Washington
Washington is an SAA state and is not right-to-work — unions have strong density in construction. The Dept. of Labor and Industries (L&I) licenses electrical contractors and certifies electricians and plumbers statewide. HVAC contractors register through L&I. Washington uses the Uniform Plumbing Code (UPC) rather than the IPC.
Licensing boards.
| Trade | Board | Lookup |
|---|---|---|
| Electrician / Plumber / Contractor | Washington State Dept. of Labor and Industries (L&I) | Verify license → |
Source: state licensing boards. Links go directly to public licensee lookups where available.
Apprenticeship system.
Washington is a State Apprenticeship Agency (SAA) state — it runs its own apprenticeship system separately from the federal RAPIDS database. Rules, reporting, and enforcement happen at the state level. You may see different program standards than a neighboring RAPIDS state.
Browse by trade in Washington.
Each page covers the license board, real pay data, apprenticeship path, and state-specific gotchas for that trade in Washington.