You're leaving money on the table every year.
1 in 3 U.S. homeowners overpays property taxes, not because they owe it, but because they never challenged their assessment. Enter your address and in about a minute you'll see your verdict, your dollar number, and your county's filing deadline — free, sources included.
National Taxpayers Union Foundation
succeed nationally
when an appeal wins
by our database
Most people haven't. Here's the 20-second version.
Your county estimates your home's value — often with a mass computer model, sometimes years out of date. When that guess is too high, you overpay. Every year.
Every county has an official process for homeowners to correct the number — usually a simple form, usually free to file. Big commercial landlords do it every single year. Homeowners just rarely know it exists.
Appeal firms typically take 25–50% of your first-year savings. Grove Hopper checks your home for free, shows its sources, and builds the whole case for a flat $50 only if the numbers say it's worth it.
From your address to a winning appeal
We've distilled a complex process that normally costs $300 to $1,500 in attorney fees down to three simple steps.
Enter your address
We instantly pull your current assessed value, comparable sales, and county appeal history from public records.
Free · 60 secondsGet your free analysis
See your appeal likelihood score, estimated annual savings, and a comparison of your assessment vs. what your neighbors are paying for similar homes.
Free · InstantWe build it — you sign & send
If you have a case, Grove Hopper builds the whole thing: your county's form filled out, a ready-to-sign appeal letter, the evidence, and deadline reminders. Your part is minutes, not weekends.
Optional · $50 one-timeFree analysis, then everything
you need to win.
Instant Property Report
No cost · No account
- Your current assessed value vs. estimated market value
- Appeal likelihood score (Low / Medium / High)
- Estimated annual savings range
- Comparable neighborhood assessments
- Your county's appeal deadline
Everything to File and Win
Unlock if your analysis shows a case worth pursuing
- Everything in the free analysis
- Full comparable sales evidence package (court-ready)
- County-specific appeal forms, pre-filled where possible
- Step-by-step filing walkthrough with exact links and deadlines
- Hearing prep guide and talking points
- One-page checklist for any manual steps your county still requires
They thought their taxes were fair too.
Until they checked.
“A few years ago I paid a firm to file my appeal and the report I got back was basically a template with my address in it. Grove Hopper's analysis was a lot more specific to my property and to how my county actually handles appeals. It felt like I was building a case, not just turning in paperwork.”
“I tell every listing client to run the free analysis whether they're planning an appeal or not. Even if they've missed their county window, knowing the home is over-assessed gives us a real number to bring up at the negotiating table. Lower expected taxes can translate to a better price for the seller.”
“I figured an appeal would be a slog. The walkthrough laid out exactly what to do step by step. For the savings I'm looking at, the time it took was easily worth it.”
Everything you're wondering about
Find out if you're one of the millions
who should appeal.
It's free. It's instant. And if there's money on the table, we'll show you exactly how to claim it.