Ohio Over-Assessed Property Value Challenge Letter Generator

If your Ohio property has been over-assessed by the county auditor, you are paying more in property taxes than the law requires. Ohio law gives every property owner the right to challenge the auditor's valuation through a formal Complaint Against the Valuation of Real Property filed with the county Board of Revision. Before filing, a well-drafted demand letter to the county auditor or assessor can sometimes resolve obvious errors—like incorrect square footage, wrong lot size, or comparable sales mistakes—without a formal hearing. Because Ohio uses a strict March 31 filing deadline and reassesses property on a fixed three-year and six-year cycle, acting quickly matters. This page explains how Ohio's assessment law works and how a demand letter fits into the appeal process.

Ohio property taxes are based on the county auditor's appraisal of your property's true value in money, which is then reduced to a 35% assessed value under Ohio Revised Code § 5715.01. Counties conduct a full reappraisal every six years and a triennial update every three years, with values set as of January 1 of the tax lien date. If you believe the auditor's value exceeds the property's actual fair market value, R.C. § 5715.19 allows you to file a Complaint Against the Valuation of Real Property (Form DTE 1) with the county Board of Revision (BOR). The BOR is a three-member panel consisting of the county auditor, treasurer, and a member of the board of county commissioners (or their designees). At the hearing, the property owner bears the burden of proving the correct value. Acceptable evidence includes a recent arm's-length sale of the subject property, a licensed appraisal, comparable sales of similar nearby properties, income and expense data for rental properties, or documentation of physical defects that reduce value. Under Ohio Supreme Court precedent, including Berea City School District v. Cuyahoga County Board of Revision, a recent arm's-length sale is the best evidence of value. School districts and other taxing authorities may file counter-complaints to defend the existing valuation, particularly when the requested reduction exceeds $50,000 in value under R.C. § 5715.19(B). Decisions of the BOR can be appealed to the Ohio Board of Tax Appeals under R.C. § 5717.01 within 30 days, or to the county court of common pleas under R.C. § 5717.05.

A demand letter in Ohio assessment disputes serves two purposes: it creates a paper record of your good-faith effort to resolve the over-assessment, and it can prompt informal correction by the auditor's office before the BOR process begins. Many Ohio county auditors maintain informal review procedures where staff will re-examine the appraisal record if you submit credible evidence of error. Your letter should be addressed to the county auditor and clearly identify the parcel by parcel number, owner name, and property address. State the auditor's current value, the value you believe is correct, and the basis for that opinion—attach copies of any appraisal, comparable sales, closing statement from a recent purchase, or photographs documenting condition issues. Cite R.C. § 5715.19 and request that the auditor either correct the value administratively or confirm in writing that you must proceed to the Board of Revision. Set a reasonable response deadline (typically 14 to 21 days) that still leaves time to file Form DTE 1 before the March 31 statutory cutoff. Keep the tone factual and professional; the same letter and exhibits often become the foundation of your BOR complaint and any later appeal to the Board of Tax Appeals. Sending by certified mail with return receipt preserves proof of delivery.

There is no filing fee to submit Form DTE 1 to the county Board of Revision in Ohio. Complaints must be filed between January 1 and March 31 of the tax year following the lien date you are challenging. Only one complaint per triennium is generally permitted under R.C. § 5715.19(A)(2) unless an exception applies, such as a recent sale, substantial improvement, or casualty loss. Appeals to the Ohio Board of Tax Appeals must be filed within 30 days of the BOR decision. Small claims court is not available for property tax assessment disputes—Ohio's $6,000 small claims limit does not apply because exclusive jurisdiction lies with the BOR. Property owners may represent themselves; corporations and LLCs may also self-represent at the BOR level under recent Ohio law changes.