Most Arizona contractors think they’re covered the moment they sign a policy. They’re not wrong, exactly. But they’re often not as protected as they believe.

The gaps usually surface when a claim gets denied. Or when a client cancels a contract because your certificate doesn’t match their requirements. Here are five coverage mistakes Arizona contractors make, and what you can do about each one.

Skipping the Fine Print on Subcontractor Liability

General contractor insurance in Arizona typically covers your own crew and your own work. It doesn’t automatically extend to every subcontractor you bring onto a job. That’s the part most contractors miss when setting up coverage. Checking out general contractor insurance in Arizona helps make the picture concrete.

Your general liability policy has a section on subcontractor liability. Read it carefully. Some policies exclude damage caused by subs entirely, while others require you to collect certificates of insurance from each sub before work begins. If a subcontractor causes a property damage incident and you haven’t verified their coverage, the claim could land on your policy instead.

The fix is straightforward: get a certificate of insurance from every sub before they set foot on your job site; confirm their policy limits meet your project requirements; and check that their general liability is active, not expired.

Underestimating the Real Cost of Workers’ Comp Gaps

Workers’ compensation is mandatory in Arizona for most employers with at least one employee, according to the Arizona Workers’ Compensation Act. But many contractors misclassify workers as independent contractors to avoid the expense. That’s risky, legally and financially.

If a worker gets hurt on your job and they’re misclassified, the Arizona Industrial Commission can hold you personally liable for their medical bills and lost wages. Those costs can easily run into the tens of thousands of dollars. Then add legal fees on top.

Sole proprietors and true owner-operators do have options. You might be able to exclude yourself from workers’ comp if you have no employees. But if anyone works for you regularly, gets paid by the hour, or uses your tools and equipment, Arizona law likely treats them as an employee. It’s worth getting clarification on this point.

Confusing General Liability With Builder’s Risk

General liability and builder’s risk are two separate products. They cover different things. Here’s the issue: plenty of contractors set up one and assume it handles both. That assumption costs money on active job sites.

General liability covers third-party bodily injury and property damage. Someone walks onto your site and gets hurt? That’s where your GL policy responds. Builder’s risk, by contrast, covers the structure itself while it’s under construction; materials on site; the partially built frame; temporary structures; all of that falls under builder’s risk, not GL.

Say a fire destroys a framed addition before the roof goes on. Your general liability policy won’t pay to rebuild that structure. A builder’s risk policy would. Talk to your broker about whether each project you take on needs a separate builder’s risk policy or whether a blanket policy makes more sense for your work volume.

Missing the Additional Insured Requirement on Certificates

Property owners, general contractors, and developers almost always require you to name them as additional insured on your policy. It’s a standard contract clause. But many contractors sign contracts, start work, and never update their policy to reflect this requirement.

The certificate you hand over needs to list the client as an additional insured. That’s not automatic. You have to request the endorsement from your carrier. Hand over a certificate that doesn’t include the additional insured language your client specified? They’ve got every right to stop work until the paperwork is corrected.

Some clients also require “main and noncontributory” wording on the certificate, which means your policy pays first before any other coverage kicks in. Miss that language, and you’ll face a contract dispute, not just a paperwork correction. Set a process to review every contract’s insurance requirements before you bind coverage. It only takes a few minutes up front.

Letting Coverage Lapse Between Projects

Arizona contractors often treat insurance as a project-by-project expense. They cancel a policy after a big job wraps up and plan to reinstate it before the next one starts. The problem is what happens in the gap.

A lapse in coverage affects more than just your protection during business interruptions. Many carriers treat a lapsed policy as a new application. That means higher premiums, possible declinations, and stricter terms. Some Arizona licensing boards also track active coverage; a lapse can flag your license status at the worst possible time.

And here’s what Arizona contractors miss most often: the “completed operations” exposure. Your general liability doesn’t just cover incidents during the project. It covers claims that arise after the work is done if someone alleges the completed work caused harm. A lapse in your policy can leave that window unprotected.

Keep coverage continuous. The cost of a short-term maintenance policy between projects is far less than the cost of a denied claim or a licensing issue.

Conclusion

Coverage gaps aren’t usually the result of carelessness. They’re the result of setting up a policy once and never revisiting it as your business grows or your project types change. Arizona’s construction environment moves fast. Your insurance needs to keep pace. Review your policy terms every year; check every contract’s insurance requirements before signing; and don’t let administrative tasks like certificates and endorsements slip through the cracks.