How to Become a California Contractor

Why become a California contractor?

California has more licensed contractors than any other state — more than 280,000 active CSLB licenses cover roughly 40 trades. Demand is steady because the state requires anyone performing work valued at $500 or more (labor and materials combined) to hold a CSLB license. That includes everything from new home construction to a fence repair, a kitchen remodel, or a solar install.

The licensing path isn't fast — you need 4 years of journey-level experience and you need to pass two exams. But it doesn't require a college degree, and once you're licensed, you can either work for someone else at higher pay or start your own business.

Step 1 — Choose your license class

California CSLB licenses come in three classifications:

• Class A — General Engineering. Highways, bridges, large excavation, dams, sewers. Big-money infrastructure work. Less than 10% of CA contractors hold Class A.
• Class B — General Building. Anyone who builds or modifies a structure using 2+ unrelated trades. This is the path for general home builders and remodel contractors. About 40% of CA contractors are Class B.
• Class C — Specialty. One specific trade. Most common: C-10 Electrical, C-36 Plumbing, C-39 Roofing, C-33 Painting, C-13 Fencing, C-27 Landscaping. About 50% of CA contractors are Class C.

Step 2 — Verify your 4 years of experience

Under Business and Professions Code §7068, you must have at least 4 years of journey-level, foreman, supervising employee, or contractor experience within the last 10 years. "Journey-level" means you've performed the work yourself — not just observed it.

Up to 3 years can be substituted with accredited trade school or a state-approved apprenticeship. So the minimum is 1 year of real on-the-job experience if you complete a full trade school program.

You'll need a former employer or qualifying party to sign a certification form attesting to your experience. CSLB audits roughly 10% of applications, so be honest.

Step 3 — Submit your CSLB application

Apply online or by mail. The non-refundable application fee is $450. You can only apply for one classification at a time. Submit:

• Completed CSLB Application for Original Contractor License
• $450 application fee
• Certification of work experience (signed by qualifier)
• Live Scan fingerprint receipt (Form BCIA 8016)
• If applying as a corporation/LLC: corporate documents

Step 4 — Pass two exams (Law & Business + Trade)

Both exams are at PSI testing centers. Both are 3.5 hours, 115 multiple-choice questions, computer-based, and you need 73% to pass. Results show immediately as PASS or FAIL.

The Law & Business exam is the same for every classification. It covers contracts, employment law, business finance, safety, and California-specific code. Available in English and Spanish at the testing center.

The Trade exam is specific to your classification (Class A general engineering, Class B general building, or the specific Class C-XX). Available in English only at most centers — translator requests take 4-6 weeks.

Step 5 — Get your contractor bond + initial license

After you pass both exams, CSLB mails instructions for:

• $25,000 contractor bond. Required of every active CSLB license. Cost varies by credit — most applicants pay $200-$400 per year.
• $200 initial license fee (paid to CSLB).
• Workers' compensation insurance — required if you have any employees (Labor Code §3700). Solo operators can submit an Exemption Form instead.

Step 6 — Start your first job

Two paths:

• Work for a licensed contractor. Higher hourly than journeyman rates, often $40-$80/hour for licensed help. Lower stress because you're not running the business.
• Start your own business. Higher ceiling — median is $65-$95K solo, but specialty trades can push $200K+. More risk: you handle estimates, billing, taxes, liability, and crew management.

Salary expectations

Earnings vary dramatically by trade and business model:

Ranges based on California Employment Development Department and BLS regional data. Top earners typically run small crews and specialize in commercial or high-end residential work.

Cost breakdown

• CSLB application fee — $450 (non-refundable)
• Live Scan fingerprints — $58
• Exam fee — $51.43 per exam × 2 = $102.86
• Initial license fee — $200 (paid after passing)
• $25,000 contractor bond — $200-$400/year
• Workers' comp (if you have employees) — varies
• Total cash outlay before first job: ~$700-$1,200

How to study for the Law & Business exam

Most candidates pass on their first try with 40-80 hours of focused study. The exam favors specific dollar amounts, time periods, and code citations — multiple-choice with one clearly correct answer.

The most effective study approach:

• Read the official CSLB Law and Business Study Guide (free PDF on cslb.ca.gov)
• Take practice tests on every topic — Contracts (21%), Employment (20%), Business Finance (15%), Safety (14%), Business Org (13%), Insurance & Liens (12%), and Public Works (5%)
• Focus extra time on Contracts + Employment — they're 41% of the exam combined
• Take a full-length mock exam under timed conditions (3.5 hours, 115 questions) before your real test

Frequently asked questions