King County government contracts, bids & RFPs
State / local / other government buyer · 19 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.
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King County contract activity
A current snapshot based on 19 listings shown on this page. Counts update with the directory.
- King County, WA19
Deadline outlook
- Next 30 days
- 18
- Later
- 1
- Open / rolling
- 0
Most represented buyers
- King County, WA19
18 of the listings shown were posted in the last 30 days. King County, WA contributes the largest share (19). King County, WA is the most represented buyer in this snapshot.
Open opportunities
- Central Base, Atlantic Base & Non-Revenue UST Improvements and AST InstallationKing County, WA
The work under this Contract includes, but is not limited to, installation of aboveground storage tanks (ASTs); cleaning, inspection, repair and lining of existing fuel underground storage tanks (USTs), including upgrade of associated fluid level monitoring/leak detection system; permanent closure-in-place of existing non-fuel USTs; installation of supplementary sacrificial anodes for the cathodic protection of existing steel underground storage tanks; and concrete removal, excavation and…
MoreDue Sep 9, 2026Posted Aug 31, 2026 - Central Base, Atlantic Base & Non-Revenue UST Improvements and AST InstallationKing County, WA
The work under this Contract includes, but is not limited to, installation of aboveground storage tanks (ASTs); cleaning, inspection, repair and lining of existing fuel underground storage tanks (USTs), including upgrade of associated fluid level monitoring/leak detection system; permanent closure-in-place of existing non-fuel USTs; installation of supplementary sacrificial anodes for the cathodic protection of existing steel underground storage tanks; and concrete removal, excavation and…
MoreDue Sep 9, 2026Posted Aug 14, 2026 - Permitting Abatement and Hazardous Materials Services Work OrderKing County, WA
Work of the Project includes labor, materials, tools, equipment, supplies, incidentals, testing, transportation, services, subcontractor coordination, overhead to perform incidental testing, monitoring, inspection and abatement of hazardous materials at various sites and superintendence to perform emergency and code abatement services at project sites authorized by the Owner. This work may also include any and all phases of incident response, including but not limited to: immediate mitigation…
MoreDue Sep 10, 2026Posted Sep 3, 2026 - Work Order Survey & Aerial Mapping Services for Water & Land Resources DivisionKing County, WA
The purpose of this contract is to provide surveying and aerial mapping and related services on a work order basis for King County (“County”). The exact disciplines required and the amount of work for each discipline have not been determined. The Consultant should be capable of adding disciplines expeditiously, as necessary, to meet the needs of specific work orders. There is no guarantee that all services in this Scope of Work will be used.
MoreDue Sep 10, 2026Posted Sep 1, 2026 - Work Order Survey & Aerial Mapping Services for Water & Land Resources DivisionKing County, WA
The purpose of this contract is to provide surveying and aerial mapping and related services on a work order basis for King County (“County”). The exact disciplines required and the amount of work for each discipline have not been determined. The Consultant should be capable of adding disciplines expeditiously, as necessary, to meet the needs of specific work orders. There is no guarantee that all services in this Scope of Work will be used.
MoreDue Sep 10, 2026Posted Aug 11, 2026 - ITB-GAS AND WELDING PRODUCTS, EQUIPMENT, AND ITEMSKing County, WA
King County is soliciting bids from qualified suppliers to establish a contract for Gas and Welding Products, Equipment & Related items.
MoreDue Sep 10, 2026Posted Jul 27, 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. To attend the pre-proposal conference on August 26, 2026 at 1:00PM PT, see information in the RFP document.
MoreDue Sep 11, 2026Posted Aug 19, 2026 - RFI-King County Metro Access and Metro Flex ProgramsKing County, WA
King County is issuing this Request for Information (RFI) to inform the development of multiple formal Request for Proposals (RFP) starting in 2027 for Access (paratransit) and Metro Flex (microtransit) management and operations, with the option to expand to support other Metro programs in the future.
MoreDue Sep 11, 2026Posted Aug 21, 2026 - Work Order Engineering Services for Solid Waste Landfill SystemsKing County, WA
The purpose of this contract is to provide engineering and related services on a work order basis for King County Department of Natural Resources and Parks, Solid Waste Division (“County”). The exact disciplines required and the amount of work for each discipline have not been determined. The Consultant should be capable of adding disciplines expeditiously, as necessary, to meet the needs of specific work orders. There is no guarantee that all services in this Scope of Work will be used.
