Your property tax bill is based on your home's assessed value — and assessments are frequently too high, because they're produced in bulk by formulas that don't know your house. Appealing is usually free or cheap, and a successful appeal lowers your bill not just once but for years. A meaningful share of homeowners who appeal win at least a partial reduction, yet most never try.
Understand how the bill is built
Your tax is roughly your assessed value multiplied by the local tax rate (sometimes called a millage rate). You generally can't fight the rate — that's set by your city, county, and school district — but you can challenge the assessed value if it's wrong or out of line with comparable homes. That's where the opportunity is.
Step 1: Read your assessment for errors
Request your property record card from the assessor (often available online) and check the basics:
- Square footage and lot size
- Number of bedrooms and bathrooms
- Finished vs. unfinished space
- Condition, age, and any features it lists that you don't actually have
Errors are common, and a single wrong number — an extra bathroom, 300 phantom square feet — can inflate your value enough to justify an appeal on its own.
Step 2: Find comparable sales
The strongest appeal shows recent sales of similar, nearby homes — same neighborhood, similar size, age, and condition — that sold for less than your assessed value. Three to five solid comparables make a far more persuasive case than simply arguing your taxes "feel" too high.
Your assessor's site, public records, or a real-estate agent can help you pull comps. Adjust for obvious differences (an extra garage, a finished basement) so you're comparing fairly.
Step 3: File before the deadline
Most jurisdictions give you a short window each year — often 30 to 90 days after assessments are mailed — to file an appeal. Submit your evidence in writing, request a hearing if one is offered, and present your case calmly and factually. Many appeals are resolved on the paperwork alone. If you lose at the first level, there's usually a higher board you can escalate to.
Step 4: Claim every exemption
Separate from appeals, make sure you're getting every break you qualify for — these reduce your taxable value directly:
- Homestead exemption for your primary residence (available in most states, and sometimes you have to apply).
- Senior, veteran, and disability exemptions or freezes.
- Exemptions for certain home improvements like solar or accessibility upgrades.
These are easy to miss and easy money once filed.
The bottom line
Pull your property record, check it for errors, gather a handful of lower comparable sales, and file before the deadline — then confirm you're claiming every exemption. An afternoon of work can lower a bill you'll otherwise pay every year, and you can repeat the appeal whenever your assessment jumps.
Trim your other home costs too
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