How to appeal your property tax assessment

Your tax bill is two numbers multiplied: the assessed value of the property, and the rate. The rate is set by budgets you can't change. The value is the part you can argue — and most counties give you a narrow window each year to do it.

The window is the whole game

Assessments go out once a year, and the appeal deadline is usually a fixed number of days after the notice is mailed — commonly 30 to 90 days, and it is often printed on the notice itself. Miss it and you generally wait a full year, even if the valuation is obviously wrong. Find the date on your notice before you do anything else.

What an assessor actually responds to

Not "my taxes are too high" — that is a complaint about the rate, which the appeal board cannot change. What works is evidence that the value is wrong:

• Recent sales of comparable homes in your area, close in size, age and condition, ideally within the last year.
• An independent appraisal or a recent refinance appraisal, if you have one.
• Errors of fact — wrong square footage, wrong bedroom count, a finished basement counted twice, a demolition or fire the assessor never recorded. These are the strongest appeals because they need no judgement, only correction.
• Photos and repair estimates for damage that existed on the valuation date.

The usual sequence

1. Informal review. Many counties let you talk to the assessor's office first. It is free and sometimes resolves a factual error on the spot.
2. Formal appeal. A written filing, often a form, with your evidence attached and the specific value you believe is correct — not just "lower".
3. Board hearing. Typically a short hearing in front of local officials, sometimes with the assessor present. Bring copies for everyone.
4. Further appeal. If you lose, most states allow an appeal to a state board or court, usually with a deadline and sometimes a filing fee.

What it is worth

If you win, the reduction applies going forward, and in some states a successful appeal can also reach back to prior years. Either way, the saving compounds: a 10% lower assessment is a 10% lower bill every year until the next reassessment.

Common questions

Do I need a lawyer or a contingency service?

Usually no. A factual-error appeal is paperwork. Paid services take a share of the first year's saving, which is worth considering only for a large commercial property or a complicated case.

Does appealing trigger a reassessment that could raise my value?

In most jurisdictions the board can only rule on the value in front of it, not raise it. Check your state's rules if that worries you.

Will appealing affect my mortgage or escrow?

A lower bill usually means a lower escrow requirement, and your servicer adjusts at the next escrow analysis.

Find your county's deadline

This guide is general; the dates that apply to you are the ones your county publishes. Look up your county or see every upcoming deadline.

StacyApproved is an independent reference and is not a government agency. Deadlines change and exceptions apply — always confirm with your county treasurer using the official link on this page. Nothing here is tax, legal or financial advice.