Frequently Asked Questions

Everything homeowners ask about pricing, eligibility, deadlines, and how a King County property tax appeal works with Appealo.

What types of properties do you work with?

We work with single-family homes and townhouses in King County, WA.

What does the $79 cover?

Everything — the comparable sales analysis, the full evidence package, filing your appeal with the King County Board of Equalization, and hearing representation. No hidden fees.

When do I get charged?

Only if your assessed value is reduced — whether through a board ruling or an assessor settlement. No reduction, no charge.

Do I need to attend a hearing?

No. We prepare all the evidence and represent you at the hearing on your behalf — you don't need to appear. We handle everything from filing to the hearing itself.

Why does Appealo focus on exactly 3 to 5 comparable sales?

When challenging the county, precision and strategic focus beat a volume data dump. More is not better; padding your appeal with too many comps dilutes your argument and gives assessors more opportunities to find flaws in your data.

Instead, Appealo mirrors the exact standards used by the county and appraisal professionals:

  • Industry Practice: Appraisers limit evidence to 3 to 5 core comps to maintain mathematical precision and prevent volume from diluting the case.
  • The King County Grid: The official Real Property Petition worksheet structures the submission around exactly 3 primary comparable sales. We extend this up to 5 only when stronger local data is available.
  • The Volume Warning: Official county guidelines explicitly warn homeowners that submitting “voluminous unorganized data” is not considered useful evidence.

By isolating only the tightest cluster of high-match neighborhood sales, our algorithm builds a concise, bulletproof case where every comparable consistently supports a lower valuation.

How much does it cost to appeal my property taxes in King County?

A flat $79 — and only if your assessed value is reduced, whether through a Board ruling or an assessor settlement. There's no percentage of savings and no charge if the appeal doesn't succeed. Your first property evaluation is free.

Who represents me at the King County Board of Equalization hearing?

Appealo represents you at the hearing — you don't need to appear in person. We prepare and present the comparable-sales evidence on your behalf.

What if my appeal doesn't win?

You owe us nothing. The $79 is only charged if your assessed value is reduced.

What if I'm not sure my home is overassessed?

That's exactly what we figure out first. We run the comparable sales analysis before recommending anything. If the evidence supports a strong case, we'll show you how much you could potentially save. If it doesn't, we tell you — so you don't waste time.

Does Appealo handle condos, commercial properties, or properties outside King County?

No. Appealo currently works with single-family homes and townhouses in King County, WA only — condos, commercial properties, and other counties are out of scope.

What is the deadline to appeal a King County property tax assessment?

The appeal deadline is July 1 of the assessment year, or 60 days after your assessment notice was mailed — whichever is later. Miss that window and you can't appeal until the following year. Sign up for free notice monitoring so you never miss it.

How fast can Appealo file my appeal before the deadline?

As long as the deadline is at least two business days away, Appealo files your appeal within two business days of you signing the Authorization of Agent.

How does the 2-day filing work?

After you check your savings and review your evaluation, signing the Authorization of Agent (AoA) to hire us starts the clock immediately. From there, we package your comparable sales evidence and file your appeal with the county within two business days — fully handled on your behalf.

What counts as evidence for a King County property tax appeal?

The strongest evidence is a small set of comparable sales — 3 to 5 recently sold homes near yours with similar size, condition, and features, adjusted for the county's January 1 valuation date. See what counts as a strong comparable for the specific criteria the Board looks for.

Is your King County home over-assessed?

Free evaluation. No charge unless your assessed value is reduced—then it's just a flat $79.

Get My Free Evaluation