Ohio complaint against valuation form: how to fill it out correctly

Last updated 2026-07-10

What is Ohio Form DTE 1 and what does it actually do?

Form DTE 1 is the official Ohio tax form called the Complaint Against the Valuation of Real Property. It opens a formal appeal of your county auditor's assessed value before the county Board of Revision (BOR). File it on time and correctly, or you have no appeal. It is that simple.

Every county in Ohio uses the same state-issued form, published by the Ohio Department of Taxation ^[1]. The form does not lower your taxes by itself. It schedules a hearing where you present evidence and argue that the auditor's value is wrong. If the Board agrees, it issues a decision that reduces the taxable value, and your tax bill drops with it.

Ohio taxes residential property at 35% of its appraised (true market) value, so a $300,000 true-value reduction cuts your taxable value by $105,000 ^[2]. At a typical effective tax rate of roughly 1.5% to 2% depending on the county and local levies, that reduction saves you about $1,575 to $2,100 a year. The math is worth taking seriously.

The Board of Revision is a three-member panel: the county auditor, the county treasurer, and a county commissioner (or their designees). They hear evidence, ask questions, and issue a written decision. You are not going to court. The atmosphere is closer to a meeting than a trial, which is good news for anyone who wants to handle this alone.

What is the filing deadline for the Ohio valuation complaint?

Ohio Revised Code Section 5715.19 sets the filing window at January 1 through March 31 of the year following the tax year you are challenging ^[3]. For the 2024 tax year, you file by March 31, 2025.

Miss March 31 and you are locked out for that cycle. No grace period. No late-filing exception for personal hardship. No way to reopen a complaint after the deadline. The Board of Revision has no authority to accept a late filing.

One exception matters: if the county auditor issues a revised notice of assessment after January 1, you have 30 days from the mailing date of that notice to file, even if March 31 has passed ^[3]. Keep the envelope. The postmark on the auditor's notice starts the clock.

Some counties accept filings by mail, fax, or in person. A few accept electronic submissions. Call your county auditor's office to confirm the accepted method before you assume email works. If you mail the form, send it certified and keep the receipt. The postmark must be on or before March 31.

Here is how Ohio's filing window compares to neighboring states:

State	Appeal body	Filing window
Ohio	Board of Revision	Jan 1 - Mar 31
Indiana	Property Tax Assessment Board of Appeals	May 15 (45 days from notice)
Kentucky	Local Board of Assessment Appeals	May 1 - May 31
Michigan	Michigan Tax Tribunal or Local Board	July 31 (residential)
Pennsylvania	County Board of Assessment Appeals	Varies by county, often Aug 1

Ohio's March 31 deadline lands earlier than most neighboring states. That catches people off guard every year.

Where do you get the DTE 1 form and where do you file it?

The Ohio Department of Taxation publishes Form DTE 1 on its website ^[1]. You can also pick up a paper copy at your county auditor's office or the county Board of Revision clerk's office, which is often the same counter.

You file the completed form with the county Board of Revision, not the Ohio Department of Taxation. Each of Ohio's 88 counties runs its own Board of Revision out of the county auditor's building. A complaint on a Franklin County property goes to the Franklin County Board of Revision. A complaint on a Summit County property goes to Summit County. File in the wrong county and it does not get forwarded. It gets rejected.

Find your county auditor's contact information through the County Auditors' Association of Ohio ^[4]. Most county websites list the Board of Revision address, phone number, and any local filing instructions on a dedicated page.

How do you fill out Form DTE 1 line by line?

The form has two pages. Read both before you write anything.

Section 1: Property identification Write the parcel number exactly as it appears on your property tax bill or the county auditor's website. One wrong digit and the clerk may reject the filing or attach your complaint to the wrong parcel. Put the full street address on the next line.

Section 2: Who is filing Check the box that describes you. Most homeowners check "Owner." If you are filing as a contract purchaser or a tenant who pays taxes, check the appropriate box. ORC 5715.19 limits who can file ^[3], so confirm your relationship to the property qualifies.

Section 3: Tax year at issue Write the tax year you are contesting, not the current calendar year. If your 2024 tax bill is too high because the auditor overvalued your property as of January 1, 2024, the tax year at issue is 2024.

