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King County Department of Assessments

Fair, equitable, and understandable property valuations
DEPT. OF ASSESSMENTS
500 Fourth Ave.,
#ADM-AS-0708
Seattle, WA 98104

DIRECTIONS

HOURS
Mon – Fri: 
8:30 a.m. to 4:30 p.m.

PHONE
Tel: 206-296-7300
Fax: 206-296-5107
TTY: 206-296-7888

E-MAIL US

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DID YOU KNOW?

The assessor's staff is available to assist you in any way we can. If you have question or concerns, please feel free to call us at 206-263-2422.

Welding equipment

eLISTING OPTIONS

Personal property used in a business on January 1 must be reported in that year to the assessor of the county in which the property is located. Reports must be filed
by April 30 or the taxpayer will incur a monthly penalty of 5 percent of the tax due, not to exceed 25 percent.

Tutorial (3MB, .PPS), .PDF format - Please view this tutorial prior to e-filing.

Instructions

Registration

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