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CSLB Business & Law Exam PrepCalifornia Contractor License (CSLB) Exam Prep — Business & Law Practice Test
The CSLB (Contractors State License Board) Business & Law exam is required for every California contractor license. Free study guides, 1,605 practice questions, and a full mock exam for the California contractor license — Business & Law portion.
The CSLB Business & Law exam is 115 questions in about 3.5 hours at a PSI testing center, and you need roughly 73% to pass.
Find your weakest CSLB topics in 5 minutes
The free 10-question Readiness Check shows exactly what to study first.
Start here — your free study path
Everything you need to pass the CSLB Law & Business exam, in the order to use it — watch, read, then drill.
- 1Watch the video courseNew · weeklyFull teacher-style lessons for all 7 exam sections. Lesson 1 is live now.
- 2Read the study guide — free onlineThe complete 7-chapter book, written to current 2026 law. Read every chapter free online — or get the full PDF + EPUB eBook for $9.99.
- 3Drill practice questions + a timed mock1605 free questions with answer explanations and statute citations, then a full timed mock exam.
Going for a specific license? Most contractors also pass a trade exam. Free practice for the big ones:
Licensing outside California? We cover every state with a real contractor exam — 23 states + NASCLA. Find your state →
How to pass the CSLB Business & Law exam
Take the free 10-question readiness check first — it shows your weakest topics in about five minutes. Then follow the study path — watch, read, drill — until you consistently clear the ~73% you need to pass. Finish with the full timed mock to confirm you're ready.
Try a sample question
A contractor who holds a Class "B" General Building Contractor license may perform work in which situation?
The CSLB Business & Law exam at a glance
Not sure you even need a license? CSLB contractor license vs handyman — compare →
Helpful resources
Apply / register — CSLB (official) →- NASCLA Contractor's Guide to Business, Law and Project Management
The industry-standard business & law reference behind state contractor exams.
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More CSLB videos on YouTube
Subscribe on YouTube →Pass the CSLB Law & Business Exam — Contracts Explained (2026)
Pass the CSLB Law & Business Exam — Public Works Explained (2026)
Pass the CSLB Law & Business Exam — Safety Explained (2026)
Contracts, payment & labor-law questions
Jump straight to a worked question with the answer and a full explanation.
- Prevailing wage rates on California public works projects are determined by:
- Under California law, a home improvement contract is required for residential work when the total contract price (labor AND materials) is at least:
- California prompt payment laws are designed primarily to:
- An AIA-style "Application and Certificate for Payment" (commonly G702/G703) is used to:
- A contractor changes the business address and main telephone number for the licensed business. With respect to the CSLB, the contractor should:
Frequently asked questions
How many CSLB Business & Law practice questions are in this bank?
1,605 original practice questions across all 7 topics of the CSLB Business & Law exam, with full explanations and California statute citations on every question.
Is the CSLB Business & Law practice free?
Yes — every practice question, organized by topic with full explanations, is free and needs no signup. The full timed mock exam (mock-readiness score, PDF report and weak-area retest) is free too. The only paid product is our optional $9.99 study-guide eBook.
Are these the real CSLB exam questions?
No. All questions are 100% original prose authored from public-domain sources (California Business and Professions Code, Civil Code, Labor Code, Title 16 CCR). We never copy from real CSLB exams or paid prep providers.
What topics does the CSLB Business & Law exam cover?
Seven topics: Business Organization & Licensing, Business Finance, Employment Requirements, Insurance & Liens, Contracts & Performance, Public Works, and Safety.
What's the passing score for the CSLB Business & Law exam?
A pass mark of about 73% is commonly cited by exam-prep providers, but CSLB does not publish a fixed public raw-score cutoff — it reports only PASS/FAIL. The real exam is 115 questions over 3.5 hours at a PSI testing center; a solid practice target is 75%+.
Can I take the CSLB exam in Spanish?
Yes — the official CSLB exam is offered in English and Spanish. Other languages may be available by translator request (4–6 weeks lead time). PrepPass practice questions are available in English, 中文, and Español.
Does PrepPass track which questions I get wrong?
Yes — sign up free and the 'My mistakes' filter shows you only the questions you've missed across all your practice sessions. It updates automatically as you re-attempt and get them right.
Related exams
Other license and certification exams people prep for alongside this one.
- CSLB General Building (B) Trade
- CSLB Electrical (C-10) Trade
- CSLB Plumbing (C-36) Trade
- OSHA 30 Construction
- Master Plumber (UPC/IPC)
- Master Electrician (NEC)