Washington · Government contracting
Washington Government Contracts & Bid Opportunities
Last reviewed August 14, 2026 · How we source this
Washington posts state opportunities through a central vendor-notification system, with transportation work bid separately by WSDOT. Contractors must be registered with Labor & Industries to work, and the state's prevailing-wage rules — filed through L&I — are a key part of pricing any public job.
Where Washington opportunities are posted
- WEBS (Washington's Electronic Business Solution)
The Department of Enterprise Services' vendor registration and bid-notification system. Register to be notified of matching solicitations.
- WSDOT construction
The Washington State Department of Transportation bids highway and roadway construction through its own letting process.
Major buyers in Washington
- Washington State Department of Transportation (WSDOT) — Highways and roadways — civil and heavy construction trades.
- Department of Enterprise Services (DES) — State facilities and statewide contracts.
- Cities, counties, ports & school districts — Ports are notable public buyers in Washington, alongside cities, counties, and districts.
How to register as a vendor in Washington
Register in WEBS to receive state bid notifications, and register as a contractor with the Department of Labor & Industries (L&I) — construction work requires L&I registration with a bond and insurance. On public works you file a Statement of Intent and Affidavit of Wages Paid with L&I. Register separately with local jurisdictions and ports.
Good to know before you bid in Washington
- Washington requires prevailing wages on public works, administered by Labor & Industries (L&I); contractors file intent and affidavit of wages for each project.
- Contractor registration with L&I (including a bond and insurance) is required to perform construction work in the state.
- Port districts are significant public buyers in Washington.
- Bid, performance, and payment bonds are standard on public construction.
New to the process? Start with How to Win Government Contracts, and keep the glossary handy for any unfamiliar terms.
Washington government contracting FAQ
Where are Washington government contracts posted?
Where are Washington government contracts posted?
State solicitations are distributed through WEBS, the Department of Enterprise Services' vendor-notification system. WSDOT bids highway construction separately, and cities, counties, ports, and school districts post on their own portals.
Do I need to register with L&I to do public work in Washington?
Do I need to register with L&I to do public work in Washington?
Yes. Construction contractors must be registered with the Department of Labor & Industries (L&I), with a bond and insurance, and on public works you file a Statement of Intent and an Affidavit of Wages Paid with L&I to document prevailing wages.
Does Washington require prevailing wages?
Does Washington require prevailing wages?
Yes. Public-works projects require prevailing wages administered by L&I, documented through intent and affidavit filings. Price the correct rates into your bid before you submit.
Find Washington contracts that match your business
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