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Commercial Auto
10 min readJanuary 28, 2025

Commercial Auto Insurance for Contractors: Fleet Coverage, Hired and Non-Owned, and California Requirements

Your personal auto policy won't cover your work truck. Learn what commercial auto covers, California requirements, and how to structure fleet coverage that protects your contracting business.

Why Personal Auto Policies Fall Short

Every week, a contractor calls us after an accident, only to discover their personal auto insurance won't cover the claim because they were using the vehicle for business. Personal auto policies contain a commercial use exclusion. If you're hauling materials, driving to job sites with tools in the bed, or transporting employees, your personal policy can deny the claim entirely.

A painting contractor in Costa Mesa rear-ended a BMW while pulling a paint sprayer behind his F-150. His personal auto carrier denied the claim, citing commercial use. He was personally responsible for $28,000 in vehicle damage and $15,000 in injury claims. A commercial auto policy would have handled the entire situation.

What Commercial Auto Covers

Liability Coverage

This pays for bodily injury and property damage you cause while operating a covered vehicle. California requires minimum liability of $15,000/$30,000/$5,000 for personal vehicles, but these minimums are woefully inadequate for commercial use.

Most contractors should carry at least $1 million combined single limit (CSL). Larger operations, especially those with heavy trucks or vehicles hauling equipment, should consider $2 million or more.

Physical Damage

Collision coverage pays to repair your vehicle after an accident regardless of fault. Comprehensive coverage handles theft, vandalism, weather damage, and other non-collision events.

Deductibles typically range from $500 to $2,500. Higher deductibles reduce premium but increase your out-of-pocket exposure. For newer trucks worth $50,000 or more, lower deductibles make financial sense.

Medical Payments

This covers medical expenses for you and your passengers, regardless of fault. It bridges the gap between an accident and workers' comp (which would cover employees injured on the job) and is particularly useful for sole proprietors who might not carry workers' comp.

Uninsured/Underinsured Motorist

Protects you when the at-fault driver has no insurance or insufficient coverage. California has a relatively high uninsured motorist rate, making this coverage especially important for contractors spending hours on the road every day.

Coverage Types by Vehicle Use

Owned Vehicles

Trucks, vans, and cars titled to your business go on your commercial auto policy as scheduled vehicles. Each vehicle is listed with its VIN, and coverage applies specifically to that unit.

Hired Vehicles

Rental trucks, temporary equipment haulers, and vehicles you lease for specific projects need hired auto coverage. If you rent a flatbed to move materials and cause an accident, hired auto provides liability coverage.

Non-Owned Vehicles

Employees using their personal vehicles for business purposes create liability for your company. If your superintendent drives their own truck to a job site meeting and hits someone on the way, your company could be sued. Non-owned auto coverage fills this gap.

California-Specific Requirements

Financial Responsibility Law

California requires all vehicles to carry proof of financial responsibility. For commercial vehicles, this means maintaining active commercial auto insurance and carrying proof in each vehicle.

CARB Compliance

The California Air Resources Board's Advanced Clean Fleets regulation affects contractors with larger fleets. While primarily an emissions rule, it impacts insurance as zero-emission vehicles enter your fleet. New EV trucks carry different risk profiles and may affect your commercial auto premium.

DOT Requirements

Vehicles over 10,001 pounds gross vehicle weight (GVW) or hauling hazardous materials require USDOT and Motor Carrier (MC) numbers. These vehicles need specific endorsements on your commercial auto policy and may require higher liability limits.

Fleet Pricing Factors

Vehicle Types and Use

Heavy trucks cost more to insure than pickups. Vehicles used for hauling cost more than those used for transportation only. High-value vehicles increase physical damage premiums.

Driver Records

Your drivers' MVR (Motor Vehicle Record) history significantly impacts pricing. DUIs, at-fault accidents, and moving violations increase premiums substantially. Some carriers won't write policies if drivers have recent major violations.

Radius of Operation

Contractors working within a 50-mile radius generally pay less than those covering a 200-mile territory. Interstate operations trigger additional regulatory and insurance requirements.

Annual Mileage

Higher mileage means more exposure. Carriers factor estimated annual mileage for each vehicle into their pricing.

Fleet Management Best Practices

Driver Qualification

Establish minimum standards for anyone driving company vehicles. Pull MVR reports annually. Set clear policies on acceptable violation history. Consider requiring defensive driving courses for all new drivers.

Vehicle Maintenance

Regular maintenance records demonstrate responsible fleet management. Carriers may offer discounts for documented maintenance programs. More importantly, well-maintained vehicles have fewer accidents caused by mechanical failure.

GPS and Telematics

Fleet tracking systems provide data on driver behavior including speed, hard braking, and route efficiency. Some carriers offer premium credits for telematics adoption. Beyond insurance, the data helps manage fuel costs and employee accountability.

Accident Reporting Procedures

Train every driver on post-accident protocols. Exchange information, document the scene with photos, report to your agent within 24 hours, and never admit fault at the scene. Quick reporting allows your carrier to investigate while evidence is fresh.

The Nuclear Verdict Problem

California leads the nation in "nuclear verdicts" in trucking and auto liability cases. Jury awards exceeding $10 million are no longer unusual in cases involving commercial vehicles. A contractor with a $1 million auto liability limit faces personal exposure when verdicts exceed that amount.

Contractors with multiple vehicles or heavy trucks should seriously consider umbrella coverage that extends over their commercial auto policy. A $5 million umbrella costs a fraction of the protection it provides.

Combining Auto with Your Insurance Program

Commercial auto works best when integrated with your other business coverages. Bundling auto with GL and property through the same carrier typically saves 10 to 15 percent. Your umbrella policy should sit over both your GL and auto to provide seamless excess coverage.

Common Questions

Can my employees drive company trucks home?

Yes, as long as your commercial auto policy covers personal use. Some policies restrict vehicles to business use only. Check your policy and set clear employee expectations.

Do I need commercial plates for my work truck?

If you use the vehicle primarily for business, yes. California requires commercial registration for vehicles used in commerce. Your insurance must match the vehicle's registration type.

What about trailers?

Utility trailers, equipment trailers, and enclosed trailers should be listed on your commercial auto policy. Liability follows the towing vehicle, but physical damage coverage for the trailer itself must be scheduled separately.

How do I insure a vehicle I just purchased?

Most commercial auto policies provide automatic coverage for newly acquired vehicles for 30 days. Notify your agent as soon as you purchase a new vehicle to add it permanently.

Published by Construction Pros Insurance Services. Founded by a former California tradesman with over a decade of construction experience. Meet our team →