The Assessment Went Up 40%. Here's How to Fight It.

Your county just mailed you a property tax assessment that looks like a ransom note. Values jumped double digits in many markets over the past three years, and assessors are finally catching up. But here's what most homeowners never learn: the number on that notice is an opening bid, not a final verdict. Roughly 30 to 60 percent of homeowners who formally appeal their assessment win some kind of reduction, according to county data across several states. Yet only a tiny fraction ever bother to try. Most people open the envelope, curse, and pay. That's a costly mistake. On a $400,000 home, a 15 percent overassessment can mean $900 or more in extra taxes every year. Over a decade, you've handed your county a used car. **Why Your Number Jumped** Assessors typically work off sales data from a window that lags the current market. In boom years, that means your 2021 purchase price might now define your 2025 tax bill. Some counties also use mass appraisal models that never set foot inside your house. They assume you have the same kitchen, same roof, same finished basement as your neighbor. If you don't, you're subsidizing the model's guesswork. **The Clock Is Your Enemy** Every jurisdiction sets a hard appeal deadline, often 30 to 90 days from the notice date. Miss it and you're locked in until next year. Find your deadline today, not next month. It's usually printed in small type on the back of the notice or buried on your county assessor's website. **Build a Case, Not a Complaint** "Everybody's taxes are too high" gets you nothing. You need evidence. Pull recent sales of comparable homes in your neighborhood, ideally three to five that sold within the past year. Your county assessor's office usually publishes these records online for free. Focus on homes similar in size, age, and lot, and make sure they sold for less than your assessed value. Then document your home's flaws. Cracks in the foundation, a dated kitchen, a noisy road out back, a weird lot shape. Photograph everything. If you got a private appraisal for a refinance recently, that's gold. Bring it. **File the Paperwork** Most counties accept appeals online now. Some offer an informal review first, where you sit down with an assessor and make your case. Take it. It's faster and less intimidating than a formal hearing. If that fails, you can usually request a formal appeal before a local board. Come prepared with three copies of everything: your evidence, your comps, and a one-page summary stating your estimated fair value and why. Keep it calm and factual. Boards respond to data, not frustration. **The Refinance Angle** If you're refinancing this year, your lender's appraisal can double as appeal ammunition. Ask your appraiser to note any condition issues. A $500 appraisal that shaves $1,200 off your annual tax bill pays for itself in five months. **Watch for Exemptions** While you're at it, check whether you qualify for homestead, veteran, senior, or disability exemptions. Many homeowners miss these entirely. In some states, a homestead exemption alone can knock thousands off your taxable value. **Our Take** Counties count on inertia. They bank on you being too busy, too confused, or too intimidated to push back. But the appeal process is free in most places, and the odds are better than most people assume. Spend one evening gathering comps and one afternoon filing paperwork. Your future self, staring at a smaller tax bill, will thank you.