The BOE will NOT be accepting electronic appeals for the 2025 assessment year. The electronic filing process was added out of necessity in 2020, but regrettably, the demand expanded beyond the resources of the 2-person BOE office. Therefore, this service will not be offered for the 2025 appeal period. Please mail or drop off your signed (hand-written signature) Petition with a copy of your Value Notice to Thurston County BOE, 3000 Pacific Avenue SE, Olympia, WA 98501. If BOE staff are unavailable, please drop off your Petition and Value Notice in one of the available drop boxes - across from the BOE office (Room 241), or in the Thurston County drop box in the parking lot of the Atrium. Help Clinics will be held 11/17, 11/24 and 12/1 from 11 am to 2 pm AND on 11/7, 11/14 and 11/21 from 9 am to 12 pm. THE BOE OFFICE WILL BE OPEN 8 AM TO 5 PM FROM DECEMBER 4 TO DECEMBER 9 (DEADLINE DAY). If you need assistance or wish to make an appointment (including evenings), please email the Clerk of the Board, Ruth Elder (ruth.elder@co.thurston.wa.us).

The Assessor's Office sent 2025 Official Property Value Change Notices for residential and commercial real property, new construction and personal property on October 10, 2025. The DEADLINE for appealing these assessments with the BOE (unless otherwise shown on the Notice) is TUESDAY, DECEMBER 9, 2025. In order to have a valid appeal, you must file a properly-completed Petition with a copy of your 2025 Value Notice with the BOE by the deadline day at 5 pm. Keep in mind, the US Postal Service processes mail in Tacoma so if an appeal is mailed on the deadline date, it might not be post-marked until the next day, which would make it late and invalid. There are very few exceptions for good cause waivers for Petitions filed after the deadline. See the "Assessment Appeals (2025)" section for more information. Additional answers to your questions may also be found on the "Frequently Asked Questions (FAQ)" page and "The Appeal Process" page.

The Board is currently hearing 2022 and 2023 assessment year appeals. When a hearing is scheduled for you, the Clerk of the Board will send you a Hearing Notice prior to your hearing. You will be given an opportunity to reschedule the date if need be. As it is often necessary to schedule hearings with a short turnaround time to submit additional evidence, it is important to note that YOU MAY SUBMIT ADDITIONAL EVIDENCE PERTAINING TO YOUR APPEAL AT ANY TIME DURING THIS PROCESS UP TO 21-BUSINESS DAYS PRIOR TO YOUR SCHEDULED HEARING. Providing effective and convincing evidence early may lead to discussions with the Assessor's Office and a possible Stipulation Agreement preventing the need for a hearing to be held. Per WAC 458-14-056(6), if you have a pending appeal with the BOE, and you receive a new Value Notice from the Assessor that you disagree with, you must file a timely Petition with the BOE in order to preserve your right to appeal for that year. This is an annual process and each year's Petition stands on its own merits.