King County RFPs

2026-2027 Small Works Roster

2026-2027 small works roster.

2026 Vendor Roster

2026 vendor roster.

King County Youth Well-Being Network - Renton Area Lead (Request for Proposals)

Provide youth well-being network - renton area lead.

Eastrail - Central Wilburton Interim Trail

King County Parks seeks construction of a 0.65-mile interim gravel segment of the Eastrail in Bellevue’s Wilburton neighborhood, connecting the NE 8th Street pedestrian bridge and Central Wilburton Sound Transit station with the Wilburton Trestle.

ITB-Nondestructive Rail Track Testing Services "Re-Bid"

Provide nondestructive rail track testing services.

Eastrail - Central Wilburton Interim Trail RFP

King County Parks seeks construction of a 0.65-mile interim gravel segment of the Eastrail in Bellevue’s Wilburton neighborhood, connecting the NE 8th Street pedestrian bridge and Central Wilburton Sound Transit station with the Wilburton Trestle.

RFP-Dye-Dilution Testing Services

King County seeks qualified suppliers to provide dye-dilution testing services for sewer flow meters and other applications.

Harborview Medical Center (HMC) Facility and Infrastructure Improvements Program - Make Ready Package 1a RFP

Make ready Package 1a Haul Road includes: Water management/treatment; earthwork/site preparation; asphalt paving; concrete paving/curbs; pavement markings; fences and gates; landscape; traffic signaling.

Engineering, Planning, and Design Services for RapidRide R Line

King County is soliciting engineering, planning, and design services for the RapidRide R Line under solicitation KC001764.

ITB-Fleet Sign Supplies

King County seeks bids from qualified firms to provide traffic sign printing supplies on an as-needed basis.

Small Tool Calibration & Certification Services

King County seeks bids from qualified calibration laboratories to calibrate and test small tools, verify repairs, and provide certifications.

ITB-Nondestructive Rail Track Testing Services (rebid)

King County is soliciting bids from qualified firms to provide nondestructive rail track testing services.

Paper Supplies, Reference Resources (Invitation for Bid)

Paper supplies, reference resources.

Small Tool Calibration & Certification Services RFP

King County seeks bids from qualified calibration laboratories to calibrate and test small tools, verify repairs, and provide certifications.

Multipurpose Copy Paper - White Only RFP

Provide multipurpose copy paper - white only.

WO Construction Management Services for Water and Land Resources Division (Request for Proposals)

Provide construction management and inspection, and related services on a work order basis for King County (“County”).

Dahl Restroom Renovation

Restroom renovation.

Kcso Vehicle Graphics

Provide Graphic Decal Design, Printing, Installation, and Removal Services for the King County Sheriff’s Office (KCSO).

Government and Stakeholder Relations Services (Request for Proposals)

Provide strategic communications and government and stakeholder relations services to the Harborview Construction and Infrastructure Division.

Work Order Planning Services for King County International Airport - (Request for Proposal)