Contractor Insurance California — What CSLB Requires (2026)

The Contractors State License Board (CSLB) regulates over 280,000 licensed contractors in California. Whether you are a general contractor (B license), a plumber (C-36), an electrician (C-10), a landscaper (C-27), or any other specialty, you need insurance to get and keep your license.

But "contractor insurance" is not one thing. It is a combination of coverages, each serving a different purpose. Some are legally required by CSLB. Others are not technically mandated by the state but are required by every general contractor and property owner before they let you on a job site. And one major change — SB 216 — is about to make workers compensation mandatory for all contractors, including sole proprietors.

This guide covers everything you need in 2026.

What CSLB actually requires

1. Contractor license bond — $25,000 (required)

Every licensed contractor in California must post a $25,000 contractor license bond with CSLB. This is a surety bond, not insurance. Here is the difference:

• Insurance protects you. If something goes wrong, the insurance company pays and you do not owe them back.
• A bond protects the consumer. If you fail to complete a job or violate contractor laws, the consumer can file a claim against your bond. The surety company pays the consumer — and then you owe the surety company back.

You do not pay the full $25,000 upfront. You pay an annual premium to a surety company, typically $100 to $500 per year depending on your credit score and claim history. Good credit means lower premiums.

Via Rapida Services writes contractor license bonds. Call 209-670-1556 for a quote — we can often have the bond in place within 24-48 hours.

2. Workers compensation (required if you have employees)

If you have any employees — even one part-time laborer — California law requires workers compensation insurance. There are no exceptions for construction trades. In fact, CSLB is particularly aggressive about enforcing workers comp compliance for contractors.

What happens if you do not have it:

• CSLB can suspend or revoke your license
• The state can issue a stop-work order on your jobs
• Penalties of up to $100,000 per violation
• Criminal misdemeanor charges
• Personal liability for all employee injuries

Currently, sole proprietors with no employees can file a Certificate of Workers Compensation Insurance or Exemption with CSLB. If you are truly a one-person operation with no helpers, subs, or day laborers, you can claim the exemption.

But that is changing.

3. SB 216 — the game changer for sole proprietors

SB 216 is phasing in mandatory workers compensation for ALL licensed contractors in California, including sole proprietors, by 2028. This means even if you work alone, you will need to carry workers comp on yourself.

Why this matters:

• If you are a sole proprietor today and using the exemption, you need to budget for workers comp before 2028
• Workers comp for a sole proprietor contractor typically costs $2,000 to $5,000 per year depending on your trade classification
• High-risk trades (roofing, framing, demolition) pay more than low-risk trades (painting, finish carpentry, landscaping)

Do not wait until 2028 to figure this out. Start getting quotes now so you know what it will cost and can price your jobs accordingly.

What CSLB does not require but you still need

General liability insurance

CSLB does not technically require general liability insurance. But here is reality: you cannot work without it.

Every general contractor, property manager, and commercial property owner in California requires subcontractors to carry general liability insurance with minimum limits of $1,000,000 per occurrence / $2,000,000 aggregate. If you do not have GL, you do not get the job. Period.

What GL covers for contractors:

• Property damage: You accidentally damage a client's property, neighboring property, or existing structures
• Bodily injury: Someone is injured because of your work (a homeowner trips over your materials, a passerby is hit by debris)
• Completed operations: A project you finished 6 months ago has a defect that causes damage or injury
• Products liability: Materials you installed fail and cause damage

Typical cost: $1,500 to $4,000 per year depending on your trade, annual revenue, and coverage limits.

Commercial auto insurance

If you drive a truck, van, or any vehicle for work — hauling tools, materials, trailers, or driving to job sites — your personal auto insurance does not cover it. The commercial use exclusion in every personal auto policy means your claim gets denied if you are on the way to or from a job.

You need commercial auto insurance. Typical cost: $1,500 to $3,500 per year per vehicle.

Inland marine / tools and equipment

Your tools get stolen off your truck. Your generator breaks on the job site. Your equipment trailer is hit while parked. Inland marine insurance covers your tools, equipment, and materials in transit or at job sites. Typical cost: $300 to $1,200 per year depending on the value of equipment you want covered.

What does a complete contractor insurance package cost?

These ranges are wide because trades vary dramatically. A landscaper with one truck and no employees pays far less than a roofing company with 5 employees and 3 vehicles. The only way to know your actual cost is to get a quote based on your specific operation.

How to get your insurance set up — step by step

1. Know your CSLB license classification. Your trade classification (B, C-10, C-27, C-36, etc.) determines your insurance rates because each classification has a different risk profile.
2. Gather your information. Annual revenue (or projected revenue if new), number of employees, total payroll, vehicle information, and value of tools/equipment.
3. Call us at 209-670-1556. We quote multiple carriers including Hartford — one of the largest commercial insurers in the country. We find the best combination of coverage and price for your specific operation.
4. Get your certificates. Once bound, we issue certificates of insurance you can provide to GCs, property owners, and CSLB. We can add additional insureds as needed for specific jobs.
5. File your bond with CSLB. We handle the paperwork to get your contractor license bond on file with the Contractors State License Board.

Common trade classifications and typical costs

Here is what we typically see for common contractor trades in the Stockton / San Jose / San Rafael area:

Workers comp rates are per $100 of payroll. So if you are a C-10 electrician paying yourself $80,000/year, your workers comp at $8 per $100 would be approximately $6,400/year.

Why personal auto does not cover your work vehicle

This is one of the most expensive mistakes contractors make. You drive your F-150 to a job site every day with $15,000 worth of tools in the bed and a trailer behind you. You think your personal auto covers you because the truck is in your name and you have "full coverage."

It does not. Every personal auto policy has a commercial use exclusion. When you file a claim and the adjuster asks what you were doing, you will have to say you were going to a job. The claim gets denied. Now you are personally liable for the other driver's injuries, their vehicle damage, your truck repair, your tools, and the trailer. That is easily $50,000-$100,000+.

Commercial auto costs $1,500-$3,500/year. Driving uninsured as a contractor is a risk that will eventually catch up with you.

Frequently Asked Questions