///FLORIDA · COUNTY GUIDE
The 2026 deadline to appeal a Duval County property tax assessment is September 8, 2026. The filing window runs from January 1, 2026 to September 8, 2026.
The Duval County Value Adjustment Board, administered by the City of Jacksonville, states the 2026 filing deadline for most VAB petitions is Tuesday, September 8, 2026, with online filing closing at 11:59 p.m. that day. The date reflects the 25 day window after TRIM notices mail under Section 194.011(3)(d), Florida Statutes, and the county notes it is subject to change.
| 2026 appeal deadline | September 8, 2026 |
|---|---|
| Filing window opens | January 1, 2026 |
| File with | Value Adjustment Board, c/o Office of the Clerk of the Circuit Court, 117 West Duval Street, Suite 305, Jacksonville, FL 32202, or online |
| Governing jurisdiction | City of Jacksonville / Duval 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, City of Jacksonville |
| Last verified | August 16, 2026 |
The 2026 deadline is September 8, 2026. The window opens January 1, 2026. The Duval County Value Adjustment Board, administered by the City of Jacksonville, states the 2026 filing deadline for most VAB petitions is Tuesday, September 8, 2026, with online filing closing at 11:59 p.m. that day. The date reflects the 25 day window after TRIM notices mail under Section 194.011(3)(d), Florida Statutes, and the county notes it is subject to change.
Appeals are filed with the Value Adjustment Board, c/o Office of the Clerk of the Circuit Court, 117 West Duval Street, Suite 305, Jacksonville, FL 32202, or online. The governing jurisdiction is the City of Jacksonville / Duval 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 Duval County's own records at no cost. If there's no case, we'll tell you that too.
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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 Value Adjustment Board, c/o Office of the Clerk of the Circuit Court, 117 West Duval Street, Suite 305, Jacksonville, FL 32202, or online before relying on it.