Your Free Property Tax Appeal Report

Enter your King County address. We pull your assessed value history, sale records, prior appeals, and 3–5 comparable sales — straight from the county's own data.

30 seconds · No email · No credit card

⚠ King County's appeal deadline is July 1 (or 60 days after your value notice). Pull your report early to leave time to file.

Why most King County homes are over-assessed

Assessments lag the market

King County re-assesses on January 1. If values dropped after, your bill stays high until you appeal.

The Assessor uses bulk models

Mass-appraisal misses neighborhood-specific factors — view, slope, traffic, condition. Roughly half of appeals win.

Filing is a single form

The Board of Equalization takes a one-page petition + a comparable sales analysis. We give you the analysis. You file it.

How it works

1. Enter your address
We look up your parcel in the King County Assessor system in 1 second.
2. We pull official data
Assessed value history, sale records, prior appeals, and arms-length comparable sales — all from county sources.
3. Read your report
Decide if you have a case. If yes, file in 5 minutes through the county's eAppeals portal.

What's inside your report

✓Current assessment + 30 years of history (with year-over-year jumps highlighted)
✓Sale history of your property
✓Any prior appeals on file (and what they settled at)
✓3–5 comparable arms-length sales nearby, scored by similarity
✓Direct links to King County's eAppeals filing portal

Built on public King County data — nothing else

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).

Get my free report