Filing a property tax appeal sounds like a no-brainer—challenge your assessment, pay less in taxes. But the truth is, not every appeal is worth your time, and in some cases, filing can actually work against you.
This guide walks you through the specific situations where skipping an appeal makes sense, when filing is likely to pay off, and how to quickly evaluate whether your property is overassessed before you decide.
What Is a Property Tax Appeal?
A property tax appeal is a formal request asking your local government to lower the assessed value it assigned to your property. The assessed value is the dollar amount your county or appraisal district says your home is worth—and it directly determines how much you pay in property taxes each year.
When you file an appeal, you're essentially saying: "I think you valued my property too high, and here's my evidence." If the county agrees, your assessed value drops, and so does your tax bill.
The process varies by location, but it typically involves submitting paperwork to your county assessor's office or appraisal district, gathering evidence like recent sales of similar homes, and sometimes attending a hearing. Some homeowners handle this themselves, while others work with professionals who manage the entire process on their behalf.
How Much Are You Over Paying?
When You Should Not Appeal Your Property Taxes
Not every assessment is worth challenging. You may want to skip filing if your assessed value falls within 10% of your home's actual market value, you don't have comparable sales data showing lower values, or the appeal deadline has already passed.
Appeals also tend to be less productive when your property record card contains no errors or when the potential tax savings are too small to justify the effort.
Here's a closer look at each scenario.
1. Your Property Recently Sold at or Near the Assessed Value
If you bought your home recently and the sale price closely matches what the county assessed, you're unlikely to win an appeal. Assessors treat arm's-length transactions—sales between unrelated buyers and sellers at market conditions—as strong evidence of true market value.
Say you purchased your home for $340,000 and the county assessed it at $345,000. That $5,000 gap is minimal, and your own purchase essentially validates the county's number.
Without additional evidence showing the assessment is wrong, an appeal probably won't go anywhere.
2. Your Assessment Aligns With Comparable Properties Nearby
Comparable properties, often called "comps," are homes similar to yours in size, age, condition, and location that sold recently. If your neighbors' homes are assessed at similar per-square-foot values, your assessment is likely accurate.
Before filing, look at what similar homes in your area sold for over the past 6 to 12 months. If those sale prices support your assessed value—or even exceed it—you don't have much of a case.
3. You Live in a State Where Your Assessment Could Increase
In most states, filing an appeal can only result in your assessed value staying the same or going down. But a few states work differently.
In Washington and Georgia, the appeals process can trigger a full review of your property. If the assessor determines your home was actually undervalued, your assessed value and your tax bill could go up instead of down.
Tip: Before filing in Washington or Georgia, compare your assessed value to recent comparable sales. If your property appears underassessed relative to the market, skipping the appeal may be the safer choice.
4. The Potential Savings Do Not Justify the Self-Appeal Effort
Even if your property is slightly overassessed, the reduction you'd receive might not be worth the time, especially if you’re appealing on your own without a firm.
Consider how much you'd actually save before moving forward. Here's a quick example of how to estimate potential savings:
Factor | Example |
|---|---|
Current assessed value | $400,000 |
Estimated fair market value | $385,000 |
Potential reduction | $15,000 |
Local tax rate | 1.2% |
Annual savings | $180 |
If your potential savings are modest and you'd have to take time off work to attend a hearing, the math might not work in your favor.
That said, services like Ownwell handle the entire process on a contingency basis; you only pay if you save, which can make smaller reductions worthwhile since there's no upfront cost or time commitment on your end.
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5. You Missed the Appeal Deadline
Property tax appeal deadlines are strict. Once they pass, you typically lose your right to challenge that year's assessment.
Each state and county sets its own window, often ranging from 30 to 90 days after you receive your assessment notice.
If you've already missed the deadline, your best option is to mark your calendar for next year and file promptly when your new assessment arrives.
When a Property Tax Appeal Is Worth Filing
While there are clear reasons to skip an appeal, there are equally clear situations where filing makes sense.
1. Your Assessed Value Exceeds Recent Comparable Sales
If similar homes in your neighborhood sold for less than your assessed value, you have solid evidence for a reduction. This is the most common and most successful basis for property tax appeals.
Look for 3 to 5 comparable sales from the past year. Focus on homes with similar square footage, lot size, age, and condition. If those homes sold for 10% or more below your assessed value, an appeal is likely worth pursuing.
2. You Have a Strong Equity Argument
The equity argument, often overlooked, is based on the idea that your home is assessed at a higher percentage of its market value than similar properties elsewhere in the county.
This differs from the comparable sales argument, as it's not about what a neighbor's house sold for, but rather whether you are being taxed at a fair rate relative to other homeowners.
For example, if your home is assessed at 95% of its market value, but similar properties across town are assessed at 80% of their market value, you are being taxed unfairly. Even if your assessment is technically "correct." That disparity is a winnable argument.
2. Your Property Record Contains Errors or Outdated Information
Assessors rely on property record cards that list details like square footage, bedroom count, lot size, and improvements. Errors on these records can inflate your assessed value, and they're often straightforward to correct.
