King County government contracts, bids & RFPs
State / local / other government buyer · 21 open bids
Open government contracts, bids and RFPs from King County, the vendors it awards most, and the industries it buys — aggregated from public procurement data and updated daily.
Paste your website — we'll show the open government contracts that fit your business.
Free · no signup · we read your homepage once. We don't store your email.
King County contract activity
A current snapshot based on 20 of 21 open listings shown on this page. Counts update with the directory.
- King County, WA20
Deadline outlook
- Next 30 days
- 20
- Later
- 0
- Open / rolling
- 0
Most represented buyers
- King County, WA20
18 of the listings shown were posted in the last 30 days. King County, WA contributes the largest share (20). King County, WA is the most represented buyer in this snapshot.
Open opportunities
- Shoreline Transfer Station Dust Control ProjectKing County, WA
The purpose of the contract is to install a new dust control system at the Shoreline Transfer Station. The work includes but is not limited to installation of a steel partition wall on mezzanine over tipping floor, construct and install misting system modifications including new pump, air compressor, sensors, control, programming, testing and commissioning, installation of supply fan and tie into existing controls, demolition of duct hood and cap ducting, test and balance HVAC system in office…
MoreDue Oct 26, 2026Posted Oct 16, 2026 - RFP-KCIT Workforce Management SolutionKing County, WA
King County Information Technology (KCIT, King County), is seeking proposals for a comprehensive, scalable Workforce Management Solution that enhances operational efficiency, supports strategic workforce planning, and delivers real-time insights to optimize staffing, scheduling, and labor compliance for the initial two (2) separate participating County agencies, King County Sheriff’s Office (KCSO) and King County Department of Natural Resources and Parks (DNRP) Solid Waste Division (SWD) with…
MoreDue Oct 26, 2026Posted Sep 29, 2026 - RFP-KCIT Workforce Management SolutionKing County, WA
King County Information Technology (KCIT, King County), is seeking proposals for a comprehensive, scalable Workforce Management Solution that enhances operational efficiency, supports strategic workforce planning, and delivers real-time insights to optimize staffing, scheduling, and labor compliance for the initial two (2) separate participating County agencies, King County Sheriff’s Office (KCSO) and King County Department of Natural Resources and Parks (DNRP) Solid Waste Division (SWD) with…
MoreDue Oct 26, 2026Posted Oct 6, 2026 - RFP-KCIT Workforce Management SolutionKing County, WA
King County Information Technology (KCIT, King County), is seeking proposals for a comprehensive, scalable Workforce Management Solution that enhances operational efficiency, supports strategic workforce planning, and delivers real-time insights to optimize staffing, scheduling, and labor compliance for the initial two (2) separate participating County agencies, King County Sheriff’s Office (KCSO) and King County Department of Natural Resources and Parks (DNRP) Solid Waste Division (SWD) with…
MoreDue Oct 26, 2026Posted Oct 19, 2026 - RFP-KCIT Workforce Management SolutionKing County, WA
King County Information Technology (KCIT, King County), is seeking proposals for a comprehensive, scalable Workforce Management Solution that enhances operational efficiency, supports strategic workforce planning, and delivers real-time insights to optimize staffing, scheduling, and labor compliance for the initial two (2) separate participating County agencies, King County Sheriff’s Office (KCSO) and King County Department of Natural Resources and Parks (DNRP) Solid Waste Division (SWD) with…
MoreDue Oct 26, 2026Posted Oct 14, 2026 - Eastrail - Central Wilburton Interim TrailKing County, WA
This project provides for the improvement of an interim gravel trail for the Eastrail – Central Wilburton Interim Trail from SE 5th Street to NE 4th Street in the City of Bellevue. Work includes grading, rail and tie removal, culvert improvement, roadway crossing and signal at SE 1st intersection, landscaping, erosion control and traffic controls, and other works.
MoreDue Oct 27, 2026Posted Oct 22, 2026 - Cedar Hills Regional Landfill Pilot-Scale Micro-ElectrolysisKing County, WA
The pilot-scale ME project, which targets arsenic in industrial wastewater from the methane processing plant located at CHRLF, is part of the overall leachate and lagoon improvements project at CHRLF. The pilot-scale ME technology and treatment system has been selected to pretreat the industrial wastewater stream from the methane processing plant prior to the stream entering the leachate lagoon pretreatment system. The experimental ME technology was developed by the University of Washington…
MoreDue Oct 27, 2026Posted Oct 9, 2026 - Eastrail - Central Wilburton Interim TrailKing County, WA
This project provides for the improvement of an interim gravel trail for the Eastrail – Central Wilburton Interim Trail from SE 5th Street to NE 4th Street in the City of Bellevue. Work includes grading, rail and tie removal, culvert improvement, roadway crossing and signal at SE 1st intersection, landscaping, erosion control and traffic controls, and other works.
MoreDue Oct 27, 2026Posted Oct 1, 2026 - RFP-Dye-Dilution Testing ServicesKing County, WA
King County is soliciting proposals from interested and qualified suppliers to provide dye-dilution testing services for sewer flow meters and other applications.
