Get the app

For iPhone · iPad coming soon

Lower your property tax bill.

PROppeal’s Evidence Engine analyzes your assessment against licensed comparable sales, applies your state’s rules, and gives you a straight verdict — then builds the board-ready letter you file yourself. No consultant taking a cut of your savings.

Download on the App Store

An honest verdict — we’ll tell you if it’s not worth filing.

Why most homeowners overpay

Assessments are often stale or too high — and the usual fix takes a cut of your savings. PROppeal doesn’t.

30–60% of assessments contain over-valuations, studies suggest.
30–50% of first-year savings is what consultants take on contingency.
$0 taken from your savings With PROppeal you keep 100% — forever.
Licensed sales data Real recorded transactions — not listing-site guesses.

The Evidence Engine

How PROppeal builds your case

Every appeal runs through the same five steps — licensed data in, a board-ready filing out.

  • Step 1 of 5

    Start with licensed sales — not scraped guesses

    The engine pulls comparable sales from licensed property-data providers: real recorded transactions, not listing-site estimates.

  • Step 2 of 5

    Adjust them to your home

    Comps are never apples-to-apples. The engine adjusts each one for size and for how the market has moved since it sold — so you’re comparing your house to your house.

  • Step 3 of 5

    Apply your state’s rules

    Assessment ratios, homestead caps, equity and uniformity standards — every state plays differently. The engine knows the rules where you live and applies them before it ever quotes a number.

  • Step 4 of 5

    Give you an honest verdict

    If the evidence shows you’re over-assessed, you’ll see by how much. If it doesn’t, we tell you that too — and we won’t file an appeal that could backfire and raise your assessment.

  • Step 5 of 5

    Build the filing

    The engine assembles the comparable-sales grid your board expects and a clear, plain-English letter to match — ready to submit before your deadline.

Credibility is the product.

Not every assessment is worth fighting — and we’ll tell you when it isn’t. PROppeal is a knowledgeable guide, not a salesperson and not a lawyer. We show you the comparable sales, explain what they mean, and let the facts make the case.

  • You file it yourself — we’re not your agent or representative.
  • Not tax, legal, or appraisal advice. Comps aren’t a certified appraisal.
  • No savings guarantee — outcomes depend on your county and your evidence.

Questions, answered plainly

Do you file the appeal for me?

No. PROppeal builds the letter and evidence summary; you file it yourself with your county. We’re not your agent or representative and don’t file on your behalf.

Is this tax or legal advice?

No. It’s a tool that organizes comparable sales and your evidence into a letter. It is not tax, legal, or appraisal advice, and the generated comps are not a certified appraisal.

Will I definitely save money?

There’s no guarantee. Outcomes depend on your county and your evidence. If your assessment already looks fair, we’ll say so — that honesty is the point.

Where does the comp data come from?

Licensed property-data providers — the recorded sales our Evidence Engine runs on. We favor recent, nearby sales, filter out distressed ones, and cite independent valuations when they support your case. Verify everything before filing.

What does it cost?

Two steps, both priced up front in the app. First you pay for the analysis — a data-backed read on whether your assessment is worth appealing. Then, if you decide to move ahead, you pay for the board-ready letter. You’re paying for a straight answer and the work behind it, not a percentage of your savings — and if the analysis says you don’t have a strong case, we’ll tell you. That honest answer is part of what you paid for.

What do I need to run it?

An iPhone — PROppeal is built for iPhone first, with iPad support coming soon. Download it from the App Store, add your property, and you can check your case in a few minutes.

See if your bill is too high.

Get a data-backed analysis of your assessment, then the letter to file — with an honest verdict either way.

Download on the App Store

An honest verdict — we’ll tell you if it’s not worth filing.