Property Tax Over-Assessment Estimator
Enter your address to see whether your assessed value may exceed current market data — and a conservative estimate of what an appeal could recover. This is an estimate, not an appraisal or a tax determination.
How this estimate works
We look up your county's most recent assessed value and a current automated market-value estimate (AVM), then convert the assessed value to an implied market value using your state's statutory assessment ratio. When the implied value sits clearly above the market estimate's range, we flag a possible over-assessment and estimate a conservative annual-savings range. We suppress the estimate entirely when the assessment is stale, the market range is too wide, or your state has no usable statutory ratio.
Property tax appeal methods compared
| Method | Cost | Typical effort |
|---|---|---|
| File the appeal yourself | $0 | 2–4 hours gathering evidence |
| Property-tax consultant | Often 25–40% of the first-year savings | Minimal |
| Attorney | Varies (sometimes a flat fee) | Minimal |
Frequently asked questions
How do I know if my home is over-assessed?
Compare your county's assessed value (converted to an implied market value using your state's assessment ratio) against a current market-value estimate. If the implied value sits clearly above today's market data, your assessment may be high — though only your assessor's review or a formal appeal can confirm it.
Is this an appraisal?
No. The market value here is an automated estimate (AVM) from public property data — not a certified appraisal, and not used for any lending decision. Assessors and appeal boards rely on their own evidence; treat this as a starting point, not a determination.
Why won't it show a number for my home?
We deliberately suppress an estimate when the data can't support a reliable figure — for example when the latest assessment is more than two years old, the market estimate's confidence range is too wide, or your state has no single statutory assessment ratio. A missing estimate is better than a misleading one.
Does an appeal always lower my taxes?
No. Many appeals are denied or result in a smaller reduction than estimated, and outcomes vary by county and year. The range shown is an estimate of what a successful appeal could recover, not a promise.
Ready to appeal? See our property tax appeal guides by state →
This is an estimate only — not an appraisal. Assessed values and market estimates may not reflect recent sales or property condition. Verify your assessed value with your county assessor before filing an appeal. Not legal or financial advice.