Last updated 2026-07-10
TL;DR
Ohio homeowners challenge their property's value by filing a Complaint Against the Valuation of Real Property (DTE Form 1) with their county Board of Revision by April 1 of the year after the tax year in dispute. The process is free and needs no attorney. A win cuts your taxes for the full three-year triennial cycle.
What is the Ohio Board of Revision and who runs it?
Every Ohio county has a Board of Revision (BOR). It is a three-member panel: the county auditor, the county treasurer, and a member of the board of county commissioners (or their designated representatives). The auditor usually chairs the meetings. [1]
The BOR exists for one job. It hears complaints from property owners (and from school districts, which can also file) about whether a parcel's taxable value is right. It is not a court. It follows the procedural rules in Ohio Revised Code (ORC) Chapter 5715, and its decisions can be appealed further. For most homeowners, though, this is the first and only stop that matters.
The BOR does not set tax rates. It only adjusts the value of your property. Lower the value, lower the bill. That is the whole game.
What is the deadline to file an Ohio BOR complaint?
The deadline is April 1 of the tax year following the year you are challenging. [2] Plain version: to fight your tax year 2024 value, you file by April 1, 2025. Miss that date and you lose the right to complain for that year. No grace period, no exceptions.
Ohio runs on a triennial cycle. The county auditor revalues every parcel every three years, with two "update" years in between. You can still file in a non-reappraisal year, but you have to show a change in value, a clerical error, or a sale at a price different from the assessed value. [3]
The table below shows the filing windows that matter.
| Event | Deadline |
|---|---|
| File DTE Form 1 with county BOR | April 1 of the complaint year |
| BOR must hold hearing (after filing) | Within 180 days of journal entry [2] |
| Appeal BOR decision to BTA | 30 days after BOR decision mailed [4] |
| Appeal BTA decision to Ohio Supreme Court or Common Pleas | 30 days after BTA decision [4] |
Here is a nuance that saves people. If you buy a property and the sale price comes in below the county's assessed value, you have until April 1 of the year following the sale to file, even mid-cycle. A real arm's-length sale is the single strongest piece of evidence you can carry into that room. [3]
Which properties can be complained about?
Any real property in Ohio carrying a taxable value on the county auditor's rolls can be complained about. Houses, condominiums, vacant land, commercial buildings, industrial parcels. All of it qualifies. [1]
Personal property (cars, business equipment) goes through a separate process. Manufactured homes taxed as real property follow the same BOR route as any other parcel.
One restriction is worth knowing. You cannot refile on the same parcel for the same tax year once the BOR has ruled, unless there is new evidence that existed at the time but was not available. That is the "res judicata" bar under ORC 5715.19(A). [2]
How do you file a BOR complaint in Ohio: step by step
Step 1: Get the right form. The state form is DTE Form 1, "Complaint Against the Valuation of Real Property." Download it from the Ohio Department of Taxation site or grab it at your county auditor's office. [5] Many large counties post their own versions, but DTE Form 1 works everywhere.
Step 2: Fill in the parcel information. You need the parcel number (on your tax bill or the auditor's online search), the address, your name and contact details, and the tax year you are challenging.
Step 3: State the value you think is correct, and why. This is the line people leave vague and regret it. Do not write "it seems too high." Write the exact dollar figure you believe is fair, and check the basis: overvaluation, undervaluation, discriminatory valuation, or clerical error. [5]
Step 4: Attach evidence now or bring it to the hearing. You can submit documents with the form or present them the day of. The evidence section below covers what actually moves a board.
Step 5: File with the county BOR. Delivery rules vary. Most counties take in-person filing at the auditor's office and mail, and a growing number accept email or online uploads. Confirm your county's methods before April 1. Keep a time-stamped copy of everything.
Step 6: Wait for the hearing notice. The BOR must schedule a hearing within 180 days. You will get written notice of the date and time. Show up, or request a continuance in writing if you need more prep time. [2]
Filing fee: none. Ohio charges nothing to file a BOR complaint. [1]
What evidence actually wins an Ohio BOR hearing?
The strongest evidence, by a wide margin, is a recent arm's-length sale of your own property below the assessed value. Say you bought your home for $210,000 and the county has its market value at $280,000 (a taxable value of $98,000 at Ohio's 35% ratio). That purchase price is close to conclusive. The Ohio Supreme Court has held for years that a recent arm's-length sale is the best indicator of true value. [3]
No recent purchase? Comparables (comps) are your next best tool. Pull three to six recent sales of similar homes near you from the county auditor's site, Zillow, or Realtor.com. Similar means close on square footage, same bed and bath count, same rough condition, sold within the past 12 months, within a mile or two. Put them in a simple table and show what they imply about your value.
