Most contractors treat insurance as an afterthought. A subcontractor gets hurt, a client’s property gets damaged, or a vehicle gets rear-ended on the way to a project, and suddenly those coverage gaps turn into expensive problems. The right policies protect your registration, your contracts, and your livelihood before any of that happens.
Washington State has specific requirements for contractors, and the types of coverage you carry directly affect your ability to stay registered and win work. Here are five types of construction insurance that Washington contractors should understand.
General Liability Insurance
General liability is the foundation. It covers third-party bodily injury and property damage claims, meaning it can pay out if a visitor trips over your equipment at a job site or if your crew accidentally damages a client’s home.
In Washington, the Department of Labor & Industries (L&I) requires contractors to carry general liability insurance to register, and to keep it active to stay registered. To register, you need either $200,000 in public liability plus $50,000 in property damage, or a $250,000 combined single limit. L&I must be listed as the certificate holder, and the name on your policy must match your registration. You can confirm the current requirements on L&I’s contractor registration page, and see the statute at RCW 18.27.050.
Those figures are the state’s registration minimums, not necessarily what you should carry. Project owners, general contractors, and municipalities often require higher limits in their contracts, so check each bid’s insurance requirements. For anyone working with insurance for regulated construction projects in Washington, general liability is the first policy to get right, since almost every other requirement builds on top of it. Premiums depend on your trade, revenue, and claims history, so request quotes from licensed agents. Get this coverage in place before you bid on your first project.
A Note on Surety Bonds
Registration also requires a surety bond (or an assignment of savings), and this is not insurance. A bond is a three-party agreement among you, the surety company, and L&I. It exists to protect consumers and others with claims against your business, and if the surety pays a claim, you are generally expected to reimburse it. A bond does not protect you from losses the way an insurance policy does. The required amount depends on your contractor type, so confirm the current figure with L&I.
Workers’ Compensation Insurance
Washington handles workers’ compensation differently from most states. It is one of a few states with a state-run fund, administered by L&I, and most employers with employees report hours or payroll and pay premiums to that fund rather than buying a policy from a private insurer. Rates vary by risk classification, so a roofer’s rate will differ from a finish carpenter’s. Some employers that meet L&I’s requirements can self-insure instead.
Whether you are covered, exempt, or eligible for optional coverage depends on your business structure and whether you have workers. Sole proprietors and certain business owners may be exempt or may be able to buy optional coverage, but the rules depend on your situation. Once you hire employees, you will generally need to report them and pay premiums. Noncompliance can bring penalties, stop-work orders, and liability for injuries that occur without coverage, so verify your obligations with L&I.
The state fund generally provides medical care and wage replacement for injured workers, along with disability benefits where applicable. Construction ranks among the higher-risk industries, and even a minor fall or tool injury can be costly. Stay current with your reports, report hours accurately, and keep records, since L&I audits employers and underreporting can lead to penalties. See L&I’s workers’ compensation information for details specific to your business.
Commercial Auto Insurance
If you use a vehicle to haul tools, materials, or crew to job sites, a personal auto policy may not respond the way you expect. Many personal policies limit or exclude business use, and the outcome depends on your policy wording, how the vehicle is used, and the circumstances of the loss. A commercial auto policy is designed for business use and typically covers liability if your driver causes an accident. Physical damage to the vehicle is covered only if the relevant coverage is included in the policy.
Required liability limits depend on the vehicle, how it is used, and applicable state and federal rules, so don’t assume a single minimum applies to every work truck. Lenders who finance work vehicles often require collision and comprehensive coverage as well. If employees drive company vehicles, ask whether and how they are covered, including any hired or non-owned auto exposure.
A common mistake is assuming that registering a vehicle in your name means your personal policy will cover a business accident. Insurers can deny claims that fall under a business-use exclusion, and an at-fault accident could lead to a serious uninsured liability. Talk to a licensed agent about every vehicle you use, including rented or borrowed ones, and disclose how each is used.
Builder’s Risk Insurance
Builder’s risk generally covers a structure under construction and, depending on the policy, materials on site, against covered perils such as fire, theft, wind, and vandalism. It is project-specific, typically purchased for the duration of the build, and helps protect the value of work completed before the project is finished.
Some project owners and general contractors require builder’s risk, particularly on larger commercial jobs, and the contract usually says who must buy it. Covered perils, exclusions, and sublimits vary by policy. Water damage, theft of unsecured materials, and weather-related losses may be limited or excluded, so read the terms carefully.
Builder’s risk is a property coverage and generally does not cover worker injuries or liability claims. Limits should reflect the project’s completed value. Coverage commonly ends at completion, occupancy, or the policy’s expiration date, depending on the terms, and some policies can be extended. Confirm the end date so there is no gap before handoff to the owner.
Tools and Equipment Coverage
Your tools and equipment are your business. General liability generally won’t pay to replace your own stolen compressors or power tools, and commercial auto typically excludes equipment carried in a trailer or stored on site unless endorsed. Tools and equipment coverage, often written as inland marine insurance, can fill that gap by protecting your gear against theft, loss, and damage at your shop, in transit, or at a job site, subject to the policy’s terms.
For contractors working across multiple locations, this matters. Check whether your policy pays replacement cost or actual cash value, and set limits accordingly. Contractors often underestimate the total value of their tools until they add it up. Hand tools, power tools, compressors, generators, laser levels, trailers, and small equipment may qualify, and many policies let you schedule high-value items individually. Premiums depend on the total insured value, deductible, and claims history, so compare quotes against the cost of replacing a full set of tools after a theft.
Conclusion
Washington contractors face specific legal requirements and practical risks that make the right coverage important. To register, you need general liability insurance meeting L&I’s minimums plus a surety bond, and if you have employees, workers’ compensation generally runs through the state fund. Commercial auto, builder’s risk, and tools and equipment coverage address gaps that can leave your business exposed. Knowing what types of construction insurance Washington contractors need, and carrying adequate limits, helps protect your registration, your contracts, and your cash flow when something goes wrong on the job.
