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King County Solicitations

Procurement and Contract Services Section
401 Fifth Ave., 3rd Floor
Seattle, WA 98104
Phone: 206-263-9400
TTY Relay: 711
Fax: 206-296-7675/ 206-296-7676
Vendor Registration

Thank you for your interest in doing business with King County.

King County Procurement and Contract Services Section makes this online registration system available for the use and convenience of all business entities interested in public bid/proposal opportunities available through our agency. As a registered vendor, it is your responsibility to keep all personal contact information current. If your e-mail address is not correct, your listing shall be deactivated in our system as part of regular maintenance. Being a registered vendor does NOT guarantee the receipt of electronic notification for all applicable solicitations. Vendors should routinely check our website for a listing of current business opportunities. Procurement and Contract Services shall not be responsible if a vendor does not receive an electronic notification for any particular reason.

Legal Notice

King County has implemented Online Vendor Registration (OVR) to permit vendors, consultants and contractors to register their business with the County by creating a unique User ID, or to visit the website as a guest. The County’s ITBs, RFPs, & RFQs, with any attachments including addenda, are available for viewing by all users; but only registered firms can add themselves to plan holders lists and receive email notifications of addenda or other important information concerning the solicitation.

You must register & add yourself to the "Holders List" to be included on the official plan holders list for any specific ITB, RFP, or RFQ.

Registration questions should be directed to the Webmaster at