California CSLB candidates typically face a Law & Business test plus at least one trade exam. Use our California practice exam flow to build speed on code-style questions, contract/admin scenarios, and the compliance topics that show up repeatedly. Exact blueprints vary by classification—confirm your CSLB bulletin before test day.
Last verified: June 2026 via Contractors State License Board. Official source: Contractors State License Board (CSLB).
The CSLB issues more than 40 license classifications. Every qualifier must pass the Law & Business exam plus at least one trade exam delivered by PSI (test-takers.psiexams.com/cacslb) and submit fingerprints, experience certificates, and a $25,000 contractor bond.
Coastal fog corrodes fasteners, Central Valley heat buckles membranes, mountain counties demand 200 psf snow loads, and the entire state sits on seismic faults. Expect to see wildfire-defensible space, seismic anchorage, waterproofing, and drought-era plumbing tasks woven into the question bank.
Official source: Contractors State License Board (CSLB)
Scope: Two or more unrelated trades framing and finishing most vertical construction statewide.
Testing: Trade exam covering CBC 2022 Chapters 4–11, OSHA safety, scheduling, and plan review plus the Law & Business exam.
Scope: Electrical systems 1000 volts or less, photovoltaic arrays, and EV infrastructure.
Testing: 200-minute trade exam referencing California Electrical Code 2022, Title 24 energy storage rules, and GO-95 clearance standards.
Scope: Potable water, drainage, and fuel gas piping statewide.
Testing: Trade exam based on California Plumbing Code 2022, CalGreen water budgets, and cross-connection control.
CSLB can add or remove classifications after review. Keep experience affidavits, project lists, and payroll records ready for random compliance audits.
PSI offers testing in nearly every metro plus remote online proctoring. After CSLB issues your Notice to Appear, schedule both exams, complete Live Scan fingerprints, and bring the notice plus two IDs to the test center.
| Licensing authority | Contractors State License Board (CSLB) |
|---|---|
| Governing law | California Business & Professions Code §§ 7065–7071.6, 7140 |
| Exams | Law & Business exam (~115 questions, ~3 hours) plus a Trade exam for your classification (Class A, B, B-2, or one of 41 C-specialties) |
| Exam vendor | PSI, under CSLB contract — 20+ California test centers |
| Passing score | CSLB uses a scaled cut score (roughly 72%); the C-61 Limited Specialty is the only class that waives the trade exam |
| Experience | 4 years of journey-level, foreman, supervising, or contractor experience within the last 10 years |
| Money | $450 application fee · $200/$350 initial license fee · $25,000 contractor bond · ~$51 exam fee paid to PSI |
| Deadlines | 18 months from application acceptance to pass both exams; 21-day wait to retake a failed exam |
Many applicants budget for one exam, but CSLB requires two — Law & Business plus a trade exam — and then mails a separate open-book Asbestos exam before the license issues. The Law & Business portion is identical across every classification, so it is the highest-leverage section to master first.
Verified sources: CSLB — Examination FAQ · CSLB — Public Information FAQ.
If you're licensing in a single trade rather than the California general contractor classification, the dedicated trade hub will get you to the right code book and exam structure faster.
Always confirm the exact editions and tab rules in your candidate bulletin before exam day. Editions can change between license cycles.
Use the All States hub to benchmark multi-state costs, then rely on CSLB's fee schedule for the official numbers.
The Law & Business exam blends mechanics lien law, workers' compensation, payroll taxes, safety, estimating, and contract requirements from the Business & Professions Code and California Code of Regulations.
Practice with our national Business & Law exam hub for cross-state baseline rules.
California does not use NASCLA. Every qualifier must pass CSLB's Law & Business exam and at least one California trade exam regardless of credentials held elsewhere.
More: National NASCLA exam guide and our in-depth NASCLA Accredited Exam study walkthrough.
Because coastal fog corrodes fasteners, Central Valley heat buckles membranes, mountain counties demand 200 psf snow loads, and the entire state sits on seismic faults, this four-week outline targets what California field inspectors and your licensing board exam items actually test—not generic national prep.
The Contractors State License Board regulates more than 40 classifications statewide.
Most qualifiers take both the Law & Business exam and at least one trade exam, unless they qualify for a waiver through reciprocity—which is rare.
No. CSLB exams are closed book, so you must memorize the code sections and labor rules referenced inside the study guides.
You have one year from CSLB's approval date to pass the required exams or the application lapses.
No. NASCLA results do not waive CSLB's trade exams.
Provide four years of journeyman, foreman, supervising, or contractor-level experience within the last ten years, verified by someone who witnessed the work.
Every CSLB license renews every two years; corporations also must keep their Secretary of State registration active.
Use a realistic, California-focused simulator to build timing, confidence, and repeatable passing habits.