Section 4: The current audited value and your claimed value This is the heart of the form. It asks for the auditor's appraised value (true value) and assessed value (35% of true value). Both appear on your tax bill or the county auditor's property search page.

Then you write the value you believe is correct. Do not guess. Your claimed value has to be backed by whatever evidence you attach. If three comparable sales average $220,000 and the auditor has your property at $290,000, your claimed value should be near $220,000, not $250,000 as a negotiating gesture. The Board takes the evidence at face value.

Section 5: Grounds for complaint Check the boxes that apply. The most common grounds are:

• The property is valued at more than its true (market) value
• The property is not uniformly assessed compared to similar properties
• An error in the property record (wrong square footage, wrong bedroom count, a nonexistent improvement)

If you paid less for the property than the auditor's value, check the true-value box. If the county assesses you at a higher percentage of market value than your neighbors, check the uniformity box.

Section 6: Supporting evidence The form has a section to list your evidence. Write a short description of each attachment: "Three comparable sales from MLS, addresses listed on attached sheet" or "Independent appraisal dated February 10, 2025 by [appraiser name and license number]" or "County auditor property record showing incorrect square footage."

Some counties want all evidence at filing. Others let you submit up to a few days before the hearing. Attach everything you have when you file. You can supplement later if the county allows it, but do not count on a second chance.

Section 7: Signature and date Sign and date the form. If you are filing as a legal entity (LLC, trust), the signatory must be authorized to act for the entity, and the form may need to identify that relationship. Individual homeowners just sign.

Do not leave any section blank. Blank sections make clerks nervous and can trigger a deficiency notice that eats into your time.

What evidence actually wins a valuation complaint in Ohio?

The Board of Revision wants one thing: proof of what your property would sell for on January 1 of the tax year at issue, in an arm's-length transaction between a willing buyer and a willing seller. That is Ohio's statutory definition of true value ^[8].

Three types of evidence move the needle.

1. Comparable sales (comps) Sales of similar properties within the six to twelve months around the lien date carry heavy weight. Pull three to five properties close in size, age, condition, and location. Closer is better. Print the MLS listing, the county auditor's record for each comp, and a map showing proximity. Circle the relevant fields. Make it easy for the Board to follow your logic.

If you bought the property in the year before the tax lien date, the purchase price is strong evidence of true value under Ohio case law. The Ohio Supreme Court has recognized an arm's-length sale price as compelling evidence ^[5].

2. A certified appraisal A licensed Ohio appraisal, prepared by a state-certified appraiser with an effective date close to the lien date, is the strongest single piece of evidence you can bring. It costs between $400 and $700 for a residential property in most Ohio markets, which is worth it if the potential savings clear that number. The appraisal should state the effective date, confirm it is written to the Ohio market value standard, and be signed under the Uniform Standards of Professional Appraisal Practice (USPAP).

3. Evidence of physical errors If the auditor's record shows 2,400 square feet and your property is 1,850, document the error with a floor plan, a prior appraisal, or your own measured sketch. Wrong bedroom counts, wrong lot size, or improvements that were never built (or were demolished) can be corrected and may justify a real value cut without any comps at all.

What does not work: Zillow estimates (the Board knows they are unreliable), your opinion of value with nothing behind it, general complaints that taxes are too high, and comparisons to what your neighbor pays without underlying value evidence.

If you want a structured process for building your evidence package, the DIY appeal kit at TaxFightBack walks you through selecting, formatting, and presenting comps the way county boards expect to see them.

Can a school district or county challenge your complaint?

Yes, and most guides skip this. Under ORC 5715.19(B), a school district, county, or municipality that could be affected by a reduction in assessed value has the right to file a counter-complaint and appear at your hearing ^[3]. It is called a "counter-complaint" or a "cross-complaint."

School districts have gotten aggressive about this in high-value Ohio counties because they run on property tax revenue. If you file saying your $400,000 home is worth $320,000, the district's legal counsel may show up, cross-examine you, and present evidence that the auditor's value is correct or even too low.

That is no reason to skip the appeal. Most residential complaints never draw a district response. But if your property is worth more than $500,000 or your claimed reduction tops $100,000, plan for a represented opponent. In that case, a certified appraisal beats comps by a wide margin.

