The best free property tax appeal tools in 2026
If you came here looking for ValueAppeal, TaxProper, or TurboAppeal — they've shut down or moved on. Here's what actually works now, and how to check your own home for free.
Enter your address and Grove Hopper analyzes your assessment against comparable sales, tests whether you're assessed higher than similar homes nearby, and checks your record for errors — then shows your estimated savings and your county's appeal deadline, with sources cited. No account, no credit card.
Check my assessment free →Tools that have shut down or moved on
Billed as "TurboTax for property taxes." A $99 DIY tool that pulled comps and built an appeal packet for you.
Shut down. valueappeal.com no longer resolves.
A Y Combinator–backed startup that automated appeals and filed on your behalf for a fee.
Pivoted away from consumer appeals; taxproper.com now redirects to an unrelated fintech.
An early automated-appeal platform, later rolled into a larger property-tax company.
No longer available to homeowners as a standalone tool.
What to look for in a property tax appeal tool
- It checks more than market value. The strongest appeals often rest on uniformity (you're assessed at a higher share of value than similar homes) or record errors (wrong square footage, bed/bath count) — not just comparable sales. A good tool checks all three.
- It shows its sources. Assessment boards want evidence. Estimates without cited records don't help you file.
- It respects the deadline. Appeal windows are short and set at the county level. See our live county deadline table.
- It doesn't take a cut of your savings. Many services charge a percentage of what you save every year. A flat price (or free) keeps the savings yours.
Prefer to do it yourself?
Our free county-by-county appeal guides walk through the forms, evidence, and deadlines for your specific county — no tool required. And the free check tells you whether it's worth your time before you start.