General Contractor Licensing in Washington

Washington General Contractor License Verification

In Washington State, individuals and businesses operating as general contractors are required to register with the Washington State Department of Labor & Industries (L&I), which serves as the primary governing board for contractor compliance. Washington is considered a "registration" state for general contractors, meaning there is no state-mandated trade exam or prior experience requirement for the general contractor registration itself. However, specific trades like electrical or plumbing work require separate individual licensing. General contractors possess the flexibility to perform most types of construction work and are permitted to hire subcontractors across various specialties. Conversely, specialty contractors are restricted to work within their registered trade and cannot subcontract work.

To register as a general contractor in Washington, the process includes several key steps. First, your business must be registered with the Washington State Department of Revenue to acquire a Unified Business Identifier (UBI) number. An Application for Contractor Registration must then be completed, signed in front of a notary public, and submitted to L&I. As of early 2026, the application fee for contractor registration is $141.10. Contractor registrations must be renewed every two years, a process that can often be completed online. Verifying a contractor's active registration, bond, and insurance status is readily available through L&I's online tools.

Insurance and Bonding Mandates

Compliance with Washington's insurance and bonding mandates is critical for all general contractors. As of July 1, 2024, general contractors are required to obtain and maintain a continuous contractor surety bond in the amount of $30,000. This bond serves as a financial guarantee, protecting consumers against financial losses resulting from a contractor's failure to meet contractual obligations, causing damages, or not paying for materials and labor.

In addition to the surety bond, general liability insurance is mandatory. Contractors must carry a minimum of $200,000 in public liability coverage and $50,000 in property damage coverage, or a combined single limit of $250,000. The Washington State Department of Labor & Industries must be listed as a certificate holder on your general liability insurance policy. For businesses with employees, Washington State operates a monopolistic state-managed workers' compensation system. All employers are required to register with L&I for industrial insurance and contribute premiums to the state fund. Sole proprietors or partners without employees have the option for workers' compensation coverage through L&I, although it is not mandatory.

Permitting and Local Regulations

While contractor registration and insurance are managed at the state level by L&I, building permits and adherence to specific building codes are primarily handled by local city or county jurisdictions. Washington State enforces a comprehensive statewide building code, known as the Washington State Building Code, which is based on International Code Council (ICC) guidelines, supplemented by state-specific amendments. The Washington State Building Code Council (SBCC) is responsible for overseeing these code adoptions and amendments.

General contractors must be aware that many local municipalities may implement their own amendments or additional requirements to the statewide code. Therefore, it is crucial to verify specific permitting, zoning, and regulatory requirements with the local building department where a project is located. Permits are typically required for new construction, significant alterations, major renovations, structural modifications, and new electrical, plumbing, or mechanical installations.

Official Washington Resources

For detailed information and to ensure ongoing compliance, general contractors should refer to the following official Washington State resources:

Washington State Department of Labor & Industries (L&I): https://www.lni.wa.gov/

L&I - Register as a Contractor: https://www.lni.wa.gov/licensing-permits/contractors/register-as-a-contractor/

L&I - Verify a Contractor, Tradesperson or Business: https://www.lni.wa.gov/licensing-permits/contractors/verify-a-contractor-tradesperson-or-business/

Washington State Building Code Council (SBCC): https://sbcc.wa.gov/

Directory of General Contractor contractors serving Washington