Property taxes are calculated by multiplying your home’s assessed value by your local tax rate. Most homeowners assume the bill is fixed, but it is not. You can challenge the assessment, claim exemptions you may not know you qualify for, or simply ask your local assessor to review their numbers. Homeowners who appeal their assessments win roughly 30–40% of the time, according to the National Taxpayers Union.
1. Review Your Property Assessment for Errors
Your assessment notice lists details your assessor used to value your home: square footage, number of bedrooms and bathrooms, lot size, and features like a garage or finished basement. Errors are common. If the record shows 2,400 square feet and your home is 2,000, or it lists a second bathroom that doesn’t exist, that error inflates your assessed value — and your tax bill.
Request your property record card from your assessor’s office. Check every line against your home’s actual specifications. Any discrepancy is grounds for a correction, often without a formal appeal.
2. File a Formal Appeal
If your home is accurately described but still over-assessed, file an appeal. The process varies by jurisdiction but typically involves:
- Requesting your assessment notice and property record card
- Pulling recent sale prices of comparable homes (comps) in your neighborhood from Zillow, Redfin, or your county’s public records
- Filing an appeal form with your local assessor or Board of Review before the deadline (usually 30–90 days after assessment notices are mailed)
- Presenting your comps at a hearing
You do not need an attorney. The process is designed for homeowners to navigate on their own. A successful appeal typically reduces your assessed value to match what comparable homes actually sold for.
3. Claim Every Exemption You Qualify For
Most states offer exemptions that reduce your assessed value or taxable value. Many homeowners miss them simply because they do not know they exist or did not file the paperwork. Common exemptions include:
- Homestead exemption — Available in most states for primary residences. Reduces assessed value by a flat amount or percentage. You must apply; it is not automatic when you buy a home.
- Senior citizen exemption — Many states and counties offer reduced rates or frozen assessments for homeowners over 65. Income limits apply in some jurisdictions.
- Veteran exemption — Partial or full property tax exemptions for veterans, especially those with service-connected disabilities. Some states exempt disabled veterans entirely.
- Disability exemption — For homeowners with qualifying disabilities. Requirements vary by state.
- Agricultural exemption — If you use any portion of your land for farming, even a small hobby farm, you may qualify for a lower agricultural assessment rate.
Contact your county assessor or treasurer’s office to find out which exemptions are available and whether you qualify. Filing deadlines are typically annual.
4. Check Your Neighbors’ Assessments
Property assessment records are public. Look up assessed values for comparable homes on your block. If neighbors with similar homes are assessed at lower values, that inconsistency strengthens your appeal. Most counties publish assessment rolls online through the county recorder or assessor’s website.
5. Avoid Improvements That Trigger Reassessment
Permitted construction — adding a room, finishing a basement, building a garage — typically triggers a reassessment of the added value. In states where assessments are capped until ownership changes (like California’s Proposition 13), unpermitted work can cause problems if discovered.
This does not mean avoid improvements, but understand that they will likely increase your tax bill. Cosmetic improvements that don’t require permits generally don’t trigger reassessment.
6. Look Into Tax Deferral Programs
Some states offer property tax deferral programs for seniors or low-income homeowners, allowing taxes to accrue as a lien on the property and be paid when the home is sold. This does not reduce the total owed but eliminates the cash flow burden during years when it is most difficult.
7. Walk the Assessment With the Assessor
In some jurisdictions, you can request an informal review with the assessor before filing a formal appeal. Bring your comps, point out the discrepancies, and ask them to explain how they arrived at your value. Many assessors will adjust errors informally rather than go through a formal hearing.
Bottom Line
The single highest-return action for most homeowners is reviewing their property record card for factual errors and filing a formal appeal if the assessed value exceeds what nearby comparable homes actually sold for. Combine that with claiming every exemption you qualify for, and you can permanently reduce your tax bill — not just for one year.