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Based on this free sample only — it shows where to focus, not whether you'll pass.
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Free California Class B General Building Contractor Practice Test
Try a free sample of California Class B General Building Contractor exam-style questions with instant explanations — no login required.
Test2Pro provides online prep only; CSLB and PSI handle exam scheduling, testing, licensing, and results.
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What do as-built plans show after construction?
What this free test covers
Answer 20 original Class B General Building Contractor exam-style questions, then review your result by published topic area.
Exam topic areas
The Class B General Building Contractor exam is built from these published CSLB topic areas. Test2Pro groups your practice against the same areas so your feedback reflects how the real exam is weighted:
- Planning and Estimating15% of the exam
- Framing and Structural Components20% of the exam
- Core Trades30% of the exam
- Finish Trades20% of the exam
- Safety15% of the exam
Topic names and weights follow CSLB Class B General Building Contractor study guides; your practice here uses original Test2Pro questions grouped by those areas.
About this free practice test
This 20-question sample uses original Class B exam-style questions grouped by the five published CSLB topic areas. Your result shows which topics may need more practice; it does not predict whether you'll pass. The full course adds the complete question bank, saved history, and readiness tracking.
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Free sample
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- No login
- Topic feedback for the sample
Full prep
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Free Class B General Building Contractor practice test — FAQ
Who needs a Class B General Building license in California?
CSLB requires a Class B license for projects that involve two or more unrelated building trades — a remodel that touches framing, plumbing, and electrical, for example. Single-trade work usually belongs under a Class C specialty classification, and large engineered works fall under Class A (General Engineering). CSLB defines the official classifications and scope rules.
What is on the Class B General Building trade exam?
The Class B trade exam draws from five published CSLB topic areas: Planning and Estimating (15%), Framing and Structural Components (20%), Core Trades (30%), Finish Trades (20%), and Safety (15%). Core and finish trades together carry half the exam, so broad coverage matters more than depth in your own trade. The free sample above groups your answers by those same areas.
What is the difference between Class A and Class B contractor licenses?
Class A (General Engineering) covers fixed works that require specialized engineering knowledge — grading, paving, pipelines. Class B (General Building) covers structures that involve two or more unrelated trades, and it is California's most-held license. Pick the classification that matches the work you contract for; CSLB defines the official scope rules.
How many questions are in the free Class B practice test?
This is a 20-question sample, not a full mock exam. It uses original Class B exam-style questions across all five topic areas, and your result appears without login, payment, or a time limit.
Do I need to sign up to take the Class B sample?
No. Your topic breakdown appears after the last question, and each answer includes an explanation of the reasoning.
Does the sample predict whether I will pass the Class B exam?
No. A 20-question sample cannot predict the result of a 3.5-hour closed-book exam. Use the topic breakdown to choose what to study first.
How to use your sample score
Start with your lowest-scoring topic. In the full prep, saved history shows whether that area improves over time.
Sources and method
Topic names and weights follow CSLB study guides; practice questions are original Test2Pro content.
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