Millions of homeowners just got their new property tax assessments in the mail, and a lot of them are staring at double-digit increases.
In parts of Texas, Florida, and the Northeast, assessed values jumped 15% to 40% in a single cycle.
Counties reassessed after two years of red-hot home prices, and now the bill is landing on your kitchen table.
Here's the part nobody tells you: the number on that notice is often wrong.
County assessors work from mass appraisal models, not a walkthrough of your house.
They don't know your roof leaks, your basement floods, or that you bought the place below market because it needed $30,000 in work.
Errors are common, and most homeowners never challenge them.
The deadline to appeal is usually brutal — often just 30 to 90 days from the notice date.
Miss it and you're stuck paying the higher amount for the full year, sometimes longer.
Open it today and find the appeal window printed somewhere on page one or two.
Pull recent sales of similar homes in your neighborhood — same square footage, same age, same condition.
County appraisal district websites often post this data for free.
If comparable homes sold for less than your assessed value, you've got a case.
Zillow and Redfin estimates aren't strong evidence on their own, but they can point you toward real listings and closed sales.
Next, document what's actually wrong with your property.
Cracked foundation, outdated wiring, a busy road out front, flood history — all of it can lower your value.
A $12,000 foundation quote is powerful proof that your home isn't worth what the county claims.
Most counties let you do this online, by mail, or in person, and there's usually no fee.
Some states require a formal hearing; others offer informal settlement meetings where an appraiser will just knock the number down if your evidence is solid.
Bring three to five strong comps and your repair documentation.
If you'd rather not go it alone, a contingency-based tax protest firm will handle it for a cut of the savings — typically 30% to 50% of year one's reduction.
That's worth it if the numbers are big, but for smaller gaps you can absolutely do it yourself in an afternoon.
Just don't pay anyone an upfront fee; legitimate firms only get paid if you win.
One more thing: check for exemptions you may have missed.
Homestead, veteran, senior, and disability exemptions can shave thousands off your taxable value, and some counties apply them automatically while others don't.
Call your appraisal district and ask what you qualify for.
The system counts on you being too busy or too intimidated to push back.
The ones who appeal often win something — a smaller increase, a corrected error, or a full rollback.
Don't treat an assessment like a final bill.
Treat it like an opening offer from a government office that never set foot in your house.
Final Thoughts
You have a short window and a decent shot, so use it before the deadline quietly closes.