Snohomish County has published a clear deadline for appeals of 2026 assessed values for taxes payable in 2027: August 25, 2026, at 4:00 p.m.The county says the Assessor mailed Official Notices of Value on June 26, 2026.
It also warns residents that some solicitation letters have circulated with an incorrect July 1 deadline.Official sourceSnohomish County Board of Equalization:https://www.snohomishcountywa.gov/134/Board-of-EqualizationSource reviewed August 2, 2026.
County instructions can change; use the live county page and the deadline printed on the applicable notice before relying on this summary.What the county saysAccording to the Board of Equalization, an appeal may be submitted electronically, mailed, or delivered in person.For electronic submissions, the county says the petition must be timestamped no later than 4:00 p.m.