Duval County Property Tax Appeal Guide 2026: TRIM Notices, VAB Petitions & Jacksonville Deadlines

Duval County mails its TRIM notices earlier than most large Florida counties, which means Jacksonville owners get the shortest runway of anyone to decide whether to fight their assessment. In 2025 the Property Appraiser mailed notices on Friday, August 15 and the petition deadline landed on Tuesday, September 9. That is roughly three and a half weeks from mailbox to closed window.

This guide covers exactly how a 2026 Duval County appeal works: when your notice arrives, how to file a Form DR-486 petition with the Value Adjustment Board, what the filing fee is now (it changed in 2025, and most guides online still have it wrong), and the evidence that actually moves a special magistrate.

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How Property Tax Assessment Works in Duval County

Two numbers drive your bill: the just value set by the Duval County Property Appraiser (Joyce Morgan, CFA), and the millage rates set by the City of Jacksonville, the school board, and the other taxing authorities. You cannot appeal the millage. You can appeal the value, and that is where the money is.

Every January 1 the Property Appraiser establishes just value for every parcel in the county. Duval is a consolidated city-county government, so one office handles what would be several jurisdictions elsewhere, across hundreds of thousands of parcels. That volume is appraised by a computer-assisted mass appraisal model, not by anyone walking your property. The model works well on average and badly on individuals: it misses deferred maintenance, dated interiors, drainage and flood problems, an odd lot shape, or a block where recent sales simply do not support the number it produced.

Under Fla. Stat. 193.011, just value must reflect eight statutory factors, including present cash value, highest and best use, condition, and the net proceeds of a sale. If the appraiser's number ignores what your specific property would actually fetch, you have grounds.

Where Duval cases usually come from

• Recent buyers. The Save Our Homes cap resets when a property sells. Your first assessment after purchase is set from scratch and deserves real scrutiny.
• Beaches properties. Jacksonville Beach, Neptune Beach, and Atlantic Beach carry wide value spreads over short distances, exactly the condition mass appraisal handles worst.
• Non-homestead owners. Rentals and second homes get only the 10% non-homestead cap, and none at all on school levies, so market movement hits them hard.
• Historic and older housing stock. Riverside, Avondale, Springfield: two homes with identical square footage can be worth wildly different amounts depending on what has been done inside. The model rarely knows.

The Save Our Homes cap matters

If your Jacksonville home is homesteaded, the Save Our Homes cap (Fla. Const. Art. VII, and Fla. Stat. 193.155) limits annual growth in your assessed value to 3% or the change in CPI, whichever is lower. Long-time owners are often assessed far below market, and for them an appeal frequently saves nothing. Two things to keep straight:

• The cap protects assessed value, not just value. The Property Appraiser's just value can still be wrong, and lowering it resets a lower baseline your future capped increases grow from.
• New buyers lose the previous owner's cap entirely. The year after you purchase, assessed value can jump to full just value. That is the single most common trigger for a worthwhile Duval appeal.

The 2026 Duval County Appeal Timeline

Florida's calendar is statutory, so it is predictable even before your county publishes exact dates.

As of late July 2026 the Duval County Property Appraiser has not yet published the exact 2026 TRIM mailing date, and the Value Adjustment Board lists the 2026 petition deadline as "TBD." That is normal at this point in the season. What is fixed by statute is the rule: you have 25 days from the date the TRIM notice is mailed to file (Fla. Stat. 194.011(3)(d)). The controlling date is printed in the bottom right corner of your own notice. Do not plan around any date you read online, including this one, once your notice is in hand.

Step 1: Read Your TRIM Notice the Day It Arrives

TRIM stands for Truth In Millage. The notice is a proposal, not a bill. It shows last year's and this year's just value, assessed value, exemptions, and what each taxing authority proposes to levy. Check:

• Just value against a realistic sale price. If you could not sell for the just value shown, that gap is your appeal.
• Missing exemptions. Homestead, senior, veteran, widow/widower, and disability exemptions that were dropped or never applied are their own petition type.
• Wrong property characteristics. Square footage, bedroom and bath count, year built, lot size, pool or no pool. Errors here inflate value mechanically.
• Portability. If you moved within Florida and transferred a Save Our Homes benefit, confirm it was applied.
• The deadline itself. Bottom right corner. Write it on the calendar before you put the notice down.

Step 2: Call the Property Appraiser First

Before filing anything formal, contact the Duval County Property Appraiser's office and request a review. Factual errors, wrong square footage, a pool that does not exist, a condition problem nobody recorded, get corrected at this stage without a hearing. It is free, it is fast, and it does not waive your right to petition afterward.

One caution: the informal review does not extend the 25-day VAB deadline. Start it the week your notice arrives, and file your petition anyway if the clock is running out before the office responds.

