FREE · NO SIGNUP TO VIEW · KING COUNTY
Enter your King County address. We compare your assessed value to recent comparable sales — straight from county data — and tell you in 30 seconds whether you have a case. If you do, we email you a print-and-mail appeal packet with the BOE petition pre-filled.
30 seconds · No signup to view your report · No credit card, ever
Want to see the packet first? Preview a sample (PDF) →
King County re-assesses on January 1. If values dropped after, your bill stays high until you appeal.
Mass-appraisal misses neighborhood-specific factors — view, slope, traffic, condition. Roughly half of appeals win.
The Board of Equalization takes a one-page petition + a comparable sales analysis. We give you the analysis. You file it.
WHY US, NOT A NATIONAL APPEAL SERVICE
Paid services like Ownwell, AppealDesk, and PADS cover thousands of counties across 30+ states with the same template. We do one county — King County — and we do it deeply.
National services apply a generic model across every state. Our comp engine, area codes, ZIP-level $/sqft rates, view premiums, and HPI adjustments are all calibrated specifically to King County — the same way the County Assessor and Board of Equalization look at properties here.
Reports pull live from the King County Assessor's eReal Property, eSales, and ArcGIS parcel layers — the exact sources the Board of Equalization references at hearing. Your evidence comes from the same well as theirs.
We built this after appealing our own King County assessments and finding that national services either weren't accurate enough for BOE evidence standards, or took a 25–50% cut of our savings. Every feature exists because we needed it ourselves.
Paid services typically take 25–50% of your first-year reduction (Ownwell, TaxProper), or charge a flat $39–$59 fee for the same appeal packet (PADS, KingCountyTaxAppeal). We take nothing. You get the full evidence report, a pre-filled BOE petition, cover letter, and hearing prep notes — sign the packet and drop it in Certified Mail (~10 minutes, ~$5 postage). You keep every dollar of the reduction — this year and every year forward.
| National appeal services | This site | |
|---|---|---|
| Coverage | 1,000s of counties, 30+ states | ✓ King County, deeply |
| Data source | Generic; varies by region | ✓ King County Assessor (official) |
| Cost | $39–$59 flat (PADS, KingCountyTaxAppeal), or 25–50% of savings (Ownwell, TaxProper) | ✓ Free |
| Who files | They file (you sign an authorization) | ✓ You file (sign packet, Certified Mail, ~10 min) |
| Signup | Required | ✓ None |
We look up your parcel in the King County Assessor system in 1 second.
Assessed value history, sale records, prior appeals, and arms-length comparable sales — all from county sources.
Decide if you have a case. If yes, drop your email and we'll send a print-ready packet — sign it, mail it with Certified Mail, done.
Two pieces. Both free. The online report is instant; the appeal packet is emailed to you when you ask for it.
No email, no signup. View in 30 seconds.
One bundled PDF with everything the Board of Equalization wants to see.
Print the packet, sign two pages, and send via Certified Mail ($5 at any USPS counter). Step-by-step mail-filing guide included.
We pull live from the King County Assessor's eReal Property database, eSales comp tool, and ArcGIS parcel layers. No MLS scraping, no third-party APIs, no signups. Owner/buyer/seller names are stripped per RCW 42.56.070(9).
See if I'm overpayingRead more in our King County property tax appeal guide, step-by-step how to appeal, or how much you can actually save.
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