The school district gets automatic notice once you file. It has 30 days from the date the auditor certifies the complaint to file a counter-complaint ^[3].

What happens at the Board of Revision hearing?

Most residential hearings run 15 to 30 minutes. You present your evidence, explain your analysis, and answer questions from the Board members or their counsel. There are no formal rules of evidence, but speak clearly and stick to facts.

Bring three copies of everything: one for the Board, one for the opposing party if there is one, and one for yourself. Put a cover sheet on your packet listing what is inside. Numbered tabs help.

Open with your claimed value and why. Something like: "I'm asking the Board to reduce the true value from $290,000 to $218,000, based on three arm's-length sales of comparable properties that closed within six months of the lien date." Then walk through each comp. Do not ramble. The Board has heard many complaints that day.

You will get a written decision by mail, usually within 30 to 90 days of the hearing. The decision states the new value, if any, and the reasoning. If you win, the auditor adjusts the tax bill and, if you already paid, issues a refund or credit.

If you lose, you can appeal the Board's decision to the Ohio Board of Tax Appeals (BTA) within 30 days of the decision's mailing date ^[6]. The BTA is a more formal administrative body and the next step before the courts.

What are the most common mistakes that get Ohio valuation complaints dismissed or denied?

Filing late is the fatal one. After March 31, the Board cannot help you, no matter how strong your evidence is.

Other mistakes that routinely sink complaints:

Wrong parcel number. Even one transposed digit can cause a rejection. Verify the parcel number on the county auditor's property search page, more than your tax bill, because bills occasionally have printing errors.

No stated claimed value. The form requires the value you believe is correct. Leaving it blank or writing "unknown" gives the Board nothing to decide and often ends in dismissal.

Wrong tax year. The tax year at issue is the year of the lien date (January 1), not the year the bill arrived or the year you are filing. Your 2024 bill (often paid in 2025) relates to the January 1, 2024 lien date.

Comparables from the wrong time period. Ohio case law generally wants comps from within 12 months of the lien date. Sales from 2022 do not support a 2024 lien-date value unless you explain an intervening market shift with data.

Filing in the wrong county. If the property sits in Cuyahoga County, file with the Cuyahoga County Board of Revision. Not the Ohio Department of Taxation. Not the Ohio Board of Tax Appeals.

Missing signature. The form must be signed by a person with standing to file. An unsigned form is not a valid complaint.

Does Ohio have any special rules for recent property sales?

Yes. Ohio Revised Code 5715.19(A)(2) states that if a property transferred in an arm's-length sale within a certain period, the sale price gets significant weight as evidence of true value ^[3]. Ohio courts read this broadly. A recent sale price is often the single most persuasive thing you can bring.

Buy the property for $215,000 twelve months before the lien date while the auditor shows it at $285,000, and you have a very strong case. Bring the HUD-1 or Closing Disclosure, the deed, and the county's own transfer record. The key is proving the sale was arm's-length: not a foreclosure, not a family transfer, not a distressed sale.

The reverse cuts against you. If you paid $350,000 for a property the auditor values at $290,000, the school district may use your sale price to raise the value. Ohio BOR panels can weigh all evidence in front of them, including evidence that pushes the value up. This is rare for modest residential appeals, but it is a legal reality.

The Ohio Department of Taxation's guidance on the sales-ratio study process explains how sale prices check assessment accuracy across whole jurisdictions ^[7]. The same logic applies at the individual complaint level.

How does Ohio's triennial update cycle affect when you can file?

Ohio runs a full sexennial (every six years) reappraisal and a triennial update at the three-year midpoint ^[9]. Between updates, you can still file a complaint every year, but your argument changes.

In a reappraisal year, the auditor sets new values for every property. Every owner can appeal those new values by March 31 of the following year. This is the highest-volume year for complaints.

In non-reappraisal, non-update years, you can still file, but ORC 5715.19(A)(3) sets a limit: if the same person filed on the same parcel for a prior tax year and the value did not change, they generally cannot file again for the next two tax years unless there is a new reason (a change in ownership, a new improvement or demolition, a Board of Revision error) ^[3]. The rule blocks serial annual filings without new grounds.

The triennial update usually sets values below a full reappraisal. But if the market dropped since the last update, the updated values may still sit above market. Check your county auditor's office for the update year schedule.

