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eAppeals - Online Property Appeals

Board of Appeals / Equalization

Appeal King County Property Assessments Online
If you pay property taxes in King County you have the right to appeal your property's assessment.

  • State law puts the burden of proof on the property owner to show that the assessment is incorrect. You must have strong enough evidence to show that the assessor's value is incorrect. Stating that your property taxes are too high, comparisons of other assessed values, or evidence about prior year assessed values are not acceptable evidence of fair market value and therefore not relevant testimony. You need to establish what you think your property is worth therefore the best evidence of this would be sales of similar properties. See WAC 458-14-005(2)
  • You must file your appeal within 60 days of the mailing date shown on your Official Property Value Notice (pdf 108 KB)
  • To use this site most effectively, consider these suggestions
  • There is no fee to file an online appeal
  • Download the Real Property (pdf 348 KB) Personal Property (pdf 1401 KB) petition to file in paper
  • Alternate formats are available