Clark County Property Tax Appeal — Deadline & How to File 2026
July 1 (or 60 days after your value notice, whichever is later)10 days left to file
Yes — Clark County's 2026 property-tax appeal deadline is July 1 (or 60 days after your value notice, whichever is later). 10 days left to file with the County Board of Equalization.
Is my property over-assessed in Clark County?
You're over-assessed when the County's value is higher than what your home would actually sell for — and then you're over-paying every year until you appeal. Washington petitions to the county Board of Equalization are due July 1 of the assessment year, or within 60 days of the Assessor's value-change notice (whichever is later), per RCW §84.40.038.
Honest null: Clark County's assessment roll isn't onboarded into our live check yet, so we can't pull your specific over-assessment here. Compare your assessed value to recent nearby sales on the county assessor portal — if it's higher than what your home would sell for, you're over-assessed and should appeal by the deadline above.
How to appeal your Clark County assessment — and who files it for you
Pull your current assessed value from the Clark County assessor portal.
Find your market value — a recent sale of your home, or comparable nearby sales.
If the County's number is higher, file an appeal with the County Board of Equalization by July 1 (or 60 days after your value notice, whichever is later).
Present your comparables (and any appraisal) at the hearing.
Most owners who win use a contingency property-tax appeal firm — it costs nothing unless they cut your bill, then takes a share of the first-year saving. About 95% of over-assessed owners never appeal, so the saving is usually left on the table.
What is the Clark County appeal deadline this year?
July 1 (or 60 days after your value notice, whichever is later) — 10 days left.
How much does it cost to appeal?
Usually a small filing fee or none; a contingency firm only charges if it wins a reduction.
I got a reassessment notice — what now?
It's the County's new market-value opinion and the start of your appeal window. Check it; appeal by July 1 (or 60 days after your value notice, whichever is later) if it over-states your home's value.
Will appealing raise my taxes?
In most jurisdictions an appeal can only confirm or lower your assessment for that cycle — but confirm the rules with the County Board of Equalization before filing.
Source & verification
against the official Clark County / WA deadline (clark.wa.gov · RCW §84.40.038). These are public deadline facts, not legal or tax advice — confirm your exact date with the County Board of Equalization and consult a professional before filing.