State Guides
How to Become a Licensed Electrician in California: The C-10 License Guide
April 30, 2026
What Is the C-10 Electrical Contractor License — and Why Does It Matter?
If you want to run your own electrical contracting business in California, you need a C-10 Electrical Contractor license issued by the California Contractors State License Board (CSLB). This is not optional. Working as an unlicensed electrical contractor on jobs over $500 (combined labor and materials) is illegal in California and can result in fines, stop-work orders, and being barred from future licensing.
The C-10 is a specialty contractor license specifically for electrical work — everything from residential wiring to commercial panel upgrades to industrial control systems. It does not cover low-voltage work (that falls under the C-7 license), but it covers the vast majority of electrical contracting most electricians care about.
This guide walks you through exactly what you need to qualify, what the exam looks like, and what the license is actually worth once you have it.
Who Qualifies: Experience and Education Requirements
The CSLB is not handing these out to anyone who fills out a form. You need to demonstrate real, verifiable experience before you're eligible to sit for the exam.
The core requirement: Four years of journeyman-level experience in electrical work within the last ten years. That experience must be at the journey-level — meaning you were doing the actual hands-on electrical work, not just supervising or managing from the sidelines. Apprentice-level work can count, but the CSLB caps it: no more than half of your four years can come from apprenticeship.
Here's what that means practically:
- If you completed a four- or five-year IBEW or non-union apprenticeship, you likely meet the requirement with some journeyman work added.
- If you've been a licensed journeyman electrician for four or more years, you're probably eligible right now.
- If you have an electrical engineering degree, you may be able to substitute some education for experience, but verify this directly with the CSLB — the rules are specific.
You'll need to list your employers and dates of employment when you apply, and the CSLB can contact them to verify. Don't pad your resume. They check.
Age requirement: You must be at least 18 years old.
Business entity requirement: You apply as a business entity (sole proprietor, LLC, corporation, or partnership). Every licensed contractor in California is associated with a Responsible Managing Employee (RME) or Responsible Managing Officer (RMO) — that's the person who passes the exam and takes legal responsibility for the license.
The CSLB Exam: What You're Actually Tested On
The C-10 licensing exam has two parts, and you need to pass both:
1. Trade Exam (C-10 Electrical)
This is the technical portion. Expect questions covering:
- National Electrical Code (NEC) — California adopts the NEC with state amendments
- California Electrical Code (CEC)
- Load calculations
- Conduit fill and wire sizing
- Grounding and bonding
- Motor circuits and controls
- Service entrance requirements
- OSHA safety standards
The exam is open-book for code references, but don't let that fool you — if you don't know where to look quickly, the open-book format doesn't help much. Most candidates spend weeks studying before sitting.
2. Law and Business Exam
This covers California contractor law, workers' compensation requirements, lien law, contract requirements, and CSLB rules. It's not glamorous, but it's mandatory — and failing it is more common than most people expect.
PSI Exams administers both tests on behalf of the CSLB. You schedule them separately or together. Each costs $60 to schedule. You can retake failed sections, but retake fees apply.
Passing score: 70% on each section.
Prep materials: The CSLB publishes exam study guides. Third-party prep courses exist and are worth considering if you've been out of the code book for a while or if trade math isn't your strong suit.
The Application Process: Step by Step
Here's the sequence, without the runaround:
Submit your CSLB application online or by mail. The initial application fee is $450 for a new license. Fees are updated periodically — confirm the current amount at cslb.ca.gov before you apply.
Provide experience verification. List your work history, employers, and supervising journeymen or foremen who can verify your time. The CSLB will mail verification forms to your listed references.
Live scan fingerprinting. California requires a background check. You'll submit fingerprints at an authorized Live Scan location. A criminal history doesn't automatically disqualify you, but certain convictions can — the CSLB reviews these case by case.
Wait for exam eligibility notice. Once your application is approved, you'll receive a notice that you're cleared to schedule your exams. This can take 3–6 months depending on CSLB processing volume. Plan accordingly.
Pass both exam sections.
Submit proof of insurance and bond. Before your license activates, you need:
- A $25,000 contractor's bond (this is a surety bond, not insurance — it protects consumers)
- Workers' compensation insurance if you have employees; if you're a sole owner-operator with no employees, you can file an exemption
- General liability insurance is not required by the CSLB but is required by virtually every commercial client and general contractor you'll work with
License issued. Your C-10 license is valid for two years and must be renewed. Renewal requires 32 hours of continuing education for licensees who have held a license for fewer than five years; the requirement changes after that, so check current CSLB rules.
Total timeline from application to active license: Realistically, plan for 6–12 months start to finish, accounting for CSLB processing time, exam scheduling, and insurance setup.
What the C-10 License Is Worth in California
Let's be direct about the money, because that's why most people are reading this.
As an employee journeyman electrician in California, the median annual wage is $76,540 per year, according to the Bureau of Labor Statistics OEWS. That's already well above the national median of $62,350 for electricians.
But the C-10 license changes your ceiling. As a licensed electrical contractor, you're no longer trading hours for a set wage — you're setting your own rates, taking on your own jobs, and keeping the margin between what you charge and what the work costs you. Electrical contractors in California routinely bill $85–$150+ per hour for labor on residential work and higher on commercial projects, though your net depends heavily on overhead, insurance costs, and how well you manage jobs.
The license also opens doors that are closed to unlicensed operators:
- You can pull permits in your own name
- You can bid on public works projects (with additional prevailing wage requirements)
- You can hire apprentices and journeymen under your license
- You can subcontract from general contractors who require licensed subs
None of that is available to someone working under someone else's license or operating without one.
Common Mistakes That Delay or Kill Your Application
A few things trip up applicants regularly:
Underestimating experience documentation. If your former employer is out of business or won't respond to CSLB verification requests, your application stalls. Start gathering contact information for supervisors who can vouch for your hours before you apply.
Skipping exam prep. The NEC is a complex document. Plenty of experienced electricians have failed the trade exam on the first attempt because they assumed field experience would carry them through a code-heavy written test. It doesn't always work that way.
Not having insurance lined up before you need it. Some applicants pass the exam and then spend weeks scrambling to get bonded and insured. Get quotes lined up before you pass so you're not sitting on a passed exam waiting for paperwork.
Letting someone else hold your license (RMO arrangements). Some contractors set up arrangements where a licensed individual serves as the RMO for a business they don't actually control. The CSLB has cracked down on these arrangements. If you're going to run an electrical business, put in the work to get your own license.
FAQ
How long does it take to get a C-10 license in California?
From the time you submit your application to the time your license is active, expect 6–12 months. The CSLB's processing time for applications is typically 3–6 months, and that's before you schedule and sit for the exams. If your experience verification hits snags, it can take longer. Apply before you think you're ready to start your business, not after.
Can I use my California journeyman electrician card to meet the C-10 experience requirement?
Yes, holding a California General Electrician certification (the state journeyman card) demonstrates journey-level competency and can support your experience documentation, but you still need to show four years of verifiable work history at that level. The card itself doesn't substitute for the years — it validates the type of work you were doing during those years.
Do I need a C-10 license to do electrical work as an employee in California?
No. The C-10 is a contractor license for businesses that perform electrical work. If you're employed by a licensed electrical contractor and working under their license, you need a California General Electrician certification (or be enrolled in a state-approved apprenticeship), but not a C-10. The C-10 is required when you want to contract directly with customers or operate your own electrical business.