What is the deadline for filing a property tax appeal?
In King County, the deadline for filing a property tax appeal is typically July 1st of the year in which the tax assessment was made. This means if a property owner wishes to contest their assessed value for the current tax year, they must submit their appeal by that date. The appeal is usually filed with the King County Board of Equalization. It is essential for property owners to be mindful of this deadline and to have all necessary documentation prepared for the appeal process. Information regarding the appeal process, including any changes to deadlines or procedures, can often be found on the current King County Assessor’s website. This resource may provide valuable insights and specific guidance about the appeal process.

Answered Jun 26, 2025
Need further help?
Type out your followup or related question and we will get you an answer right away.
Need to contact King County Assessor?
If you need to talk to King County Assessor customer service, now that you have the answers
that you needed, click the button below.
Contact King County Assessor