Duval County Property Tax Appeal — Deadline & How to File 2026
25 days after your TRIM noticeNo single calendar date — the clock starts when YOUR Duval County value notice is mailed (25 days).
Yes — you can appeal your Duval County assessment. The deadline is 25 days after your TRIM notice (≈ mid-September), so the clock (25 days) starts the day your notice is mailed. File with the Value Adjustment Board (VAB).
Notice-relative deadline — confirm the exact 2026 date printed on your notice / with the Value Adjustment Board (VAB).
Is my property over-assessed in Duval County?
You're over-assessed when the County's value is higher than what your home would actually sell for — and then you're over-paying every year until you appeal. Florida petitions to the county Value Adjustment Board are due 25 days after the Property Appraiser mails the TRIM (Truth-in-Millage) notice — typically mid-August, so the deadline falls in mid-September, per Fla. Stat. §194.011. Check the exact date printed on your TRIM notice.
Honest null: Duval County's assessment roll isn't onboarded into our live check yet, so we can't pull your specific over-assessment here. Compare your assessed value to recent nearby sales on the county assessor portal — if it's higher than what your home would sell for, you're over-assessed and should appeal by the deadline above.
How to appeal your Duval County assessment — and who files it for you
Pull your current assessed value from the Duval County assessor portal.
Find your market value — a recent sale of your home, or comparable nearby sales.
If the County's number is higher, file an appeal with the Value Adjustment Board (VAB) by 25 days after your TRIM notice (≈ mid-September).
Present your comparables (and any appraisal) at the hearing.
Most owners who win use a contingency property-tax appeal firm — it costs nothing unless they cut your bill, then takes a share of the first-year saving. About 95% of over-assessed owners never appeal, so the saving is usually left on the table.
What is the Duval County appeal deadline this year?
25 days after your TRIM notice (≈ mid-September) (the clock starts when your notice is mailed).
How much does it cost to appeal?
Usually a small filing fee or none; a contingency firm only charges if it wins a reduction.
I got a reassessment notice — what now?
It's the County's new market-value opinion and the start of your appeal window. Check it; appeal by 25 days after your TRIM notice (≈ mid-September) if it over-states your home's value.
Will appealing raise my taxes?
In most jurisdictions an appeal can only confirm or lower your assessment for that cycle — but confirm the rules with the Value Adjustment Board (VAB) before filing.
Source & verification
against the official Duval County / FL deadline (coj.net · Fla. Stat. §194.011). These are public deadline facts, not legal or tax advice — confirm your exact date with the Value Adjustment Board (VAB) and consult a professional before filing.