Ohio gives you one filing season: January 1 through March 31. File a DTE Form 1 complaint with your county Board of Revision, bring real evidence, and your county must review your value. After record-setting reappraisal jumps across Ohio, more homeowners than ever have a case.
Look up your parcel on your county auditor's site — appraised value, square footage, bed/bath count, lot size. Wrong characteristics alone can win a reduction.
Recent sales of similar homes, a recent purchase of your own home, photos of condition issues, or an appraisal. Our free scraper pulls county auditor records into a CSV.
File with your county Board of Revision between January 1 and March 31 — online in most large counties, or by mail (postmark counts).
Present your case at the BOR hearing (many counties offer phone/video). Disagree with the decision? Appeal to the Board of Tax Appeals or common pleas court within 30 days.
Ohio generally allows one valuation complaint per three-year interim period (R.C. 5715.19) unless a qualifying event occurs — a sale, casualty loss, or substantial improvement. Make your filing count: bring comps, not just frustration.
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Ohio taxes 35% of appraised value at your district's effective millage. A BOR reduction typically holds until the county's next triennial update or sexennial reappraisal. The 1.53% default approximates the statewide average effective rate. Estimates only; not tax advice.
Enter recent sales of similar homes (or import a CSV from our free county auditor scraper). The worksheet computes price per square foot and a suggested value for your property.
| Address | Sale Date | Sale Price ($) | Sq Ft | $/Sq Ft |
|---|
| Item | Ohio Rule |
|---|---|
| Filing window | January 1 – March 31 for the prior tax year (R.C. 5715.19) — no extensions |
| Form | DTE Form 1 — Complaint Against the Valuation of Real Property |
| File with | Your county Board of Revision (auditor's office) — online, in person, or by mail (postmark counts) |
| Frequency | Generally one complaint per triennial period, unless sale/casualty/improvement |
| Values | Assessed value = 35% of appraised (market) value |
| Next level | Ohio Board of Tax Appeals or common pleas court within 30 days of BOR decision |
| Records | Every county auditor publishes a free parcel search — see our scraper for Franklin, Cuyahoga, Hamilton & more |