Property Tax Appeals · Washington
Appeal your property taxes
in Washington.
Washington counties revalue annually and mail official value notices, mostly in spring and summer. You petition the county Board of Equalization by July 1 or within your county’s 30-to-60-day notice window, whichever is later. The board presumes the assessor is correct, so the burden is on you to show "clear, cogent and convincing" evidence of a lower market value as of January 1 — a standard that rewards professionally documented comparable sales over anecdotes.
July 1, or within 30–60 days of when your value notice was mailed, depending on the county (King County allows 60). The deadline is on the notice.
Washington’s evidence standard is stricter than most states on paper, which is exactly why a signed appraisal — rather than a printout of neighborhood listings — is the tool built for the job.
The evidence
Boards act on value,
not frustration.
However Washington labels the process, the case underneath is identical: show what your home was actually worth on the assessment date. A licensed, USPAP-compliant appraisal — comparable sales, documented adjustments, a signed opinion of value — is that showing. Start with the $5 check to see if the numbers are on your side before you spend real money.
- Valued as of your assessment date — not today
- Comparable sales with adjustments and citations
- Signed by a state-licensed WA appraiser
- Phone walkthrough — no stranger in your home
- Delivered in 48–72 hours, rush available
Washington counties
Washington questions
July 1 of the assessment year, or 30–60 days after your value notice was mailed (county-specific — King County gives 60 days), whichever is later.
Comparable sales close to the January 1 assessment date, adjusted for differences — the appraiser’s core work product. The burden of proof is on the homeowner, so documentation quality matters.
We’re not an AVM, a computer model, or a real-estate agent estimate. Every report is prepared under the Uniform Standards of Professional Appraisal Practice (USPAP) and signed by a licensed appraiser in your state — the same qualification required for mortgage appraisals.