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Washington · Adams CountyAdams County, WA property taxes. A steady market. Check the details.
The typical home in Adams County was worth about $314,000 in January 2026, up 1.5% from a year earlier. In a steady market, an appeal works best for specific homes whose assessment ran ahead of what they'd sell for.
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What Adams County home values did
Adams County values rose 1.5% in the year to January 2026, reaching a new high. That's in line with Washington as a whole (+0.5%).
Values kept sliding after January: by August 2026 the typical home was 2.0% lower again, which matters for next year's notice.
| Month | Typical value | vs. a year earlier |
|---|---|---|
| January 2021 | $227,000 | +16.1% |
| January 2022 | $265,000 | +16.7% |
| January 2023 | $288,000 | +8.6% |
| January 2024 | $297,000 | +3.4% |
| January 2025 | $309,000 | +3.9% |
| January 2026 | $314,000 | +1.5% |
| August 2026 (latest) | $307,000 | -2.0% since January |
Peak since 2021: $314,000 in July 2025. January 2026 was 0.2% below it.
Adams County places by change from peak
Every Adams County place with enough data, ranked by the gap between January 2026 and its post-2021 high. Each links to its own guide.
| Place | January 2026 | 1-year change | vs. peak |
|---|---|---|---|
| Lind | $200,000 | -4.9% | -5.3% |
| Ritzville | $241,000 | -2.0% | -2.7% |
| Othello | $342,000 | +2.4% | At peak |
What to check on your notice
The typical Adams County home gained 1.5% in the year to January 2026. A notice that rose far more than that, or a value above what similar homes nearby actually sold for, is the usual starting point for an appeal.
Keep the state's limits in mind: No cap on a home's assessed value. The 1% limit applies to the total tax revenue a taxing district can collect, not to your individual home.
How a Washington appeal works
Values in Adams County are set by the local county assessor, and the appeal starts there. The rules below apply statewide; your notice has the exact dates and office for your property.
| Who sets the value | County assessor. Each county assessor values all taxable real property in the county every year. Appeals go to an independent County Board of Equalization. |
|---|---|
| Valuation date | January 1 |
| Your notice | Change of Value Notice (assessment notice) |
| Deadline | File your petition with the County Board of Equalization by July 1 of the assessment year, or within 30 days after the assessor mailed your change of value notice, whichever is later. Counties can extend the 30 days to up to 60 days, so check your county. |
| First step | Petition to the County Board of Equalization. Many assessors will also review your value informally if you call before you file. |
| If you still disagree | Appeal to the State Board of Tax Appeals within 30 days of the date the county board mailed its decision, either informal (simpler, cannot go on to Superior Court) or formal (can be appealed to Superior Court). |
| Form | Form 64 0075, Taxpayer Petition to the County Board of Equalization for Review of Real Property Valuation Determination |
Reading this in fall 2026? The 2026 deadline has passed (July 1, 2026, or 30 to 60 days after your notice, depending on the county). Your next chance is the 2027 assessment: notices are mailed during 2027 and you can file by July 1, 2027, or 30 days (60 in counties that extended) after your notice date, whichever is later. If you already appealed in 2026, the Board of Tax Appeals deadline is 30 days from the date the county board mailed its decision.
- Washington revalues every property every year, so you can appeal every year.
- The board may accept a late petition if it is filed within a reasonable time and you show good cause.
- If you file after July 1 you must attach a copy of the notice showing when it was mailed.
Find your local office in the Washington Department of Revenue, Board of Equalization information (find your county board through your county assessor).
Building a Adams County case
The numbers above describe the typical Adams County home, not yours. Adams County is part of the Othello metro, but your evidence should be local. Sales a few streets away usually beat sales across the metro.
- Send all your evidence with the petition or at least 21 business days before your hearing.
- Use sales of similar homes near January 1 of the assessment year, and photos of any condition problems.
- The Department of Revenue says you must show the value by clear, cogent, and convincing evidence, so documents beat opinions.
Get your Adams County appeal report
Start with your address. Vulorean checks your assessment against recent comparable sales and builds a value report you can bring to your Washington appeal. Eligible reports are free during launch; an account is required and local filing fees are separate.
Check my property and get a report →Vulorean was built for California first. Washington forms, deadlines and filing rules vary, so confirm them with your local office before filing. If something in your report looks wrong, email support@vulorean.com and we'll get it fixed.
Home values: Zillow Home Value Index (ZHVI), all homes, mid-tier, smoothed and seasonally adjusted, through August 2026, from Zillow Research. Rules: RCW 84.40.038, Petition to board of equalization, filing deadlines, Washington DOR Form 64 0075 petition, Washington Board of Tax Appeals FAQs, Washington DOR, how the 1% levy limit works. Vulorean is an independent service, not a government office. Confirm dates and forms with your local office.