Contractor License Requirements in Washington
Browse licensing requirements for 30 contractor trades in Washington. Select a trade below to see detailed fees, exams, and step-by-step instructions.
General
Demolition Contractor
RequiredExcavation Contractor
RequiredGeneral Contractor
RequiredHome Inspector
RequiredRoofing Contractor
RequiredElectrical
Plumbing
HVAC
Structural
Specialty
Elevator Mechanic
RequiredFencing Contractor
Not RequiredFire Sprinkler Installer
RequiredFlooring Contractor
Not RequiredGlazier
Not RequiredInsulation Contractor
Not RequiredLandscaper
Not RequiredPainting Contractor
RequiredWell Driller
RequiredEnvironmental
Contractor Licensing in Washington
Washington State requires all contractors to register with the Department of Labor & Industries (L&I) before performing any construction work for hire. This registration requirement is comprehensive, covering virtually all types of construction, alteration, repair, and demolition work. Washington's system emphasizes financial accountability and consumer protection through mandatory bonding and insurance requirements.
To register as a contractor in Washington, applicants must post a surety bond of at least $12,000, obtain general liability insurance, secure a business license through the state's Business Licensing Service, and carry workers' compensation coverage through L&I's state fund or a self-insurance program. The state does not require a trade examination for general contractor registration, but the bonding and insurance requirements are strictly enforced.
Electricians in Washington are licensed separately through L&I's Electrical Program, which requires examinations, experience verification, and continuing education. Plumbers are also licensed through L&I. Washington is notable for its active enforcement against unregistered contractors, and L&I regularly conducts job site sweeps to identify and penalize contractors operating without proper registration. The state also maintains a robust online contractor verification system that consumers can use to check registration status.
Key Facts
- All contractors must register with the Department of Labor & Industries
- $12,000 minimum surety bond required for contractor registration
- General liability insurance and workers' compensation mandatory
- No trade examination required for general contractor registration
- Electricians and plumbers require separate L&I licenses with examinations
- Active enforcement program including job site sweeps for unregistered contractors
What Makes Washington Different
Washington's contractor registration system is distinguished by its emphasis on financial protection over trade qualification. Rather than testing whether a contractor knows their trade, the state ensures that every contractor has a $12,000 bond that consumers can claim against if work is deficient, along with mandatory insurance coverage. L&I's dual role as both the contractor registration authority and the administrator of the state workers' compensation fund gives it unusual leverage to enforce compliance. The state's online contractor verification tool is also one of the better-designed public-facing systems, making it easy for homeowners to verify a contractor's registration status, bond information, and insurance coverage before hiring.
Official Licensing Board
Washington State Department of Labor & Industries