How to Get Your C-10 Electrical Contractor License in California
Getting a C-10 is not one event. It's a sequence, and the order matters. People stall out because they treat the exam as the finish line when it's really the middle of the process. Here's the whole path, start to license number, the way it actually runs through the Contractors State License Board (CSLB).
One note before the steps: everything here explains the process and the concepts to help you study and plan. Fees, forms, and timelines change, so confirm the current specifics directly with the CSLB at cslb.ca.gov before you send anything in.
Step 1: Confirm you qualify
The C-10 is a specialty classification for electrical contracting. To sit for it, you have to show CSLB at least four years of journey-level experience in the electrical trade, earned within the last ten years. Journey-level means you worked as a fully qualified electrician — not an apprentice, not a helper. Time as a foreman, supervisor, contractor, or owner-builder can also count.
The experience has to be real and provable. CSLB requires a qualified person to sign off on it: a licensed contractor, a certifying employer, a union rep, a building inspector, or someone else with direct knowledge of your work. Apprenticeship training and certain schooling can offset up to three of the four years, but you still need at least one year of hands-on journey-level work no matter what. For the full breakdown of who qualifies and what counts, read the complete C-10 requirements checklist.
Don't confuse the contractor license with the state electrician certification. Those are two different credentials from two different agencies. The difference between a C-10 license and electrician certification trips up a lot of people, and it's worth sorting out before you apply.
Step 2: File the application and pay the fee
You submit the Application for Original Contractor License to CSLB. This is where you name your qualifying individual — the person whose experience and exam results back the license. On a sole proprietorship that's usually you. On a corporation or LLC, it can be a qualifying employer or an officer who meets the experience requirement.
You'll list your business structure, the classification (C-10), and your experience history. An application fee is due at filing. CSLB reviews the application, checks your experience, and — assuming it's complete — mails you a notice that you're approved to test. Incomplete applications get kicked back, which is the single most common reason people lose weeks. Fill it out carefully.
Step 3: Pass the two exams
Once you're approved, CSLB schedules you at a testing center. There are two separate exams, and you need both:
| Exam | What it covers |
|---|---|
| Law and Business | Contract law, licensing rules, business finance, safety, employment, mechanic's liens, workers' comp |
| C-10 Trade | Electrical theory, the California Electrical Code, load calcs, conductor sizing, overcurrent protection, grounding and bonding, motors, and safety |
Both are closed-book, multiple-choice, and computer-based. The trade exam is the one built on the electrical code — the 2023 NEC as adopted into the 2025 California Electrical Code. Expect calculation-heavy questions: dwelling load calculations, conductor ampacity and wire sizing, and grounding versus bonding show up reliably and separate the people who studied from the people who winged it.
You don't have to pass both on the same day. Pass one and fail the other, and you re-sit only the one you failed (there's a re-exam fee each time). For a closer look at scoring and structure, see the C-10 exam format and passing score. The best preparation is working practice questions under a clock until the calculations are automatic — timed reps build the speed the exam demands.
Step 4: Post the contractor bond
Passing the exams does not get you a license. After you pass, CSLB sends a notice telling you what's left — and the big one is the contractor's bond.
Every California contractor has to file a licensed contractor bond with CSLB. If your qualifying individual is an employee rather than an owner, a separate bond of qualifying individual may also be required. Corporations carry the required corporate/LLC bond structure on top of that. The bond protects the public, not you — it's a financial guarantee, filed by a surety company, that you'll perform work lawfully.
You buy a bond from a surety; what you pay out of pocket is a premium based on your credit, not the full bond face amount. Bond amounts and requirements change, so confirm the current figure with CSLB. The full picture — plus workers' comp and general liability — is laid out in the C-10 bond and insurance requirements guide.
Step 5: Clear Live Scan (fingerprint background check)
Every applicant submits fingerprints through Live Scan so CSLB and the Department of Justice can run a criminal background check. You go to a Live Scan location, they capture your prints electronically, and the results route to CSLB. There's a processing fee plus the vendor's service fee.
A record doesn't automatically disqualify you, but you have to disclose honestly on the application. Undisclosed history found during the background check causes far more trouble than the history itself. Get this done promptly once you reach this stage — waiting on a background check is a classic reason a file sits idle.
Step 6: License issuance
When CSLB has your passing exam results, your filed bond, proof of workers' comp (or a valid exemption if you have no employees), and your cleared Live Scan, they issue the license and mail your number. That number is what makes you legal to contract, pull permits as the contractor of record, and bid work over the minor-work threshold. On what actually requires a license versus what doesn't, see whether you need a license for electrical work in California.
How long the whole thing takes
Plan for several months end to end. Application processing takes weeks. Then you're waiting on a test date, studying, and possibly re-sitting an exam. Bond and Live Scan add more time on top. The people who move fastest submit a clean application, start studying the day they mail it, and have their bond and fingerprints lined up so there's no scramble at the end. For a stage-by-stage timeline, read how long it takes to get a C-10 license.
The short version
Qualify on experience, file a clean application, pass both exams, post your bond, clear Live Scan, and the license follows. The two exams are where most candidates actually get stuck, and they're also the part you have the most control over. Learn the code, drill the calculations, and walk in ready. Everything else on this list is paperwork and patience.