California contractor license exams
Choose your exam below. Each guide breaks the test into topics with plain-English explanations and practice questions.
California Contractor Law & Business Exam
Free study guide and practice questions for the California CSLB Law & Business exam — contracts, mechanics liens, workers' comp, business finances, safety and more, current to the 2026 law book.
439+ practice questions →Contractors State License Board (CSLB) · 2026California C-31 Construction Zone Traffic Control Exam
Free study guide and practice questions for the California CSLB C-31 Construction Zone Traffic Control exam — work-zone signs and devices, tapers and TTC zones, flagging, changeable message signs, and OSHA worker safety, built from the public 2026 California MUTCD, Caltrans sign charts, and OSHA standards.
64+ practice questions →Contractors State License Board (CSLB) · 2026California C-12 Earthwork and Paving Exam
Free study guide and practice questions for the California CSLB C-12 Earthwork and Paving exam — grading and compaction, excavation, asphalt and concrete paving, ADA, OSHA trench safety, and construction stormwater, built from public OSHA standards, the California MUTCD, and Water Boards materials.
59+ practice questions →Contractors State License Board (CSLB) · 2026California C-32 Parking and Highway Improvement Exam
Free study guide and practice questions for the California CSLB C-32 Parking and Highway Improvement exam — pavement striping and markings, curb colors, ADA parking, surface seals, sport courts, pavement repair, and work-zone safety, built from the public California MUTCD, Vehicle Code, federal ADA Standards, and FAA and OSHA materials.
60+ practice questions →Applies to all CSLB trades · 2026Construction Math & Estimating
Free construction math and estimating practice for California CSLB exams — area and volume, unit conversions, concrete and asphalt takeoffs, percent grade and slope, estimating and costs, and right-triangle layout. The math skills tested on every trade exam.
51+ practice questions →OSHA · applies to all CSLB trades · 2026Construction Safety & OSHA
Free construction safety and OSHA practice for California CSLB exams — fall protection, ladders and scaffolds, excavation and trenching, electrical and lockout/tagout, PPE and silica, and hazard communication. The jobsite-safety rules tested on every trade exam.
48+ practice questions →