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Solicitation Resources

Solicitation Resources

This page provides supplemental information related to contract solicitations for King County. Visit our E-Procurement Supplier portal to view active contracting opportunities or login to participate. For questions, please contact

This report details all suppliers who have taken an action in response to a publicly advertised solicitation. A new version of this report is updated every business day. Because the exact list can vary from day to day, we retain two weeks worth of reports available for review, grouped by date. When an addendum is issued, the Document Holders for that solicitation is reset and will only list suppliers who have taken an action in response to the solicitation since the addendum was issued.

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Below is a library of documents related to our solicitations advertised after October 26, 2020, that are not part of the formal solicitation documents.

  • Attendees Lists are a record of businesses who have attended pre-bid and pre-proposal conferences related to the solicitation. 
  • Submittals are the successful and unsuccessful submittals to past solicitations. Depending on the type of solicitation, these documents are either available after bid opening or after contract execution. For questions, please contact

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