C-10 Contractor Bond and Insurance Requirements Explained

Three different pieces of paper get lumped together as "bond and insurance," and plenty of new contractors can't tell you what any of them actually do. They're not the same thing, they don't protect the same person, and confusing them costs money — sometimes at renewal, sometimes in a lawsuit. Here's what each one is, who it protects, and why the CSLB or your customers will ask for it.

A quick note before the numbers: these amounts and rules are here to help you study and run a clean business, but figures change with new legislation. Always confirm the current bond amount and insurance rules with the CSLB at cslb.ca.gov before you file.

The contractor license bond: it doesn't protect you

Every active California license carries a contractor license bond — currently $25,000. This is the single most misunderstood requirement in the whole C-10 licensing process, so slow down here.

The bond does not protect you, your business, or your equipment. It protects consumers and the public from license-law violations — shoddy work, walking off a job, failing to pay certain claimants. A surety bond is a three-party deal, and knowing the three parties is a classic exam point:

Now the part that surprises people. If a customer files a valid claim and the surety pays out, you pay the surety back. Every dollar. A bond is not insurance — it's a financial guarantee of your conduct, and you're on the hook to reimburse it. Insurance is a two-party arrangement where the insurer absorbs the loss. A bond makes the surety whole and then comes to collect from you.

Bond amount vs. premium — don't mix these up

This trips up first-timers constantly. The bond amount — $25,000 — is the ceiling of coverage, the most the surety would ever pay on claims. It is not what you hand over to get the bond.

What you actually pay is the premium: a much smaller annual fee to purchase the bond, priced mostly on your personal credit. Strong credit means a low premium; rough credit means a higher one, and in tough cases a surety may want collateral. Think of the premium the way you think of an insurance premium — a recurring cost of staying licensed — while the bond amount is just the size of the guarantee behind you. Get a couple of quotes; premiums vary between sureties. The bond runs alongside the application and exam fees as an ongoing cost of doing business, not a one-time charge.

The related bonds

Two more bonds come up depending on how you're licensed:

• Bond of Qualifying Individual — $25,000. Required when your qualifier is an RME, or an RMO who owns less than 10% of the corporation's voting stock. An RMO who owns 10% or more is exempt.
• LLC Employee/Worker Bond — $100,000. Every LLC contractor carries this, on top of the $25,000 license bond. That's $125,000 in bonds before an LLC even opens for business.

Workers' compensation: required the day you hire

Workers' comp is required whenever you have employees. No employees, no requirement — for most trades. When you file your license with the CSLB you'll certify one of two things: you carry workers' comp, or you have no employees and are exempt.

Electrical work has one wrinkle worth flagging. Roofing contractors (C-39) must carry workers' comp even with no employees — a special rule for that high-injury trade. You're a C-10, so the standard "employees trigger it" rule applies to you, but if you ever add a roofing classification, that changes.

Don't play games with employee status. Misclassifying a worker as a "1099 subcontractor" to dodge comp is one of the fastest ways to draw a fine and jeopardize your license. If someone works under your direction, on your schedule, with your tools, the state generally treats them as an employee — and an uninsured injury can end your business. Comp is one of the core license requirements the CSLB actively checks, not a box you tick and forget.

General liability: the coverage that actually protects you

Here's the twist. The one policy that genuinely shields your business is the one California usually doesn't force you to carry.

General liability insurance covers third-party property damage and bodily injury caused by your work — you nick a gas line, a customer trips over your extension cord, a panel you installed causes a fire. For most sole owners and corporations, the state doesn't mandate a specific GL amount to hold the license. LLCs are the exception: an LLC applicant must carry $1,000,000 in liability insurance, with more required as membership grows.

So why carry it if the state doesn't demand it? Because the bond reimburses claimants and then bills you, workers' comp only covers your employees, and neither one pays when a homeowner's insurer comes after you for a $200,000 fire. General contractors won't let you on a commercial site without a certificate of insurance naming them as additional insured. Realistically, GL is the difference between a bad day and a bankrupt business — which is why it belongs in your plan from day one, right alongside how you structure and budget the business.

How the three stack up

Read that table twice. The bond protects the public and you repay it. Comp protects your crew. Only general liability protects the company you're building — and it's the one you have to choose to buy.

Get these lined up before you file, price the bond premium against your credit early, and don't let anyone tell you the $25,000 bond is your safety net. It's the public's. Your safety net is the liability policy you go out and buy on purpose. Learn the three-party bond structure and the comp rules cold — they show up on the Law and Business exam, and the surest way to lock them in is to drill practice questions and timed exams until the distinctions are automatic.