MoreDue Sep 15, 2026Posted Aug 17, 2026 - RFQ Organizational Development Consulting Services - SupplementalKing County, WA
King County is soliciting submittals from interested and qualified firms to provide organizational development consulting services.
MoreDue Sep 15, 2026Posted Aug 11, 2026 - RFQ Organizational Development Consulting Services - SupplementalKing County, WA
King County is soliciting submittals from interested and qualified firms to provide organizational development consulting services.
MoreDue Sep 15, 2026Posted Sep 2, 2026 - ITB-BAE Parts and ToolsKing County, WA
King County Metro is soliciting bids to establish a contract for the purchase and delivery of BAE‑manufactured tools, components, and replacement parts required for the maintenance of BAE hybrid propulsion systems installed across Metro’s bus fleet. The Contractor must supply genuine OEM BAE Systems parts, tools, sub‑assemblies, and associated hardware to support ongoing maintenance, repairs, and operational reliability of Metro’s hybrid‑electric and electric buses. All furnished components…
MoreDue Sep 16, 2026Posted Sep 4, 2026 - ITB-BAE Parts and ToolsKing County, WA
King County Metro is soliciting bids to establish a contract for the purchase and delivery of BAE‑manufactured tools, components, and replacement parts required for the maintenance of BAE hybrid propulsion systems installed across Metro’s bus fleet. The Contractor must supply genuine OEM BAE Systems parts, tools, sub‑assemblies, and associated hardware to support ongoing maintenance, repairs, and operational reliability of Metro’s hybrid‑electric and electric buses. All furnished components…
MoreDue Sep 16, 2026Posted Aug 14, 2026 - ITB-BAE Parts and ToolsKing County, WA
King County Metro is soliciting bids to establish a contract for the purchase and delivery of BAE‑manufactured tools, components, and replacement parts required for the maintenance of BAE hybrid propulsion systems installed across Metro’s bus fleet. The Contractor must supply genuine OEM BAE Systems parts, tools, sub‑assemblies, and associated hardware to support ongoing maintenance, repairs, and operational reliability of Metro’s hybrid‑electric and electric buses. All furnished components…
MoreDue Sep 16, 2026Posted Aug 20, 2026 - KCSO Uniforms & Related ItemsKing County, WA
King County is soliciting bids from interested and qualified firms to provide uniforms and related items for the King County Sheriff’s Office. The purpose of this Invitation to Bid is to establish a contract to provide goods or services on an as needed basis. Any quantities listed herein are for bidding evaluation purposes only and represent King County’s estimated annual requirements. The County will be neither obligated nor restricted to the quantities or locations indicated.
MoreDue Sep 23, 2026Posted Aug 26, 2026 - RFP-Infant Mental Health ConsultantKing County, WA
Public Health–Seattle & King County (PHSKC) is requesting applications from Infant Mental Health experts to provide consultation services.
MoreDue Sep 30, 2026Posted Aug 28, 2026 - A&E for the Renton Maintenance Facility Building C HVAC and Roof ReplacementKing County, WA
The purpose of this contract is to provide engineering and related services to King County Department of Local Services, Road Services Division (“County”) to identify and evaluate alternatives for a complete HVAC and roof replacement for Building C at the Renton Maintenance Facility for the C Building Renovation project.
MoreDue Oct 1, 2026Posted Sep 4, 2026 - A&E for the Renton Maintenance Facility Building C HVAC and Roof ReplacementKing County, WA
The purpose of this contract is to provide engineering and related services to King County Department of Local Services, Road Services Division (“County”) to identify and evaluate alternatives for a complete HVAC and roof replacement for Building C at the Renton Maintenance Facility for the C Building Renovation project.
MoreDue Oct 1, 2026Posted Sep 2, 2026 - Heavy Civil GC/CM Services for STP Treatment and Electrical Improvements (TEI)King County, WA
The Heavy Civil GC/CM Project includes preconstruction and construction services for the South Treatment Plant (STP) Treatment and Electrical Improvements (TEI) Project. The Project is intended to provide essential upgrades to preliminary treatment, secondary treatment, odor control systems, and electrical systems across the plant.
MoreDue Oct 13, 2026Posted Aug 19, 2026
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