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Tips for Success

View the Upcoming Capital Projects to learn more about anticipated contracting opportunities. 

We advertise in the Seattle Times. Or, register as a vendor to sign up for automatic email notifications

King County uses rosters for projects less than $300,000.

Roster projects are unadvertised; only roster members are invited to submit proposals for roster projects. Because of their limited scope, roster projects are ideal for small firms.

Visit the Rosters page and begin the application process.

Visit our Online Vendor Registration portal (OVR) and view the Planholders list.

You can also attend a pre-proposal meeting for advertised contracts. View the Attendees List posted to the Solicitation Details page on the OVR.

Visit the SCS Directory to search by category, NAICS, CSI, name or description.

Visit the SCS Certification page to learn how to qualify and become certified.

Firms interested in current or upcoming work that believe there may be a potential conflict of interest because of previous or concurrent work with King County (or any other related third-party work) may seek a written determination from King County regarding the firm's eligibility to propose. King County's written response will be binding. Written requests must include the following information:

  1. A detailed description of the specific scope of the previous or concurrent work and how it relates to the specific scope of work to be performed by the firm for upcoming work;
  2. The identification of any personnel that will be used on the current scope of work that also were involved in the previous or concurrent work and their respective roles on each;
  3. A detailed explanation regarding why the firm believes there is no conflict of interest that would preclude the firm from performing the scope of work; and
  4. Any internal measures that the firm proposes to implement to eliminate any potential or perceived conflict of interest that would preclude the firm from performing the work.

Subconsultants to potential prime proposers may seek similar determinations, but the required information must be submitted to King County through a potential prime consultant.

Submittal:

Submit written requests to:
Tina Davis, Architecture & Engineering Services Team Lead
tina.davis@kingcounty.gov

A/E Roster

Roster projects are not advertised; only roster members can bid. 

King County uses rosters for smaller projects (less than $300,000). 

Apply for roster membership

Contact Us

Phone: (206) 263-9400

TTY Relay: 711

Fax: (206) 296-7676