RFPs, RFIs, RFQs, Sources Sought and Government Contracting Opportunities in King County, Washington
Browse open government contracting RFPs, RFIs, RFQs, and Sources Sought in King County, Washington on Bidscope. We aggregate active government contracting opportunities from federal, state, and local agencies across King County, Washington, refreshed daily so you never miss a bid. Click any opportunity below for full solicitation details, due dates, and contacts.
| Status | Title | Buyer | Due Date |
|---|---|---|---|
| Open | Seattle Public Utilities Security Services The City of Seattle is seeking a vendor to provide unarmed fixed-post, roving patrol, mobile response, and emergency security services for Seattle Public Utilities facilities and infrastructure throughout Seattle and King County. King County, WA, USA•Invitation for/to Bid (IFB/ITB) | City of Seattle > Seattle Public Utilities > Contracts and Procurement Division | 10/19/2026 |
| Open | Organizational Development Consulting Services King County is soliciting submittals from qualified firms to provide organizational development consulting services, including related training and development. King County, WA, USA•Request for Quote/Qualifications (RFQ)Small Business | King County > Department of Human Resources | 9/15/2026 |
| Open | Heavy Civil GC/CM Services for South Treatment Plant Treatment and Electrical Improvements King County is seeking a heavy civil general contractor/construction manager to provide preconstruction and construction services for treatment, odor control, and electrical improvements at the South Treatment Plant. King County, WA, USA•OtherSmall Business | King County > Wastewater Treatment Division | 10/13/2026 |
| Open | Offsite Wastewater Facility Electrical Construction King County's Wastewater Treatment Division is seeking a contractor for industrial electrical repairs, replacements, testing, controls installation, and safety improvements at offsite wastewater facilities. King County, WA, USA•Invitation for/to Bid (IFB/ITB)Small Business | King County > Wastewater Treatment Division | 9/29/2026 |
| Open | Attic Remediation at Gilman Square Apartments The King County Housing Authority is seeking a contractor to perform attic remediation at Gilman Square Apartments, with bids due September 17, 2026. King County, WA, USA•Request for Proposal (RFP) | King County Housing Authority | 9/17/2026 |
| Open | Sheriff's Office Vehicle Graphics Services King County is soliciting bids for as-needed graphic decal design, printing, installation, and removal services for the King County Sheriff's Office. King County, WA, USA•Invitation for/to Bid (IFB/ITB)Small Business | King County > Sheriff's Office > Patrol Operations | 10/14/2026 |
| Open | KCLS Artists Roster The King County Library System is seeking qualified artists for a roster supporting future acquisitions of existing two- and three-dimensional artwork and site-specific commissions across its library facilities. King County, WA, USA•Request for Quote/Qualifications (RFQ) | King County Library System | 9/16/2026 |
| Open | Infant Mental Health Consultation Services Public Health–Seattle & King County is seeking Infant Mental Health experts to provide consultation services. King County, WA, USA•Request for Proposal (RFP) | King County > Department of Community and Human Services | 9/30/2026 |
| Open | 2027 Board Election Postcard Mailer Services King Conservation District is seeking a consultant to design, print, sort, and mail approximately 270,000 election postcards to eligible voting households for its 2027 Board Election. King County, WA, USA•Request for Proposal (RFP) | King County > King Conservation District | 9/23/2026 |
| Open | BAE Bus Propulsion Parts and Tools King County Metro is soliciting bids for the purchase and delivery of genuine BAE Systems tools, components, sub-assemblies, hardware, and replacement parts for hybrid-electric and electric bus propulsion-system maintenance. King County, WA, USA•Invitation for/to Bid (IFB/ITB)Small Business | King County > Metro Transit Department > Vehicle Maintenance Division | 9/16/2026 |
| Open | Work-Order Engineering Services for Solid Waste Landfill Systems King County, Washington is seeking proposals for work-order engineering and related services supporting solid waste landfill systems and facilities under an active A&E solicitation. King County, WA, USA•Request for Proposal (RFP)Minority-Owned BusinessWoman-Owned BusinessSmall Business | King County > Department of Natural Resources > Solid Waste Division | 9/15/2026 |
| Open | Roof Replacement and Repair Work King County is seeking a contractor to provide complete roof replacement and repair work, including all labor, materials, equipment, transportation, and related construction services. King County, WA, USA•Invitation for/to Bid (IFB/ITB)Small Business | King County > Wastewater Treatment Division | 9/28/2026 |
| Open | King County Sheriff's Office Uniforms and Related Items King County is soliciting bids for the as-needed supply of uniforms and related items for the King County Sheriff's Office. King County, WA, USA•Invitation for/to Bid (IFB/ITB)Small Business | King County | 9/23/2026 |