What does it cost to file a valuation complaint in Ohio, and do you need a lawyer?

Filing Form DTE 1 costs nothing. Ohio charges no filing fee for Board of Revision complaints ^[1].

You do not need a lawyer. Individuals can represent themselves before the Board of Revision, and most do. The main out-of-pocket cost, if you choose to spend it, is a professional appraisal, which typically runs $400 to $700 for a single-family home in Ohio. Whether it pays off depends on the size of your potential savings.

Here is a rough break-even check. If your property is overassessed by $50,000 in true value, the over-assessed portion of your taxable value is $17,500 (at Ohio's 35% ratio). At a 2% effective tax rate, you are overpaying about $350 a year. A $500 appraisal pays for itself in roughly 18 months, and the correction holds until the next reappraisal cycle.

Contingency-fee firms typically take 25% to 50% of the first year's tax savings. On $1,000 of annual savings, that is $250 to $500 out of your pocket. Over a three-year cycle before the next reappraisal, doing it yourself keeps $750 to $1,500 more in your hands. TaxFightBack's DIY appeal kit is built for people who want to keep 100% of those savings without an attorney or a contingency firm.

That said, if you own commercial property worth millions, or you are facing an aggressive school district counter-complaint, an attorney or tax representative can be worth the cost. For residential properties under $500,000, self-representation works for the large majority of complainants.

What happens if you disagree with the Board of Revision's decision?

You have two paths after an unfavorable BOR decision.

Ohio Board of Tax Appeals (BTA). File a notice of appeal with the BTA within 30 days of the mailing date of the BOR's decision ^[6]. The BTA is a state-level administrative body that reviews BOR decisions. Proceedings are more formal, you may need to present a full record, and hearings run in Columbus or by video. The BTA can affirm, reverse, or modify the BOR's decision.

Common Pleas Court. As an alternative to the BTA, you can appeal directly to the Court of Common Pleas in your county within the same 30-day window ^[6]. Court appeals cost more and move slower. They are the right move only when serious money is at stake and you have legal representation.

If the BTA rules against you, you can appeal to the Ohio Court of Appeals and, past that, the Ohio Supreme Court. Most residential complainants stop at the BTA if the BOR denies their complaint. Many find that a well-prepared BOR presentation makes going further unnecessary.

Frequently asked questions

Can I file an Ohio Board of Revision complaint online?

A small number of Ohio counties have begun accepting electronic filings, but most still require a paper Form DTE 1 submitted in person or by mail. Call your county Board of Revision clerk before assuming online submission is available. If you mail the form, use certified mail and keep the receipt. The postmark must be on or before March 31.

What is the difference between the appraised value and the assessed value on my Ohio tax bill?

Ohio taxes property on assessed value, which is 35% of the auditor's appraised (true market) value. If your auditor says your home is worth $300,000 (appraised value), your assessed value is $105,000. Your tax bill is calculated on that $105,000. When you file Form DTE 1, you argue about the appraised (true) value, and the assessed value adjusts automatically.

Can I file a complaint on a property I just bought?

Yes. Recent purchasers have standing to file as an owner. If you bought the property after January 1 of the tax year at issue but before March 31 of the filing year, you can still file. Your purchase price is strong evidence of true value, provided the sale was arm's-length. Bring your Closing Disclosure and deed to the hearing.

How do I find comparable sales to use as evidence in Ohio?

Start with your county auditor's property search, which shows recent sales by neighborhood. Zillow and Realtor.com also list recent sales. Pull properties within half a mile that have similar square footage, age, lot size, and condition, with sales dates within 12 months of the January 1 lien date. Print the county auditor's record for each comp so the Board can verify the details.

What if my property has physical errors in the county's records?

Physical errors, like the wrong square footage, an extra bedroom that does not exist, or a garage that was demolished, are grounds for a complaint regardless of market conditions. Document the error with photos, a measured floor plan, a prior appraisal, or a contractor's demolition permit. The Board can correct the record and recalculate the value based on accurate characteristics.

Do I have to attend the Board of Revision hearing in person?

Some counties allow written submissions without an in-person hearing, especially for smaller residential complaints. Others require personal attendance. Check with your county BOR clerk. Attending in person is almost always better because you can answer questions and clarify your evidence in real time. If you cannot attend, ask about procedures for a written submission or phone participation.

