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Learn how to register for consultant/contractor training sessions, apply for Small Contractor and Supplier certification, view current advertised solicitations, and much more.

Project presentation

July 8, 2019 presentation
July 8, 2019 consultant/contractor meet and greet presentation Download PDF 2 MB.

Links to more information

  • Procurement & Payables
    Register as a vendor, see current solicitations being advertised from King County, see anticipated Capital Projects from other divisions, and see the trainings offered to consultants and contractors for doing business with King County.
  • Business Development and Contract Compliance (BDCC)
    BDCC runs the new "Innovation Program". As mentioned in our Meet and Greet, contracts will contain either an SCS goal or be part of the Innovation Program. View a current SCS-certified firm Directory and information on how to get firms certified.
  • Diversity Compliance Management System (DCMS)
    Provides streamlined online processes to facilitate reporting for companies doing business with King County.
  • 2019 Comprehensive Solid Waste Management Plan
    Washington State law requires that each county, in cooperation with the cities located in the county, prepare a coordinated, comprehensive solid waste management plan (Plan) as outlined in RCW 70.95.080 external link .
  • King County green building
    Green building techniques, coupled with upgrades and proper maintenance of existing buildings, can help reduce the impacts of the building sector on greenhouse gas emissions, contaminated storm water, and burdens on existing landfill space.
  • King County Strategic Climate Action Plan
    Provides a "one-stop-shop" for county decision-makers, employees, and the general public to learn about the County's climate change goals, priorities and commitments.
  • Equity and Social Justice Credits
    King County's green building policy includes equity and social justice as an important factor for successful sustainable development.
  • Sustainable Infrastructure Scorecard
    The Sustainable Infrastructure Scorecard uses basic concepts of the LEED® rating system, adapted to more appropriately apply to infrastructure projects in King County.
  • Do business with King County
    Learn about contracting opportunities, register as a vendor, certify your small business and more.
  • King County's Equity and Social Justice Strategic Plan
    The Plan is a blueprint for action and change that will guide King County's pro-equity policy direction, decision-making, planning, operations and services, and workplace practices in order to advance equity and social justice within County government and in partnership with communities. For more information on the Equity and Social Justice Innovation Plan, please email
  • Current advertised solicitations
    Registration/login required.
  • Online vendor registration
    Sign up for email notices of new solicitations, apply to participate in roster programs (unadvertised contracts), be featured in our online directory of approved vendors, get priority when submitting quotes for purchases between $10,000 - $50,000
  • Training and events - how to do business with King County
    Attend a free, in-person orientatio to learn more about King County's contracting process, effective marketing strategies, and tips for submitting successful bids and proposals.
  • Apply for Small Contractor and Supplier Certification (good for County, Sound Transit, Port of Seattle and Seattle Colleges)
    Get certified as a Small Contractor and Supplier (SCS) and increase the competitiveness of your firm as a contractor, consultant or supplier for King County contracts.

Documents and additional resources

  • Q&A from July 8, 2019 event Download PDF 50 K
  • Attendee list from July 8, 2019 event Download PDF 100 K
  • Upcoming events (not owned by King County Procurement & Payables))
    • 2019 City of Seattle Reverse Vendor Trade Show
      July 31, 2019 11:00am-3:00pm
      Seattle Center Fisher Pavilion
      305 Harrison St, Seattle external link
      More info and RSVP: The Buy Line Blog external link
      Description: The Reverse Vendor Trade Show is an annual event hosted by the City of Seattle to allow vendors the opportunity to introduce themselves to a variety of public agency representatives. Vendors can learn about upcoming solicitations, procurement opportunities and sustainable purchasing while networking with other local vendors. Women-owned and minority-owned businesses are especially encouraged to attend. King County will be hosting a booth.
    • Washington State Training Requirement
      Background: New state law requires L&I training before bidding on public works. Starting July 1, 2019 construction contractors bidding on any public works project in Washington State must attend training from the Department of Labor & Industry. This new law also applies to King County public works projects. Some firms are exempt from training. Visit the Washington State Department of Labor & Industries external link to learn more. Questions regarding this requirement should be directed to


Direct questions/feedback to:
Jesse Gonzalez
Contracts Manager
King County Solid Waste Division
206-263-9335 | TTY Relay: 711

Contact Us

 Call: 206-477-4466

TTY Relay: 711

Fax: 206-296-0197

King County Solid Waste Division mission: Waste Prevention, Resource Recovery, Waste Disposal