Dublin commercial property owners have until Sept. 5, to challenge their new assessed values before they become final.

Franklin County Auditor Michael Stinziano announced Aug. 4, that informal Property Value Review sessions are open as part of the county's 2026 property value update. The reviews give owners a chance to dispute tentative valuations before they're locked in.

The stakes are higher on the commercial side. Dublin businesses in the Washington Township–Dublin City Schools taxing district face a commercial rate of 91.30 mills, according to the city's 2026 Guide to Taxes, which reflects 2025 effective rates. That's well above the 69.76-mill residential rate in the same district. Dublin's commercial property is concentrated along Blazer Parkway, Bridge Park and Metro Center, where the higher millage means even a modest increase in appraised value translates to a larger tax bill. Property taxes are calculated on 35% of market value.

"Property owners know their homes and businesses, and we want them to be part of the process," Stinziano said in the announcement.

How the review works

Owners can meet with the Auditor's appraisal team in person at locations across Franklin County, join virtually or simply submit documents without scheduling a session. Appointments run about 20 minutes. No decision is made on the spot. The appraisal team reviews the materials and notifies owners afterward.

Helpful documentation includes recent comparable sales, a professional appraisal, photos showing the property's condition, corrections to listed characteristics and records of significant repairs.

So far, fewer than half of 1% of the county's nearly 500,000 parcels have drawn a review request.

Stinziano said a review isn't necessary just because a value went up. The question, he said, is whether the auditor's appraised value and property details are accurate.

What happens after Sept. 5

Once the review window closes, tentative values go to the Ohio Department of Taxation for review. Final values are expected in December. Owners who still disagree after that can file a formal complaint with the Franklin County Board of Revision.

A change in appraised value doesn't translate dollar-for-dollar into a tax increase. Bills also reflect local tax rates, voter-approved levies, exemptions and how values shift across a taxing district.

A note for Dublin owners in Delaware or Union counties

Dublin straddles three counties. This review applies only to parcels in the Franklin County portion. Owners with property in the Delaware County or Union County sections of Dublin should contact those auditors separately.

Property owners can look up their tentative value or request a review at audr-kyhv.franklincountyohio.gov, by email at [email protected] or by phone at 614-525-3388.