How long does the Ohio Board of Revision process take from filing to decision?

Expect four to eight months from filing to a written decision in most counties. High-complaint-volume counties like Cuyahoga, Franklin, and Hamilton can run longer, sometimes nine to twelve months. The Board is required to hold hearings and issue decisions within the calendar year, but backlogs during reappraisal years are common. You will receive your decision by mail.

If I win my Ohio valuation complaint, do I get a refund?

If you paid taxes based on the higher value and the Board reduces your assessed value, the county will either apply the overpayment as a credit to future bills or issue a refund check, depending on county practice. Ask the BOR clerk at your hearing how refunds are processed in your county. The refund covers only the tax year at issue in your complaint.

Can a school district raise my property value through a counter-complaint?

Technically yes. Under ORC 5715.19, a school district can file a counter-complaint seeking a higher value. In practice, school districts use this right mainly to defend existing values, not to raise them above the auditor's figure, because the auditor's value is already the current starting point. The risk of a counter-complaint raising your value is real but uncommon for typical residential properties.

Is there an income or age-based exemption I should file instead of or in addition to the complaint?

Yes. Ohio's Homestead Exemption reduces the assessed value for qualifying homeowners age 65 or older, or those who are permanently and totally disabled. There is also a means-tested version for lower-income owners of any age. The Homestead Exemption and a Board of Revision complaint are separate processes and can be pursued at the same time. Contact your county auditor for Homestead Exemption eligibility and deadlines.

What is the Ohio Board of Tax Appeals and when should I consider filing there?

The Ohio Board of Tax Appeals (BTA) is a state-level body that hears appeals of Board of Revision decisions. You file a notice of appeal within 30 days of the BOR decision's mailing date. The BTA is worth pursuing if the BOR dismissed your complaint on procedural grounds, ignored substantial evidence, or if the dollar amount at stake justifies the added time and complexity. Proceedings are more formal than a BOR hearing.

Can a tenant file an Ohio valuation complaint?

Yes, under certain conditions. ORC 5715.19 allows a party contractually obligated to pay property taxes to file a complaint. A tenant who pays real property taxes directly under the lease terms may qualify. However, a standard residential renter who does not pay property taxes directly does not have standing. If you're unsure, check the statute or consult the county BOR clerk before filing.

What is the filing deadline if my county did a mid-year reappraisal or issued a revised notice?

If the county auditor mails a revised notice of assessment after January 1, you have 30 days from the mailing date of that notice to file a complaint, even if March 31 has already passed. Keep the original envelope with the postmark. The 30-day window starts on the date the notice was mailed, not the date you received it.

Sources

1. Ohio Revised Code Section 5715.19, Complaints Against Valuation: ORC 5715.19 establishes the January 1 through March 31 filing window, defines who has standing to file, permits school district counter-complaints within 30 days of certification, and restricts repeat filings without new grounds.
2. County Auditors' Association of Ohio, Member Directory: Contact information for all 88 Ohio county auditors, who administer Boards of Revision at the county level.
3. Ohio Supreme Court, Berea City School District v. Cuyahoga County Board of Revision, 106 Ohio St.3d 269 (2005): The Ohio Supreme Court has recognized an arm's-length sale price as compelling evidence of true value in Board of Revision proceedings.
4. Ohio Board of Tax Appeals, Appeals Process: A party dissatisfied with a Board of Revision decision may appeal to the Ohio Board of Tax Appeals or to the Court of Common Pleas within 30 days of the decision's mailing date.
5. Ohio Revised Code Section 5713.03, Determination of True Value: Ohio's statutory definition of true value is the price a willing buyer would pay a willing seller in an arm's-length transaction.
6. Ohio Revised Code Section 5713.01, Sexennial Appraisal: Ohio law requires a full sexennial reappraisal of all real property with a triennial update at the midpoint.
7. Franklin County Auditor, Board of Revision Filing Instructions: County-specific Board of Revision filing instructions illustrating the county-level administration of Ohio's statewide DTE 1 complaint process.
8. Cuyahoga County, Board of Revision Complaint Process: One of Ohio's highest-volume Board of Revision operations, illustrating timelines and hearing procedures for residential complainants.