MoreDue Oct 30, 2026Posted Oct 9, 2026 - King County International Airport Pavement Improvements Work Order - RebidKing County, WA
B.A. The Contract consists of Work Orders to be issued by the Airport within the Contract Time for paving and drainage maintenance improvements at the Airport. Work includes, but is not limited to, clearing, excavation, removal, and disposal of existing site materials; placing finished and curbing of unreinforced and reinforced slabs; paving with Portland Cement Concrete and/or asphalt concrete; installations of pipe sections, installation and removal of pavement paint markings, emergency…
MoreDue Nov 3, 2026Posted Oct 15, 2026 - Construction Management Services for Desimone Levee Major Repair ProjectKing County, WA
The purpose of this contract is to provide construction management services to King County Department of Natural Resources and Parks, Water and Land Resources Division (“County”) which includes constructability reviews and construction management and inspection (CM&I) services for the Desimone Levee Major Repair Project.
MoreDue Nov 4, 2026Posted Oct 13, 2026 - ITB-Bus replacement glassKing County, WA
King County is seeking qualified firms to supply and deliver bus replacement glass and related materials for Metro transit vehicles. The selected contractor will provide glass that meets or exceeds Original Equipment Manufacturer (OEM) standards for safety, fit, clarity, durability, and performance. All components must comply with applicable federal, state, and local regulations, including transportation glazing safety requirements.
MoreDue Nov 4, 2026Posted Oct 22, 2026 - ITB-Bus replacement glassKing County, WA
King County is seeking qualified firms to supply and deliver bus replacement glass and related materials for Metro transit vehicles. The selected contractor will provide glass that meets or exceeds Original Equipment Manufacturer (OEM) standards for safety, fit, clarity, durability, and performance. All components must comply with applicable federal, state, and local regulations, including transportation glazing safety requirements.
MoreDue Nov 4, 2026Posted Oct 7, 2026 - Engineering, Planning, and Design Services for RapidRide R LineKing County, WA
The purpose of this contract is to provide multidisciplinary engineering, planning, design, and related services to King County Metro Transit, Capital Division (“County”) for the upcoming RapidRide R Line which will serve the city of Seattle. The Consultant shall plan, develop, design, and produce bidding documents for roadway/signal/sidewalk improvements, transit passenger facilities, and transit communication infrastructure, as well as any other needed components for the RapidRide R Line.…
MoreDue Nov 5, 2026Posted Oct 8, 2026 - Engineering, Planning, and Design Services for RapidRide R LineKing County, WA
The purpose of this contract is to provide multidisciplinary engineering, planning, design, and related services to King County Metro Transit, Capital Division (“County”) for the upcoming RapidRide R Line which will serve the city of Seattle. The Consultant shall plan, develop, design, and produce bidding documents for roadway/signal/sidewalk improvements, transit passenger facilities, and transit communication infrastructure, as well as any other needed components for the RapidRide R Line.…
MoreDue Nov 5, 2026Posted Oct 14, 2026 - Engineering, Planning, and Design Services for RapidRide R LineKing County, WA
The purpose of this contract is to provide multidisciplinary engineering, planning, design, and related services to King County Metro Transit, Capital Division (“County”) for the upcoming RapidRide R Line which will serve the city of Seattle. The Consultant shall plan, develop, design, and produce bidding documents for roadway/signal/sidewalk improvements, transit passenger facilities, and transit communication infrastructure, as well as any other needed components for the RapidRide R Line.…
MoreDue Nov 5, 2026Posted Oct 21, 2026 - Small Tool Calibration & Certification ServicesKing County, WA
King County is soliciting bids from qualified calibration laboratories to provide comprehensive calibration, testing, repair verification, and certification services for small tools.
MoreDue Nov 5, 2026Posted Sep 24, 2026 - Kiepe System Parts and ToolsKing County, WA
King County is seeking bids from qualified firms to supply new, original Kiepe Electric parts, specialty tools, and diagnostic equipment needed to maintain and repair County vehicles.
MoreDue Nov 12, 2026Posted Sep 23, 2026 - RFP On-Call Learning ConsultantKing County, WA
King County is soliciting proposals from interested and qualified suppliers to provide an On-Call Learning Consultant on an as-needed basis.
MoreDue Nov 17, 2026Posted Oct 16, 2026 - FRP PuncheonsKing County, WA
King County is seeking bids from qualified suppliers for Fiber Reinforced Polymer (FRP) puncheons for King County Park facilities.
MoreDue Nov 18, 2026Posted Oct 16, 2026
Showing 20 of 21 open bids.
How to win King County contracts
- Register as a vendor on King County's procurement portal.
- Match your NAICS / commodity codes to what it buys (see the top codes above).
- Ask about local small-business and vendor-preference programs — see set-asides explained.
- Monitor its open bids above, or set a GovBidAlerts alert.
New to government contracting? Start with our GovCon guides and glossary.