 1 (Complaint Against the Valuation of Real Property) and submit it to the Williams County Board of Revision at One Courthouse Square, Bryan, OH 43506. The form must be signed and notarized. You can file by mail (must be postmarked by March 31) or in person at the Auditor's Office during business hours (Monday-Friday, 8:30 a.m. - 4:30 p.m.). Include all supporting evidence with your complaint, such as comparable sales, photos, and appraisals. The Board will schedule a hearing where you can present your case, typically within 2-4 months of filing.

What is the homestead exemption worth in Williams County?

The homestead exemption in Williams County reduces your home's taxable value by $29,000 for tax year 2025. At Williams County's effective tax rate of 1.25%, this exemption saves qualifying homeowners approximately $363 per year in property taxes ($29,000 × 35% assessment ratio × 1.25% = $126.88 on assessed value, which translates to roughly $363 in actual tax savings when factoring in all applicable rates). To qualify, you must be 65 years or older or totally and permanently disabled, own and occupy your home as your principal residence, and have an Ohio Adjusted Gross Income of $40,000 or less for 2025. Disabled veterans with 100% service-connected disability can receive a $50,000 exemption with no income restrictions.

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

At a Williams County Board of Revision hearing, you will present evidence to a three-member panel consisting of the County Auditor, County Treasurer, and President of the Board of County Commissioners. You typically have 5-15 minutes to present your case explaining why your property is overvalued and what you believe the correct value should be. You should present comparable sales data, photographs, appraisals, or other evidence supporting your requested value. The county's appraiser may also present evidence defending the current valuation. The Board will ask questions and may schedule a property inspection if needed. After reviewing all evidence, the Board will issue a written decision within several weeks, either maintaining the current value, reducing it to your requested amount, or setting it at a different value based on the evidence presented.

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

The savings from a successful property tax appeal in Williams County depend on how much your assessed value is reduced. At the county's 1.25% effective tax rate and Ohio's 35% assessment ratio, every $10,000 reduction in market value saves approximately $44 annually in property taxes. For example, if you successfully appeal and reduce your home's value from $120,000 to $100,000 (a $20,000 reduction), you would save approximately $88 per year. Statistics show that about 25% of homes nationwide are overassessed by an average of $1,346 annually. Over a three-year appeal cycle period, even a modest reduction can result in several hundred dollars in savings, making the appeal process worthwhile for homeowners with strong evidence of overassessment.

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

The most effective evidence for a Williams County property tax appeal includes 3-5 recent comparable sales of similar homes in your neighborhood that sold for less than your assessed value within the past 6-12 months. Recent comparable sales carry the most weight with the Board of Revision. Additional strong evidence includes a recent professional appraisal (conducted within the past year), photographs documenting property defects or poor condition, repair estimates from licensed contractors for significant issues, and your purchase documents if you bought the property recently for less than the assessed value. If your home has unique negative factors (flood damage, foundation issues, environmental problems, or functional obsolescence), provide documentation of these conditions. The Ohio Board of Revision requires property owners to prove their case, so comprehensive, well-organized evidence is essential for success.

Can Williams County increase my property taxes if I file an appeal?

While the Williams County Board of Revision cannot increase your property value based on your own complaint, Ohio law allows school districts to file counter-complaints within 30 days of your filing arguing that your property value should actually be higher. This counter-complaint mechanism means there is some risk when filing a property tax appeal in Ohio, particularly for properties with significant value changes. However, school district counter-complaints are more common in larger metropolitan counties and typically focus on complaints involving substantial value changes ($50,000 or more). In Williams County, counter-complaints are less frequent than in urban counties like Cuyahoga or Franklin. If you have solid evidence supporting your requested value and your property hasn't experienced major improvements that would justify a higher assessment, the risk of a counter-complaint is relatively low.

What is the 35% assessment ratio in Williams County and how does it affect my taxes?

The 35% assessment ratio in Williams County is mandated by the Ohio Constitution and means your property is taxed on 35% of its fair market value rather than the full value. This is Ohio's statutory assessment ratio for all residential property. For example, if your home's market value is $101,900 (the Williams County median), your assessed value for tax purposes is $35,665 (35% of $101,900). The county's tax rates are then applied to this assessed value. When you file a property tax appeal, you're challenging the market value determination made by the County Auditor, not the 35% assessment ratio which is fixed by state law. Understanding this distinction is important because the Board of Revision evaluates whether the Auditor correctly determined your property's fair market value, from which the 35% assessed value is automatically calculated.

Official Resources

Williams County Auditor Property Search →

Official Williams County Auditor website to search property records, view assessments, and access property tax information.

Ohio Department of Taxation - Property Tax Forms →

Download DTE Form 1, DTE Form 1M, and other official Ohio property tax appeal forms and instructions from the state tax authority.

Williams County Board of Revision Information →

Official information about the Williams County Board of Revision, including rules of procedure and contact details for filing appeals.

Ohio Homestead Exemption Information →

Williams County Homestead Exemption application forms and eligibility requirements for senior citizens, disabled homeowners, and veterans.

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://www.williamscountyoh.gov/268/Real-Estate-Tax | https://realestate.williamscountyoh.gov/ | https://www.tax-rates.org/ohio/williams_county_property_tax | https://www.williamscountyoh.gov/434/Board-of-Revision | https://www.williamscountyoh.gov/235/Real-Property-Valuation | https://www.appealdesk.com/blog/how-to-appeal-property-taxes-in-ohio | https://ballotpedia.org/Williams_County,_Ohio

Last verified: 2026-07-25