Adams County, WashingtonProperty records & tax offices
Links open the listed public-office or service-provider website in a new tab. This directory does not collect payments.
Find the right property record
Use the property portal for ownership and assessed value, the collector for a bill or balance, and the map for parcel location. Have the address, owner name, or parcel number ready.
Tax bills & filing dates
These are the dates and qualifications recorded in the directory. Confirm your tax year and current deadline with the official office and your property’s notice.
- Tax bill mailing
- March 13, 2026; Adams County states the 2026 tax statements were mailed Friday, March 13.
- Payment deadline
- April 30, 2026 for the first half or full amount; October 31, 2026 for the second half when the bill exceeds $50.
- Assessment appeal
- July 1, 2026 or within 30 days of the Change of Value Notice, whichever is later, for a county Board of Equalization appeal.
Exemptions & appeals
Senior relief
Adams County senior/disabled relief is for a principal residence and up to one acre, generally age 61+, disability, or qualifying surviving spouse, with income thresholds up to $41,000 on the county's current exemption page; call the Assessor at 509-659-3200 to apply.
Valuation limits
Washington's 1% limit applies to the annual property-tax revenue a taxing district may collect, not to an individual parcel's assessed value. Adams County assesses property under Washington's 100% fair-market-value system; assessed values may rise or fall with market conditions.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.
More exemption & appeal guidance →