A licensed appraisal is the gold standard when the property is high-value or the gap between your number and the county's is wide. An appraisal dated within 12 months of the tax lien date (January 1 of the tax year) carries the most weight. Residential appraisals run $300 to $600, sometimes more in urban markets.
Other evidence that helps:
- Listing history showing the property sat unsold at the assessed-value price.
- A contractor's estimate or repair receipts for deferred maintenance, foundation problems, or a bad roof that mass appraisal never sees.
- Photos of condition issues, especially next to the auditor's property card, which often shows the wrong condition grade or square footage.
- An auditor's property record card with factual errors (wrong bed/bath count, wrong square footage, wrong year built). These are more common than you would think, and fixing them alone can drop the value.
What does not help: your mortgage payment, your income, your neighbor's opinion, or how high the bill feels. The BOR answers a value question, not a hardship question. Hardship relief lives in a separate program (look at Ohio's Homestead Exemption or the owner-occupancy credit).
If you want a structured way to organize comps and build the argument before the hearing, the TaxFightBack appeal kit walks through the exact table format and evidence checklist Ohio BOR panels respond to.
What happens at the Ohio BOR hearing?
BOR hearings are informal next to a courtroom, but they are official proceedings. The board members sit at a table, you present your case, they ask questions. A residential case usually runs 10 to 20 minutes.
Bring printed copies of every document for yourself and three board members (four total). Open by stating the parcel number, the current value, and the value you think is right. Then walk your evidence in order of strength. Keep it tight. Board members hear dozens of complaints per session.
You can bring a representative, an attorney, or a tax agent. You are also fully entitled to appear alone, and boards do not look down on that. They ask plain questions: "Why do you think this value is wrong?" "What do these sales tell you?" Answer directly.
The county auditor's office may send someone to defend the current value. That is normal. They may offer a negotiated reduction before or during the hearing. You can take it, counter, or push for a full decision.
After the hearing, the board deliberates and issues a written decision, usually within a few weeks to a few months. It comes by mail.
What if a school district files a counter-complaint on your property?
This is the part that blindsides Ohio homeowners most. Under ORC 5715.19(B), if you file a BOR complaint, the school district where your property sits can file a counter-complaint seeking a higher value. [2] Districts watch BOR filings closely and file counter-complaints often, especially in counties where values have jumped.
A counter-complaint means the board could raise your value above what the auditor already set. That is a real risk.
It matters most when your property recently sold well above the current assessed value and you are trying to protect that gap. In that spot, filing can backfire hard. Think it through before you file if your home sold significantly above its assessed value and the sale is recent and clearly arm's-length.
If a district does file against you, the hearing covers both complaints. You get notice and the right to present rebuttal evidence. The district carries the same burden you do: it must show a value different from the county's.
How does Ohio's 35% assessment ratio affect your complaint?
Ohio taxes real property at 35% of its estimated true (market) value. [6] So if the auditor estimates your home's market value at $300,000, the assessed value on your bill is $105,000. When you file, you are technically challenging the "true value" (market value) determination, not the assessed line directly, though both numbers show on the form.
That shapes your evidence. Your comps and appraisal should target market value. The BOR does the 35% math for you. If you argue your true value is $220,000 instead of $300,000 and win, the assessed value falls to $77,000.
The 35% ratio comes from the Ohio Constitution (Article XII, Section 2) and no county can change it. [6] What you can change is the base number that ratio applies to.
What are the possible outcomes of an Ohio BOR complaint?
The board has four options after a hearing:
1. Dismiss your complaint (no change). 2. Reduce the value to what you asked for. 3. Reduce the value by less than you asked (a partial win). 4. Raise the value above the auditor's figure (rare, usually driven by a school district counter-complaint).
A reduction applies to the tax year you complained about and carries forward through the triennial cycle unless a new complaint or reappraisal changes it. One successful complaint can mean three years of savings.
If the board dismisses your complaint or gives you less than you think is fair, you have 30 days from the mailing date of the decision to appeal to the Ohio Board of Tax Appeals (BTA). [4] The BTA is a state agency in Columbus with its own rules and a formal briefing process. Most homeowners handle the BOR themselves but hire a tax attorney for the BTA, where complexity climbs fast.
Can you appeal a BOR decision further?
