///FLORIDA · COUNTY GUIDE
The 2026 deadline to appeal a Orange County property tax assessment is September 18, 2026. The filing window runs from August 24, 2026 to September 18, 2026.
For valuation petitions, petitions must be filed by the 25th day following mailing of the Truth in Millage / TRIM notice from the Property Appraiser. Orange County's official 2026 VAB page and FAQ state the 2026 valuation petition filing deadline is Friday, September 18, 2026. Exemption/classification denial petitions use a parcel-specific rule: 30 days following the date/mailing of the denial letter from the Property Appraiser's Office.
| 2026 appeal deadline | September 18, 2026 |
|---|---|
| Filing window opens | August 24, 2026 |
| File with | Orange County Value Adjustment Board Clerk |
| Governing jurisdiction | Orange County Value Adjustment Board |
| After a successful appeal | A reduction applies to that tax year; non-homestead assessments can rise up to 10% a year, so it is worth filing in every year the value is wrong. |
| Can a board raise the value? | Yes — see below (Fla. Admin. Code R. 12D-9.025(6)(c)) |
| Deadline source | Value Adjustment Board | Orange County Comptroller, FL |
| Last verified | August 16, 2026 |
The 2026 deadline is September 18, 2026. The window opens August 24, 2026. For valuation petitions, petitions must be filed by the 25th day following mailing of the Truth in Millage / TRIM notice from the Property Appraiser. Orange County's official 2026 VAB page and FAQ state the 2026 valuation petition filing deadline is Friday, September 18, 2026. Exemption/classification denial petitions use a parcel-specific rule: 30 days following the date/mailing of the denial letter from the Property Appraiser's Office.
Appeals are filed with the Orange County Value Adjustment Board Clerk. The governing jurisdiction is the Orange County Value Adjustment Board.
Florida counties mail a TRIM notice (Truth in Millage) in August, and a petition to the county Value Adjustment Board is due 25 days after the notice is mailed. Petitions are typically heard by a special magistrate, and many resolve on the evidence or in an informal conference with the property appraiser first. Non-homestead assessments can rise up to 10% a year, so a value that starts high keeps compounding — a reduction applies to that tax year, which is why it is worth filing in every year the assessment is wrong.
It can happen — in Florida the property appraiser may revise a value upward where a factual error in the physical record is discovered during the appeal (Fla. Admin. Code R. 12D-9.025(6)(c)). That's why we check for that exposure before filing: we don't file when we see it, and if it surfaces after filing we withdraw.
Enter your address and we'll check Orange County's own records at no cost. If there's no case, we'll tell you that too.
Serving Florida's major metropolitan counties.
Florida property tax appeals. Any estimate is based on county assessment data and public records and is not a guarantee of any outcome. Representation and fee terms are provided in writing before any filing. Deadline information reflects published county materials as of the date shown above — verify with the Orange County Value Adjustment Board Clerk before relying on it.