CSLB Trade Exam Study Guide
How CSLB trade exams are built, how to read your classification’s study guide and how to prepare for code, math and safety questions.
Quick answer
Every classification except the C-61 has its own trade exam and its own CSLB study guide. The guide lists the exam’s sections, how much each is worth, sample questions and the code books and references to study. Trade exams are closed book, multiple choice and often include math and questions that refer to drawings.
Start With Your Study Guide
CSLB publishes a study guide for every trade exam, in English and in Spanish. Each one includes a breakdown of exam topics, sample questions, resources to study and test strategy. Check the date at the top of the guide, because CSLB updates exam outlines and code editions.
Example: The Class B General Building Exam
The B exam covers five sections:
| Section | Weight | Topics |
|---|---|---|
| Planning and Estimating | 15% | Scope of work and code compliance, plans and specifications, inspections, coordination, cost estimating |
| Framing and Structural Components | 20% | Subfloor and wall framing, roof framing, seismic hardware, siding and stucco, decks and stairs |
| Core Trades | 30% | Plumbing, electrical, HVAC, concrete, earthwork and surveying, insulation and weatherproofing, roofing |
| Finish Trades | 20% | Painting and coatings, tile and stone, floor covering, cabinetry, plaster and drywall, windows and doors, landscaping |
| Safety | 15% | Personnel safety, transportation and traffic control, environmental safety |
Notice that Core Trades is the largest section. A general building contractor is tested on plumbing, electrical, HVAC, concrete and roofing, not just framing. See the Class B license guide.
Typical Reference Materials
- California Building Code and California Residential Code (Title 24)
- California Electrical, Plumbing, Mechanical and Energy Codes, depending on the trade
- Cal/OSHA Construction Safety Orders
- Trade specific manuals and standards listed in your study guide
California code books can be viewed online through the Building Standards Commission.
Types of Questions to Expect
- Code requirements, such as minimum dimensions or clearances
- Math, such as area, volume, slope and material quantities
- Questions that refer to blueprints or drawings
- Safety and job site practices
- Estimating labor, materials and equipment
How to Prepare
- Study the biggest sections first, but do not skip any.
- Practice the math by hand until it is routine.
- Learn how to read the drawings and plan sheets common in your trade.
- Take timed practice tests to build speed and confidence.
CSLP has prepared California contractors for their CSLB exams since 2013. Our courses include help with your CSLB application, online law and trade books with practice questions and weekly live classes in English and Spanish, from $595. Compare course options.
Content reviewed against CSLB sources: November 2026
- CSLB: Examination study guides
- CSLB: General Building (B) examination study guide (PDF)
- CSLB: Step 7, studying for the examination
- CSLB: Examinations frequently asked questions
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CSLB Trade Exam Study Guide: FAQs
Is there a trade exam for the C-61 license?
No. C-61 Limited Specialty applicants take only the Law and Business exam. See the C-61 license guide.
Are trade exams open book?
No. Trade exams are closed book. A calculator is provided at the test center.
Is my trade exam available in Spanish?
Ten exams are offered in Spanish, including B, C-8, C-9, C-15, C-27, C-33, C-36, C-39 and C-54. For other trades you can request an approved translator. See the CSLB exam in Spanish.
Where do I find the study guide for my trade?
On CSLB’s Examination Study Guides page, listed by classification. You can also browse our license type guides.