Law & Business
Practice for the Law & Business portion of the California contractor licensing exam.
Free · No card required
Find your CSLB exam starting point
Take a free 20-question diagnostic for the California contractor exam path you are pursuing. It takes about 10 minutes and helps identify what to study next.
Choose an exam path
Class A General Engineering
Trade exam preparation for Class A general engineering work.
Class B General Building
Trade exam preparation for Class B general building work.
C-2 Insulation & Acoustical
Trade exam preparation for C-2 insulation and acoustical work.
C-10 Electrical
Trade exam preparation for C-10 electrical work.
C-20 HVAC
Trade exam preparation for C-20 heating, ventilation, and air conditioning.
C-27 Landscaping
Trade exam preparation for C-27 landscaping work.
C-36 Plumbing
Trade exam preparation for C-36 plumbing work.
What to expect
- 20 questions selected for your chosen module.
- About 10 minutes to establish a starting point.
- No account, payment, or credit card is required to begin.
- Results are saved in this browser; sign in if you want access across devices.