Appeal Your WA Property Tax. Save $800–$2,000 a Year.
Your filing window: July 1, or 60 days from the date your county mailed your Change of Value notice. Whichever is later. (RCW 84.40.038)
That's the typical savings when a Washington homeowner appeals successfully. The tool cites your county's RCWs, calculates your filing deadline, and builds the petition. Most people finish in under an hour.
Preview free · $49 for full appeal package · All 39 WA counties · No subscription
~25% of appealed property values get some kind of reduction in King County (source: King County BOE). Built by Washington homeowners who've filed their own appeal.
516 Third Avenue, Room 1222, Seattle, WA 98104
Parcel Number: 1234567890
Current Assessed Value: $875,000 · Requested Value: $745,000
Your generated petition (example for King County)
Is your property over-assessed?
Enter your assessed value and what your home would realistically sell for today. We'll tell you if you look over-assessed and when your filing window closes — no $/sqft math required.
Which Washington county is your property in?
What is the county's assessed value?
What do you believe the true value is?
Comparable sales (optional)
Ideal comps: arms-length sales within 12 months, within 1 mile, within 20% of your square footage. Pull them from your county parcel viewer, Zillow, or Redfin.
Have you received your Change of Value notice?
Notice date (drives your filing deadline)
Review, download, and file
Three tiers, built for Washington
Start free. Upgrade when you're ready to file.
Free Check
- Assessed-vs-market over-assessment estimate
- Filing deadline calculator
- RCW 84.40.038 deadline rule explained
- Preview of petition letter
Appeal Package
- Full RCW-cited petition letter
- County-specific filing instructions
- DOR REV 64 0075 pre-filled
- Evidence checklist (comps, photos, permits)
- Downloadable PDF
- Email support
Backed by our 60-day money-back guarantee. Reply to your receipt. That's the whole process.
What you actually get
A petition your county BOE has to hear
Every property-tax package delivers a county-specific BOE petition, a comparable-sales evidence packet, a hearing-prep brief, and an assessor-complaint path. Here's a King County appeal.
To the Board of Equalization,
Pursuant to RCW 84.40.030 (true and fair value) and the appeal rights codified at RCW 84.40.038 and RCW 84.48.010, I petition for review of the 2026 assessed value of the above parcel, currently valued at $1,284,000.
The comparable-sales analysis, the square-footage discrepancy, the supported valuation range, and the hearing-ready evidence are set out below…
Evidence checklist
What to attach for a property tax appeal
- Current-year assessment notice
- 3× comparable-sales report (Exhibit A)
- Assessor's property record card
- Recent appraisal (if available)
- Photos documenting condition / defects
- Prior-year assessed values (3-year history)
Escalation path
If the BOE denies the petition
- Day 30Request formal hearing (in-person)
- Day 60Appeal to WA Board of Tax Appeals
- Day 90Informal assessor meeting + revision
- Next yrRefile with updated comps
Names, addresses, parcel numbers, and valuations are illustrative. Your petition uses your actual parcel details and your county's specific filing rules and deadlines.
Common questions
Is a property tax appeal the right move, and is this legal advice?
If your assessment is meaningfully above recent comparable sales in your neighborhood, an appeal is usually worth the filing time. Washington County Boards of Equalization (BOEs) hear homeowner appeals directly. No attorney required. That said, this tool is a self-help document generator, not legal advice. For commercial property, condemnation, or high-value disputes, talk to a Washington-licensed attorney or property tax consultant.
When is the deadline to appeal my Washington property taxes?
Under RCW 84.40.038, the later of July 1 of the assessment year OR 60 days from the date the county mailed your Change of Value notice. Most homeowners have until July 1. A "good cause" exception exists for limited circumstances like documented illness or military deployment.
How much can I realistically save?
Depends on how over-assessed you are. A 10% reduction on a $750,000 assessment at a typical 1.0% effective rate saves about $750/year, and since assessments carry forward, that compounds across multiple years until the next reassessment cycle. Appeals backed by 3+ solid comparable sales succeed at materially higher rates than comps-free petitions.
Do I need an attorney or a consultant?
No. County Boards of Equalization hear appeals from homeowners directly, and hearings are informal. The BOE is required to be independent of the assessor. What you need is a well-documented petition and a few comparable sales, which is exactly what this tool generates.
What happens after I purchase?
Stripe delivers the appeal package to the email on your receipt within minutes. You get the RCW-cited petition as a PDF, county-specific filing instructions (which form, where to send it, any fees), an evidence checklist, and a BOE hearing prep script. No account, no login, no subscription.
How is this different from Ownwell or AppealDesk?
Ownwell charges a contingency fee (25–30% of first-year savings) and is built for national scale, not Washington specifics. AppealDesk is a generic $49 template. We're $49 flat, Washington-only, and the petition cites the actual RCWs and WACs the BOE expects to see.
What happens if the BOE denies my appeal?
You have 30 days from the BOE's written decision to appeal to the Washington State Board of Tax Appeals (BTA) under RCW 84.08.130. You can choose the Informal track (final, no further appeal) or the Formal track (on the record, appealable to Superior Court). The package includes the BTA appeal template as an escalation path.
Will appealing trigger a higher reassessment?
The BOE is required to review the petition on its merits. The assessor cannot retaliate with a higher assessment in response to a good-faith appeal. In practice, BOEs that find evidence of under-assessment can raise the value, but that's rare and only happens when the petitioner's own evidence clearly shows higher comparable values, which is generally not how appeals are structured.
What if I already missed the deadline?
You may still qualify for a "good cause" late petition under RCW 84.40.038(1)(b). Documented illness, military deployment, death in the family, or a late-mailed Change of Value notice are the usual grounds. The package includes a late-petition request template with the "good cause" showing. For next assessment year, mark July 1 on your calendar now.
Do you keep my data?
No. Every field you fill in stays on your device. The tool runs entirely in your browser. We never send your parcel number, property address, assessed value, or comparable sales to any server. Close the tab and it's gone.
$49 full appeal package
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Find your county
County-specific filing pages for all 39 Washington counties.
Full filing detail (BOE address, online filing, parcel viewer)
Universal WA process (RCW 84.40.038) plus county pointer
- Adams County
- Asotin County
- Benton County
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- Clallam County
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- Grays Harbor County
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- Kittitas County
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- Lewis County
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- Mason County
- Okanogan County
- Pacific County
- Pend Oreille County
- San Juan County
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- Stevens County
- Wahkiakum County
- Walla Walla County
- Whitman County
- Yakima County