| Open | SR 518 Tukwila International Boulevard BRT Station Project The Washington State Department of Transportation is seeking a design-build contractor for the SR 518 Tukwila International Boulevard BRT Station Project, including a new BRT station, pedestrian bridge, and fish passage structure, with an estimated budget of $125-165 million. King County, WA, USA•Request for Proposal (RFP)Disadvantaged Business | Department of Transportation | 11/16/2026 |
| Open | Janitorial Services for Various Sites – West The City of Bellevue is seeking contractors to provide janitorial services at designated Parks & Community Services facilities and other needed sites, with separate west service-area schedules and possible multiple awards. Bellevue, WA, USA•Request for Proposal (RFP) | City of Bellevue | 9/17/2026 |
| Open | Solid Waste Collection Services The City of Bellevue is requesting proposals for solid waste collection services including garbage, recyclables, and organics collection, litter collection, emergency services, and customer service, with a due date of October 12, 2026. Bellevue, WA, USA•Request for Proposal (RFP) | City of Bellevue | 10/12/2026 |
| Open | Citywide On-Call Electrical Services The City of Bellevue is seeking one or more contractors for citywide on-call electrical repair, maintenance, replacement, installation, and emergency response services, including traffic signals, streetlighting, and traffic-safety equipment. Bellevue, WA, USA•Request for Proposal (RFP) | City of Bellevue | 9/18/2026 |
| Open | Janitorial Services for Various Sites - East The City of Bellevue, Washington is seeking a contractor to provide janitorial services at designated Parks & Community Services facilities and other sites as needed, with possible awards for separate service areas. Bellevue, WA, USA•Request for Proposal (RFP) | City of Bellevue | 9/17/2026 |
| Open | Overlake ADA Curb Ramp Design Services The City of Redmond is seeking consulting firms for engineering design and related support for approximately 20 ADA-compliant curb ramps and driveway approaches near 150th Avenue NE and NE 40th Street. Redmond, WA, USA•Request for Quote/Qualifications (RFQ)Small Business | City of Redmond | 9/23/2026 |
| Open | Enterprise Content Management Software and Implementation Services The City of Redmond is seeking cloud enterprise content management software and implementation services for 50 administrator and 550 read/write/update user licenses to unify citywide records management, public records request processing, document search, retention, compliance, and integrations. Redmond, WA, USA•Request for Proposal (RFP) | Richland > Purchasing Division | 10/2/2026 |
| Open | Rainier Avenue Corridor Improvements—Phase 5 Engineering Design The City of Renton is seeking civil and structural engineering design services for Phase 5 improvements to Rainier Avenue, including roadway, transit, pedestrian, bicycle, traffic, utility, and retaining-wall design. Renton, WA, USA•Request for Quote/Qualifications (RFQ)Other | City of Renton | 9/16/2026 |
| Open | Rainier Avenue Corridor Improvements—Phase 5 Engineering Design The City of Renton is requesting qualifications from consultants for civil and structural engineering design services for the Rainier Avenue Corridor Improvements—Phase 5 project, including roadway, transit, pedestrian, bicycle, utility, and retaining-wall design. Renton, WA, USA•Request for Quote/Qualifications (RFQ)Other | City of Renton > Public Works / Facilities | 9/16/2026 |
| Open | Commercial Real Estate Brokerage Services King Conservation District is seeking a commercial real estate broker to identify, evaluate, negotiate, and secure a 10,000- to 13,000-square-foot office and warehouse property for purchase or lease in the Renton/Tukwila area. Renton, WA, USA•Request for Quote/Qualifications (RFQ) | King County > King Conservation District | 9/21/2026 |
| Open | Duplicating Supplies, Ink, and Toner Cartridges The King County Directors' Association is seeking electronic bids for duplicating supplies, ink, and toner cartridges under Bid #27-037, with an estimated annual contract value of $230,000 to $250,000 for participating member agencies. Kent, WA, USA•Invitation for/to Bid (IFB/ITB) | King County Directors' Association | 10/1/2026 |
| Open | Grade 92 Heat Treatment and Mechanical Properties Testing TerraPower LLC is seeking a supplier to provide Grade 92 heat treatment and mechanical properties testing supporting non-destructive examination. TerraPower, Bellevue, WA, USA•Request for Proposal (RFP) | TerraPower LLC | 9/18/2026 |
How do I find government contracting RFPs in King County, Washington?+
Bidscope continuously aggregates open RFPs, RFIs, RFQs, and Sources Sought in King County, Washington from federal, state, and local government agencies. Browse the opportunities on this page, or create a free Bidscope account to get matched to relevant bids and receive alerts the moment new ones are posted.
How many open opportunities are available in King County, Washington?+
Bidscope tracks open King County, Washington opportunities from federal, state, and local agencies, with the list updated daily as solicitations are posted and closed. Create a free Bidscope account to see how many match your business and get alerted to new ones.
Is Bidscope free to use?+
You can browse government opportunities on Bidscope for free. Create an account to unlock AI-powered matching, saved searches, and instant alerts tailored to your business.