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CSLB Building Moving and Demolition (C-21): Study Guide

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What this book covers

The Peerless Building Moving / Demolition (C-21) Study Guide Book prepares you for the trade portion of the California CSLB contractor license exam. Per the state's classification, a C-21 contractor "raises, lowers, cribs, underpins, demolishes and moves or removes structures, including their foundations." This printed book covers the subjects the state tests. See the official CSLB C21 classification.


Book sections

  1. Glossary
  2. Code text information
  3. Text on electrical
  4. Blasting
  5. Text on traffic control
  6. Text on fire extinguishers
  7. Plans & specifications
  8. Cal/OSHA
  9. Elementary mathematics
  10. Text on plumbing
  11. Text on construction equipment & tools

Sample questions: Try our free practice test

  1. What kind of fire extinguisher should be used on an asphalt roof fire?
    A. Foam · B. Soda acid · C. Carbon dioxide · ✓ D. Dry chemical
  2. Which of the following fire extinguishers cannot be used to put out a Class B fire?
    A. Foam · B. Ordinary dry chemical · ✓ C. Gas cartridge · D. Carbon dioxide
  3. Which type of extinguisher contains a solution of aluminum sulfate and bicarbonate of soda?
    ✓ A. Foam · B. Ordinary dry chemical · C. Gas cartridge · D. Carbon dioxide

California contractors who passed

Hard to find good study material for demolition. This one had useful information and diagrams for the work, and I passed.

Hugo Coronado, CA  · Building Moving/Demolition (C-21)

Passed the C-21. The permits and safety sections were the ones I needed most.

Silas Berkeley, CA  · Building Moving/Demolition (C-21)