Washington requires construction contractors to be registered with the Department of Labor and Industries, as either a general or specialty contractor, with a surety bond and liability insurance on file. Registration is straightforward to verify through L&I's Verify a Contractor tool, which shows registration status, bond and insurance information, the registration history, and whether there are lawsuits recorded against the bond.
That verification tool is genuinely informative and takes under a minute. Check the registration status, confirm the bond and insurance are current, and look at how long the registration has been in place — a very recent registration for a company claiming decades of experience is worth asking about.
L&I also enforces prevailing wage on public works, and public projects carry additional requirements including responsible bidder criteria. Those rules apply to school, city, and other public properties rather than to a private commercial lot.
Confirm the business entity through the Secretary of State, verify insurance directly with the carrier for your project dates, and check whether the city requires its own permits for the work — larger site projects in Washington frequently do because of stormwater review.
What a contractor license does not prove
L&I registration establishes bonding and insurance, not competence with saturated subgrade, permeable systems, or the stormwater review your project may need.
- That the proposed scope is the right fix for what is actually failing
- That the price is fair for the local market
- That drainage has been designed or corrected
- That the pavement section and thickness suit the traffic the property carries
- That the specified materials are appropriate for the site
- That the crew will show up when promised
- That workmanship will hold up past the first winter or summer
- That the company is financially stable enough to honor a warranty
Ask for a certificate of insurance sent directly from the carrier or agent rather than a copy forwarded by the contractor, confirm the general liability and workers’ compensation coverage is active on the dates of your work, and ask to be named as certificate holder so you are notified if the policy lapses.
Licensing requirements can turn on project value, scope of work, property location, and whether the job is public or private. City and county rules may add registration, permitting, or bonding requirements beyond anything required at the state level. Verify current requirements with the agency directly before contracting.