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How to Do Business With King County Now Online

Attend a free orientation online. Learn more about King County's supplier registration, opting-in to King County rosters, certifying as a small business, our contracting process, tips for submitting successful bids & proposals, and an introduction to the E-Procurement Supplier Portal.

Chat with our contract specialists, sustainable purchasing manager, and our small business certification team.

Register to a session to find out more.

Architecture & Engineering

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Register

Construction

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Register

Goods & Services

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Register

Contact Us

Phone: (206) 263-9400

TTY Relay: 711

Fax: (206) 296-7676