Common mistakes include:
Incorrect square footage: The county lists more living space than you actually have
Extra bedrooms or bathrooms: Features that don't exist appear in the record
Unremoved improvements: A demolished garage or shed still shows on the file
Wrong lot size: Your property is recorded as larger than it actually is
4. Your Assessment Jumped Significantly From Last Year
A large year-over-year increase in your assessed value often signals an error or aggressive valuation. While property values do rise over time, dramatic jumps—especially those that outpace your local market—are worth questioning.
If your assessment increased by 15% or more while comparable homes stayed relatively flat, you likely have grounds for an appeal.
Your Neighbors Might Be Paying Less...
How to Tell if Your Property Is Overassessed
Before deciding whether to appeal, take a few minutes to evaluate your situation.
Review your property record card: Look for factual errors in square footage, room count, or lot size. You can usually find this document on your county assessor's website.
Compare recent sales in your neighborhood: Identify 3 to 5 homes similar to yours that sold in the past 6 to 12 months.
Calculate your assessed value per square foot: Divide your assessed value by your home's square footage, then compare this figure to recent comparable sales.
Look for disparities with comparable properties: Analyze historical and current appraisals of properties near and similar to your home to reveal incongruity in property tax assessments.
If your assessed value per square foot is significantly higher than what similar homes sold for, you may be overassessed.
Risks of Filing a Property Tax Appeal
Filing an appeal is generally low-risk, but there are a few scenarios where it could backfire or waste your time.
Your Assessed Value Could Go Up After a Failed Appeal
In states like Georgia and Washington, the appeals process opens your property to a full reassessment. If the county discovers your home was undervalued—perhaps due to unreported renovations or market changes—your assessed value could increase.
This risk doesn't exist in most states, but it's worth checking your local rules before filing.
You Could Draw Attention to Unreported Improvements
When you file an appeal, the assessor may review your property more closely. If you've made significant improvements—like adding a deck, finishing a basement, or building an addition—that weren't previously on record, the county might update your file.
This doesn't mean you shouldn't appeal, but it's something to consider if your property has changed substantially since the last assessment.
A Weak Case Wastes Time Without Results
Appeals without solid evidence rarely succeed. If you can't demonstrate that your assessed value exceeds market value—through comparable sales, property errors, or other documentation—you're unlikely to win. Filing a weak case costs you time with no return.
Property Tax Appeal Deadlines You Need to Know
Missing your appeal deadline means waiting another year to challenge your assessment.
When Are Texas Property Taxes Due?
Texas property taxes are due by January 31 of the year following the tax year. This is separate from the protest deadline, which comes earlier in the year.
How to Appeal Property Taxes in Texas
In Texas, you can file a property tax protest by May 15 or 30 days after your appraisal notice is mailed, whichever is later. The process involves:
Filing a notice of protest with your county appraisal district
Attending an informal hearing with an appraiser
If unresolved, proceed to a formal hearing before the Appraisal Review Board or Board of Assessment
Texas allows protests every year, and many homeowners see consistent savings by filing annually.
Key Deadlines in Other States
Appeal windows vary significantly by state. Here's a quick reference:
State | Typical Appeal Window |
|---|---|
California | Within 60 days of the assessment notice |
Florida | 25 days after the TRIM notice |
Georgia | 45 days after the assessment notice |
Illinois | 30 days after publication |
New York | Varies by jurisdiction (often March–May) |
Texas | May 15 or 30 days after the assessment notice is mailed |
Washington | Within 60 days of the assessment notice |
Always verify current deadlines with your local assessor and county, as dates can shift based on when notices are mailed.
How to Decide if a Property Tax Appeal Makes Sense for You
Still unsure whether to file? Run through this quick checklist:
Is your assessed value higher than recent comparable sales?
Does your property record contain errors?
Are you in a state where appeals carry the risk of increased assessment?
Do you have time to gather evidence and attend hearings—or would you prefer expert help?
If you'd rather not navigate the process yourself, Ownwell's local tax experts handle everything—from building evidence to attending hearings—on a contingency basis. You only pay if you save.
FAQs About Property Tax Appeals
Can you withdraw a property tax appeal after filing?
Yes, in most jurisdictions, you can withdraw your appeal before the hearing. However, rules and deadlines for withdrawal vary by county, so check with your local assessor's office to confirm the process.
What happens if you lose a property tax appeal?
In most states, your assessed value simply stays the same if your appeal is unsuccessful, but many allow you to file a formal appeal or second hearing. However, in Georgia and Washington, a failed informal or formal appeal can result in an increased assessment if the county determines your property was undervalued.
How much does it cost to hire someone to appeal your property taxes?
Costs vary depending on the service model. Some firms charge flat fees regardless of outcome, while others—like Ownwell—use a contingency model where you only pay 25% or 25% of your actual tax bill savings if the appeal succeeds.
Can you appeal your property taxes every year?
Yes, in many states, property owners can file an appeal each year after receiving a new assessment notice. Filing annually helps maintain a lower assessed value and can compound savings over time, especially in markets where values are rising.
What is the difference between a property tax appeal and a property tax exemption?
An appeal challenges your property's assessed value, arguing that the county overvalued your home. An exemption, like a homestead or senior exemption, reduces your taxable value based on eligibility criteria. Both can lower your tax bill, but they work through different mechanisms and can often be combined.