Yes. The BTA is the next stop. Filing there means submitting a Notice of Appeal within 30 days of the BOR decision mailing date, paying a filing fee (currently $25 per parcel on the BTA fee schedule), and eventually filing a written brief. [4]
From the BTA, decisions can go to the Ohio Supreme Court or the Court of Common Pleas for the county where the property sits, depending on the legal basis. At that stage you almost certainly need a lawyer.
For most homeowners with a house in the $150,000 to $500,000 range, the BOR is where the case ends, one way or the other. The BTA is slow (cases can run 18 to 36 months) and expensive against the savings on a modest home.
How do Ohio BOR outcomes compare to the statewide complaint volume?
Ohio's 88 counties process tens of thousands of BOR complaints a year. The Ohio Department of Taxation publishes annual property tax statistics on this activity. In high-complaint years after triennial reappraisals, Cuyahoga, Franklin, Hamilton, and Summit counties each see several thousand complaints. [7]
Homeowners who show up with real evidence do better than those who file and hope. No statewide figure breaks out "represented vs. self-represented" success rates. What the Department of Taxation data does show is that complaints withdrawn before hearing (common when the owner has nothing to present) are the most frequent non-reduction outcome.
Showing up matters. The board cannot cut your value if you never appear and never submit evidence.
For how Ohio compares elsewhere, the county-level processes in Cook County and Los Angeles County follow similar complaint-and-hearing structures, though their timelines and fee rules differ.
Are there special exemptions or credits you should file alongside your complaint?
A BOR complaint targets value. Separately, Ohio has two programs that cut taxes regardless of value:
The Homestead Exemption reduces the assessed value subject to tax by $26,200 for qualifying seniors and disabled homeowners (as of 2024, adjusted periodically). [8] If you are 65 or older, permanently and totally disabled, or a surviving spouse who meets the criteria, you may qualify. File with the county auditor, not the BOR. An income means test applies to some categories, so check current auditor guidance.
The Owner-Occupancy Credit (the old "2.5% rollback") gives a credit to owner-occupied homes. It applies automatically when the parcel is coded as owner-occupied, but it pays to confirm with the auditor that your parcel is flagged right.
Filing for an exemption or credit is not a BOR complaint. Different forms, different offices, different deadlines. Pursue both if you qualify.
The TaxFightBack DIY appeal kit includes a checklist of Ohio exemptions to verify before and after your BOR complaint, so you are not leaving money on the table by chasing value alone.
What are the common mistakes Ohio homeowners make at the BOR?
Missing the April 1 deadline is the most common mistake and the most fatal. There is no grace period. [2]
Filing with no evidence is second. Boards feel for homeowners whose taxes feel too high, but feelings do not change the record. The board needs something on paper to justify a cut.
Using weak comps is third. Sales from a different neighborhood, a different property type, or three years back will not hold up. Auditors and their reps know the local market cold. Bad comps can sink your credibility.
Not attending the hearing. File and skip it, and most Ohio counties dismiss the complaint for lack of prosecution. Some counties allow written submissions instead of appearance, but confirm that with your county BOR before the hearing date.
Forgetting about school district counter-complaints. Buy below assessed value and file to lock in that lower price, and you are on solid ground. Sold above assessed value and file for some other reason, and you have just waved at the school district.
Confusing rate appeals with value appeals. The BOR cannot touch your tax rate, your millage, or school levies. Those come from entirely different processes. The complaint is a value question, full stop.
Frequently asked questions
What form do I use to file an Ohio property tax complaint?
Use DTE Form 1, "Complaint Against the Valuation of Real Property," from the Ohio Department of Taxation website or your county auditor's office. Some counties have their own version, but the state DTE Form 1 is accepted in all 88 counties. Fill in the parcel number, the tax year, your contact information, the value you think is correct, and the legal basis for your complaint.
Can I file an Ohio BOR complaint every year?
Yes, with conditions. You can file annually, but if you filed on the same parcel for the same tax year and the BOR already ruled, you cannot refile for that year. Ohio also limits non-reappraisal-year complaints: you must show a change in circumstances, a sale, or a clerical error. In triennial reappraisal years, any owner can file without showing a change.
How long does the Ohio BOR process take from filing to decision?
The BOR must hold a hearing within 180 days of the journal entry of your complaint. Decisions typically come a few weeks to a couple of months after the hearing. Total time from filing to decision commonly runs four to eight months. If you then appeal to the Board of Tax Appeals, add 18 to 36 months.
Do I need a lawyer to file an Ohio BOR complaint?
No. Ohio law does not require an attorney for a BOR complaint, and the board is used to self-represented homeowners. You can also name a non-attorney representative, such as a licensed tax agent. Most homeowners handle residential BOR cases themselves. Legal help becomes worth considering if the case goes to the Board of Tax Appeals or involves a high-value commercial property.