Step 3: File Your VAB Petition (Form DR-486)

If the informal route does not resolve it, petition the Duval County Value Adjustment Board:

• Form: DR-486, Florida's statewide VAB petition. Variants exist for portability (DR-486PORT) and exemption or classification denials.
• Fee: up to $50 per parcel. This changed recently and matters: Fla. Stat. 194.013 was amended by Chapter 2025-208, Laws of Florida, raising the cap from $15 to $50 effective July 1, 2025. The Duval VAB states its fee as up to $50 per parcel. Homeowners appealing a timely-filed homestead exemption denial are exempt from the fee.
• Where: the Duval County Value Adjustment Board, administered through the City of Jacksonville. Filing details and forms are on the VAB's page at jacksonville.gov.
• Who hears it: a special magistrate, an independent appraiser or attorney, who takes evidence at a short informal hearing and issues a recommended decision the Board then ratifies.

Under Fla. Stat. 194.301, once you present credible, admissible evidence, the burden shifts to the Property Appraiser to prove the assessment is correct. That is a real structural advantage, and it is why a prepared petitioner does disproportionately well.

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Step 4: Build Evidence That Actually Wins

Special magistrates rule on evidence, not on how unfair the number feels. The strongest Duval petitions carry:

1. Comparable sales or comparable assessments. Three to seven similar properties in your area that sold below your just value, or that are assessed below yours on a per-square-foot basis. Match on size, age, condition, and location. Sales closest to January 1, 2026 carry the most weight.
2. Your own purchase price. If you bought near the assessment date for less than the just value, that arm's-length sale is powerful.
3. Condition problems. Photographs and contractor estimates for roof, foundation, plumbing, flood, or code issues the model never saw.
4. The Property Appraiser's own record errors. Pull your property card and flag any wrong square footage, feature, or lot dimension. This is the single easiest win available.
5. Income data, for rentals and commercial: actual rent rolls and operating expenses showing the model over-valued the income stream.

Two rules that quietly decide cases: the clerk must receive your petition by the deadline (a postmark does not count), and evidence you want considered should be exchanged on the schedule the VAB sets, not sprung at the hearing.

Is a Duval County Appeal Worth It?

Run the math before you spend the afternoon. Duval's effective property tax rate runs near 0.9% to 1% of value. A $30,000 reduction in assessed value is therefore roughly $270 to $300 a year. Against a filing fee of up to $50, that is a strong return, and because Save Our Homes and the 10% non-homestead cap both grow from your new lower baseline, the reduction keeps paying every year you own the home.

The honest counter-case: if you have held a homesteaded Jacksonville home for many years, your assessed value is probably far below market and there is nothing to win. Check the gap before you file. That check is free and takes about half a minute.

Frequently Asked Questions

When is the Duval County property tax appeal deadline for 2026? Twenty-five days after your TRIM notice is mailed. The Property Appraiser had not published the 2026 mailing date as of late July 2026, and the VAB lists the deadline as TBD. For reference, 2025 notices mailed August 15 with a September 9 deadline. Use the date printed on your own notice.

How much does it cost to appeal in Duval County? Up to $50 per parcel for the VAB petition. Florida raised the statutory cap from $15 to $50 effective July 1, 2025 (Fla. Stat. 194.013, as amended by Ch. 2025-208). The informal review with the Property Appraiser is free.

Do I need a lawyer? No. Florida law lets you file and present your own case, and most residential petitioners do. Magistrate hearings are short and informal.

Will appealing raise my assessment? No. A petition challenges the current year's just value. The magistrate can lower it or leave it alone. The process is not a mechanism to raise your value above the Property Appraiser's number.

What if I miss the deadline? You generally lose the VAB hearing for that year, though a late petition can be reviewed for good cause at the Board designee's discretion. Beyond that, Fla. Stat. 194.171 allows a circuit court action, which is a far heavier and costlier path. The practical answer is to set a reminder now for the August mailing.

What is the difference between just value and assessed value? Just value is Florida's term for market value. Assessed value is just value after caps and adjustments such as Save Our Homes. You appeal just value even when your assessed value is capped.

Don't Leave Money on the Table

Duval mails early, so Jacksonville owners lose the window faster than most of Florida. Read the notice the day it lands, check the just value against what your home would really sell for, call the Property Appraiser about any factual error, and get your DR-486 in before the 25 days run out.

Want to know where you stand before the notice even arrives? AppealMyTax compares your Duval County assessment to similar homes from the state roll and tells you in about 30 seconds whether a petition is worth filing. If it is, the flat $49 kit builds the evidence package for you. Check your assessment now

Related reading: Florida property tax appeals, statewide · TRIM season prep · The Florida cap gap study · Hillsborough County guide · Orange County guide · Broward County guide · Miami-Dade County guide · Palm Beach County guide

This guide is general information, not legal advice, and reflects Florida procedure under Chapters 193 and 194, Florida Statutes. Filing fees and deadlines are set by statute and by each county's Value Adjustment Board. Always verify the exact date printed on your official Duval County TRIM notice.

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