Is the County’s Market Value Too High? How to Decide Whether a VAB Challenge Is Worth Filing

This is Part 2 of our 2026 Florida Property Tax Series.

A surprising assessment is not automatically an excessive assessment. The strongest VAB cases connect reliable evidence to the property's market value on January 1, and explain why the Property Appraiser's analysis does not reach that value.

2026 Deadlines to Challenge Market or Assessed Value

Start With the Correct Question

For a valuation petition, the question is not whether the tax bill feels unfair or whether the owner could sell today for less. It is whether the county's just value exceeds the property's legally supportable market value as of January 1, 2026. If the market value appears reasonable but assessed value jumped after a transfer or cap removal, the better issue may be change of ownership, portability, exemption, or assessment limitation, subjects covered in Part 1 of this series.

Test One: Does the County Have the Property Facts Right?

A useful starting point is the property record card, building sketch, land classification, permits, photographs, and sales history. Errors in living area, bedroom or bathroom count, building quality, effective age, waterfront influence, view, condition, or permitted improvements can distort a mass-appraisal model. A factual correction is often easier to demonstrate than a broad claim that the market is “too high.” Reviews at this stage commonly involve:

• Measuring or documenting disputed square footage.
• Identifying uninhabitable, unfinished, or functionally obsolete space.
• Comparing the county sketch to surveys, plans, permits, and photographs.
• Documenting access, easements, flooding, environmental conditions, or use restrictions.

Test Two: Do the Comparable Sales Match the January 1 Property?

Good comparable sales are arm's-length transactions close in time to January 1 and similar in location, use, size, age, condition, amenities, and market appeal. A purchase price can be important evidence, especially if the sale was recent and exposed to the market, but it is not automatically controlling. Related-party transfers, distressed sales, unusual financing, portfolio transactions, or a sale followed by major work may require adjustments or carry less weight.

Cherry-picking the lowest neighborhood sales tends to backfire; the more persuasive submissions explain material differences and quantify reasonable adjustments where possible. For condominiums, line, floor, view, renovation level, assessments, reserves, and building condition may matter. For commercial property, tenancy, lease structure, vacancy, location, age, and property rights conveyed can be decisive.

Test Three: Did Condition or Casualty Damage Affect Value?

Deferred maintenance, water intrusion, structural defects, mold, roof or mechanical failure, storm damage, code issues, and required capital work can affect a willing buyer's price. The evidence should establish the condition on or before January 1, not merely a later problem. Useful support includes dated photographs, engineering or inspection reports, contractor estimates, insurance materials, permits, board minutes, and proof that the issue was not already reflected in the county's model.

Test Four: Does the Income Support the Assessment?

For income-producing property, the analysis covers market rent, actual rent, vacancy and collection loss, operating expenses, reserves, capitalization rates, and non-realty components. Actual income is relevant but not always the endpoint: below-market leases, related-party arrangements, temporary vacancy, owner-specific expenses, or business value may require normalization. A persuasive submission reconciles the income approach with comparable sales and explains why the selected capitalization rate fits the property and the January 1 market.

Test Five: Is This Really a Cap or Portability Error?

A market-value petition does not necessarily correct an improper removal of Save Our Homes, a non-homestead cap, or portability. Comparing just value to assessed value is the diagnostic: if only assessed value changed sharply, the county's change-of-ownership determination, exemption history, cap calculation, and portability worksheet deserve investigation. Selecting the correct petition issue and form matters, because a valuation argument aimed at the wrong line can waste the short review period.

The Evidence Standard Matters

Under Fla. Stat. § 194.301, the Property Appraiser's assessment is not automatically entitled to a presumption of correctness. The presumption applies only if the Property Appraiser proves by a preponderance of the evidence that the assessment was developed in compliance with the statutory valuation factors of section 193.011, other applicable requirements concerning classified-use values and assessment limitations, and professionally accepted appraisal practices, and the taxpayer is entitled to have the VAB or court evaluate the appropriateness of the appraisal methodology used.

The taxpayer, as the challenging party, generally bears the burden of proving by a preponderance of the evidence that the assessment does not represent just value after applicable assessment limitations, does not represent a required classified-use or fractional value, or is arbitrarily based on appraisal practices different from those the Property Appraiser generally applies to comparable property in the county. If the taxpayer prevails, the VAB or court must establish the assessment from competent, substantial evidence in the record that satisfies section 193.011 and professionally accepted appraisal practices, and if the record lacks sufficient evidence, the matter is remanded to the Property Appraiser with directions.

