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The Tax Advisor Office provides King County taxpayers advice and assistance on property tax related matters including appeals. The Tax Advisor Office is a division of the King County Office of the Ombudsman. The Tax Advisor Office is independent of the County Assessor’s Office in accordance with state law (RCW 84.48.140).

What assistance does the Tax Advisor Office provide?
Tax Advisor staff is familiar with state and county property tax laws, appraisal and assessment practices, tax calculation and billing procedures, and local and state appeal processes.

We assist the public by:
  • Answering questions on value notices, appeals, exemptions, taxes and levy rates;
  • Researching property sales for taxpayers evaluating their assessments;
  • Guiding taxpayers doing independent research; 
  • Working with the King County Assessor, King County Treasury, King County Board of Equalization, Washington State Board of Tax Appeals, and the Washington State Department of Revenue to resolve taxpayer concerns.

For more information about our office, please read our brochure.

What can’t the Tax Advisor Office do?
We cannot reduce your assessed value, lower your tax bill, or change your property characteristics. However, we can advise you on the procedures to accomplish a change; what information is relevant and where to find it; who to talk to and how to most effectively present your case.

We are here to help:
Contact our office to arrange an appointment.

Telephone: 206-477-1060
Toll Free: 1-800-325-6165 ext. 7-1060
TTY Relay: 711
Fax: 206-296-0948
taxadvisor@kingcounty.gov

Related information:

Appeals information

County Assessor's Office

County Treasurer's Office