Thurston 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
- February 9, 2026; Thurston County announced that the Treasurer mailed 2026 property-tax notices that week.
- Payment deadline
- 2026: first-half payment due April 30, 2026 and second-half payment due October 31, 2026; Thurston County permits online, mailed, drop-box, and in-person payment.
Exemptions & appeals
Exemption filing
December 31, 2025 for a 2026 assessment-year Senior/Disabled exemption under the Washington application schedule; applications are administered by the Thurston County Assessor.
Senior relief
For 2026, Thurston County's FAQ describes the Senior/Disabled exemption for age 61+ or disability, owner-occupants, with annual household income not exceeding $59,000. The program reduces voted and regular levies based on income; Senate Bill 6162 expands thresholds beginning January 1, 2027. Contact 360-867-2200: https://www.thurstoncountywa.gov/departments/assessor/property-tax-relief-programs
Valuation limits
Washington has no individual parcel assessed-value cap. County assessors value property at 100% of true and fair market value; regular taxing-district levy revenue is generally limited to a 1% annual increase plus new construction under RCW 84.55, subject to voter-approved lid lifts and other statutory rules. The 1% constitutional levy limit constrains aggregate regular levies, not an individual parcel's value.
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 →