Two practical lessons follow. First, organize evidence into a coherent valuation theory rather than a stack of unexplained documents; the board and special magistrates give far more weight to comparable sales, professional appraisals, and documented condition than to subjective opinions. Second, under Fla. Stat. § 194.034, evidence that the Property Appraiser requested in writing and the taxpayer refused to provide generally cannot be introduced at the hearing.

Two Cost-Benefit Examples

Example 1: a meaningful recurring issue

Assume a commercial parcel is valued at $5,000,000 and credible evidence supports $4,400,000. At an illustrative combined millage of 20 mills, the $600,000 difference represents about $12,000 of annual ad valorem tax before exemptions, special assessments, and school-cap differences. A well-supported challenge may justify appraisal and professional costs, particularly if the correction affects future rolls.

Example 2: a small gap with high proof costs

Assume a residence is valued at $900,000 and the owner's best support is $875,000. At an illustrative 18 mills, the $25,000 gap is about $450 before considering caps and exemptions. If expert fees exceed the likely benefit and the evidence is mixed, an informal correction may be more economical. These examples are illustrations, not tax estimates; actual millage and taxable value control. As a rough frame of reference, combined millage rates in Florida typically run around 15 to 25 mills, meaning each $100,000 of disputed value commonly represents roughly $1,500 to $2,500 of annual tax before caps and exemptions.

Questions That Frame the Filing Decision

• What exact value does the evidence support as of January 1?
• Which approach, sales, cost, or income, best supports that conclusion?
• Are the county's property facts accurate?
• Can the evidence be authenticated and each adjustment explained?
• Is the disputed amount large enough to justify filing, appraisal, and professional costs?
• Is the issue recurring, or limited to one tax year?
• Has the VAB deadline been preserved while informal review proceeds?

When Professional Review Often Makes Sense

Review tends to be particularly valuable for high-value residences, unique or waterfront property, hotels, offices, retail, industrial property, development land, casualty-damaged property, and disputes involving both value and assessment caps. An attorney or qualified appraiser can help frame the legal issue, select an appraisal method, protect confidential information where applicable, and avoid evidence that undermines the intended theory.

Frequently Asked Questions

When is a Florida property's market value too high?

For a valuation petition, the question is not whether the tax bill feels unfair or whether the owner could sell today for less. It is whether the county's just value exceeds the property's legally supportable market value as of January 1 of the tax year. If market value appears reasonable but assessed value jumped after a transfer or cap removal, the better issue may be change of ownership, portability, exemption, or an assessment limitation.

What evidence works in a Florida VAB valuation challenge?

Useful evidence includes the property record card and corrections to it, arm's-length comparable sales close in time to January 1 with explained adjustments, dated documentation of condition or casualty damage existing on or before January 1, and, for income property, market rent, vacancy, expense, and capitalization-rate support. Comparable sales, professional appraisals, and documented property condition carry far more weight than subjective opinions.

Does the Property Appraiser's assessment get a presumption of correctness?

Not automatically. Under section 194.301, the presumption applies only if the Property Appraiser proves by a preponderance of the evidence that the assessment was developed in compliance with section 193.011, other applicable requirements, and professionally accepted appraisal practices. The taxpayer generally must then prove the assessment is excessive, erroneous, or unlawful by a preponderance of the evidence.

Is a VAB challenge worth filing?

The economics depend on the disputed value and the millage. As an illustration, a $600,000 valuation difference at a combined 20 mills represents about $12,000 of annual ad valorem tax, which may justify appraisal and professional costs, particularly if the correction affects future rolls. A $25,000 gap at 18 mills is about $450, where an informal correction may be more economical. Combined millage rates in Florida typically run around 15 to 25 mills.

Primary Sources and Further Reading

Current as of August 20, 2026. Deadlines and filing requirements can change; confirm statutes and county instructions directly.

• Florida Statutes, section 193.011
• Florida Statutes, section 194.301
• Florida Department of Revenue, Value Adjustment Boards

Legal disclaimer: This article provides general information, not legal, tax, or appraisal advice. It does not create an attorney-client relationship. Outcomes depend on the facts, evidence, applicable law, and local procedures. Deadlines and filing requirements can change; confirm them directly with the appropriate Value Adjustment Board.