✓ Before you pay another overassessed tax bill

Find out if you're overpaying on property taxes.

Enter your assessed value, this year and last, and anything else you know — a factual error, comparable properties you've found, your own tax rate. StreamNavigator does the arithmetic and tells you if it's worth appealing.

Example finding Worth appealing

Assessed value $300,000 → $360,000

At your own tax rate ≈ $720 more annually

The assessment rose 20% with no renovation, addition, or other change reported — and no comparable property is invented here to make the case. That's your own two figures, compared, at your own rate.

How it works

From address to appeal package.

Most homeowners never check whether their assessment is fair — this makes it a five-minute task.

Enter your assessed values

This year's assessment, and last year's if you have it — the comparison starts from your own two figures.

Pay $79

One flat price per property, secured by Stripe.

We check your own numbers

Year-over-year change, a factual error you flag, or comparable properties you've found — arithmetic on what you actually give us, never an invented comparable.

Get a verdict, not a guess

Worth appealing, likely justified, or nothing to flag — with the reasoning and the dollar impact at your own tax rate.

Get your appeal package

A clear read on your case, plus a practical checklist for what your local process actually needs.

What you get

Everything you need to file a credible appeal.

✓ Whether your assessment rose more than a reported change to the property explains
✓ A factual-error check — the single fastest appeal ground when it applies
✓ Your case against comparable properties you supply, never ones we invent
✓ A real dollar figure computed at your own tax rate — never a category with no number behind it
✓ A practical appeal checklist and what to expect from your local process
✓ An honest "not worth appealing" when that's the truth

Get started

One flat price per property.

Enter your address, pay once, get your appeal package.

One-time

Property Tax Navigator Report

A year-over-year and comparable-property analysis for one property.

$79/property

one-time payment per property

Property address

Current assessed value ($)

Prior year's assessed value ($, if you have it)

Has anything about the property changed since the last assessment?

Does the assessment notice have anything factually wrong about the property?

Your effective tax rate, %

Usually printed on your tax bill as a mill rate or effective rate. This is what turns a percentage change into an actual dollar figure — required if you're entering a prior assessed value or a comparable property, since otherwise there'd be nothing to compute one from. Not needed if you're reporting a factual error alone.

Comparable properties you've found (optional, up to 4)

Pull these from your county assessor's public records site — we compare your assessment against what you found, never one we invent. More comparables make a stronger case, but even one is enough to run this check.

Upload your latest assessment notice (optional)

📎

Click to upload or drag files here

PDF, JPG or PNG · up to 50MB per file, 150MB total

Every finding in your report comes from the figures and answers above, not from this file — the notice is only quoted in the write-up if it helps make your case clearer, never analyzed for a finding of its own.

✓ A real year-over-year comparison, using your own figures
✓ Dollar impact at your own tax rate, never a guessed one
✓ Appeal package formatted for your local assessor
✓ Delivered automatically, usually within a couple of minutes

Get My Report →

🔒 Secured by Stripe

Payments are processed securely by Stripe — StreamNavigator never sees or stores your card details.

FAQ

Questions, answered.

No — you stay in control of the actual filing. We give you the evidence, the estimate, and a package formatted to make filing straightforward.

You'll get an honest answer either way — the report tells you clearly if an appeal isn't likely to be worthwhile.

Property tax assessment and appeal processes vary by state and county, so the checklist stays general unless you tell us your location and we're genuinely confident about that jurisdiction's process. We don't hold a live county-by-county database — the comparison itself runs on your own figures either way.

We don't hold a live MLS or county assessor database, so we never invent a comparable property. The comparison is arithmetic: your assessed value this year against last year, and — if you supply them — comparable properties you found yourself on your county assessor's public records site. Same evidence assessors weigh, sourced by you rather than guessed at by us.

You can't appeal an assessment you never checked.

A $79 check could be worth thousands in the years ahead.

Check My Assessment