Your property assessment is the value your county has placed on your home, and the number behind your tax bill. Assessments are estimates, and estimates routinely miss.
Your property assessment is the dollar value your county has placed on your home for tax purposes. Multiplied by your local tax rate, it is where your annual tax bill comes from. If the number is too high, you are overpaying every year it stays on the record.
The question most homeowners do not know how to answer is whether their own assessment is too high. Value notices look official. The number is printed as though it were a fact. But assessments are estimates, and estimates come in wrong at a rate that keeps property tax appeals in business.
An assessment is a best guess, not a fact
Counties do not appraise each home the way a bank does when you refinance. They run a statistical model over thousands of properties at once, using whatever the county has on file for each one. The process is efficient, and it is reasonably accurate on the average home in the average neighborhood. It is less accurate on any home that is not average.
That trade-off is baked into the system. The model assumes your home is typical. When it is not, the number it produces can be meaningfully off from what a buyer would actually pay.
Where these numbers drift
A handful of patterns account for most over-assessments. Condition data on file is often years out of date. Record details like square footage can be carried forward from decades-old files, with errors. Homes near arterials, commercial edges, or transit corridors often get over-valued because the model cannot see the penalty a buyer would apply. Homes with unusual layouts get averaged up toward the neighborhood norm.
A homeowner looking at their own notice cannot easily tell which of these, if any, apply to them. The county does not show its work. The notice is one number.
What FairAppeal does with it
Fair Appeal pulls the full record on your property and compares it against actual sales data for your neighborhood, over the window your county cares about. If your value is out of range, there is a case to challenge it. If it is in range, we say so.
Either way, the review is free. The fee, when it applies, is a percentage of first-year tax savings, and only when an appeal actually reduces your tax. FairAppeal also runs the same check every year going forward, so a fair value this cycle does not quietly turn into an unfair value next cycle.
The bottom line
An assessment is an estimate, produced at scale, and estimates at scale miss a meaningful share of the time. The only reliable way to know whether yours is one of the misses is to compare it against actual market data. That is what FairAppeal does for free.