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Property Tax Advisor Office
King County Administration Building
500 Fourth Ave, Rm 540
Seattle, WA 98104

Telephone: 206-296-5202
Toll Free: 1-800-325-6165 ext. 6-5205
TTY: 206-296-3452
Fax: 206-205-0770 
taxadvisor@kingcounty.gov

The Property 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 Citizen Complaints — Ombudsman. The Tax Advisor Office is independent of the 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 Department of Assessments, 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.

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.

Community Groups:
Staff from the Tax Advisor Office are available to meet with community groups.