What is the Ohio Board of Tax Appeals and how is it different from the BOR?
The Board of Tax Appeals (BTA) is a state agency in Columbus that hears appeals from BOR decisions. Unlike the BOR, the BTA requires a formal written brief, follows a structured schedule, and charges a filing fee (currently $25 per parcel). Cases can take 18 to 36 months. You must file a Notice of Appeal within 30 days of the mailing date of the BOR decision.
Can a school district increase my property value at the BOR?
Yes. Under Ohio Revised Code 5715.19(B), a school district may file a counter-complaint seeking a higher value if you file on a property in its jurisdiction. This is most common when a property recently sold above its assessed value. If a counter-complaint is filed, the hearing covers both, and the board could raise your value above what the auditor had.
What does Ohio's 35% assessment ratio mean for my complaint?
Ohio taxes real property at 35% of estimated true (market) value. If the auditor sets your market value at $300,000, your assessed value is $105,000, and your bill runs off that $105,000. Your complaint targets the market value estimate. Prove the market value should be $220,000 and the assessed value drops to $77,000. Your evidence should speak to market value, not the assessed figure.
What happens if I win my BOR complaint?
The board issues a written order reducing the value. The county auditor updates the records and issues a corrected bill or a refund for any tax already overpaid for that year. The reduced value carries forward through the triennial cycle, so you keep the savings for up to three years without refiling, unless a new reappraisal or sale changes it again.
How do I find comparable sales to use as evidence in Ohio?
Start with your county auditor's online property search, which most Ohio counties provide with sale history. Zillow and Realtor.com carry sale data too. Look for properties close in size, age, condition, and neighborhood that sold within the past 12 months. Three to six strong comps, organized in a table with sale price per square foot, make a solid presentation.
Is there a filing fee to file an Ohio BOR complaint?
No. Filing a DTE Form 1 complaint with your county Board of Revision is free. Ohio charges nothing at the BOR level. If you later appeal a BOR decision to the Board of Tax Appeals, there is a $25 per-parcel filing fee at that stage.
What if the auditor's property record card has the wrong square footage or bedroom count?
That is a clerical error and one of the strongest grounds for a complaint. Document it with a measurement or a floor plan and note it on DTE Form 1 under "clerical error." Boards correct these readily because there is no judgment involved. Check your auditor's online property card before filing to catch discrepancies in size, year built, or condition grade.
Can I file an Ohio BOR complaint on a commercial property?
Yes. The BOR process covers all real property in Ohio, including commercial and industrial parcels. The evidence standards are the same, but commercial cases often use income-approach appraisals along with or instead of comparable sales. For complex commercial properties, a licensed appraiser and sometimes a tax attorney are worth the cost given the tax dollars at stake.
What is the Ohio Homestead Exemption and does it affect my BOR complaint?
The Homestead Exemption reduces taxable assessed value by $26,200 for qualifying seniors (65 or older) and permanently disabled homeowners, saving roughly $400 to $500 a year in many counties. You file it separately with the county auditor, not through the BOR. It does not replace a value complaint; the two stack. If you qualify, pursue both.
Sources
- Ohio Revised Code, Chapter 5715 (Ohio Laws): Board of Revision composition (county auditor, treasurer, commissioner representative) and jurisdiction over real property valuation complaints
- Ohio Revised Code 5715.19, Complaint Against Valuation: April 1 filing deadline, 180-day hearing requirement, school district counter-complaint right, and res judicata bar on re-filing same tax year
- Ohio Supreme Court, Berea City School District v. Cuyahoga County Board of Revision, 106 Ohio St.3d 269 (2005): Recent arm's-length sale price is the best indicator of true value for BOR complaint purposes
- Ohio Board of Tax Appeals (official state agency site): 30-day deadline to appeal BOR decision to the BTA; $25 per-parcel filing fee at BTA level
- Ohio Constitution, Article XII, Section 2 (Ohio Laws): Ohio real property is assessed at 35% of estimated true value as established in the state constitution
- Ohio Revised Code 5713.01, Appraisal of Real Property: County auditor required to appraise all real property at true value; triennial reappraisal cycle established by statute
- Cuyahoga County Board of Revision, Filing Instructions: County-level procedural guidance on filing methods, hearing scheduling, and evidence submission for BOR complaints
- Franklin County Auditor, Board of Revision Information: Franklin County BOR process, accepted filing methods, and county-specific procedural notes