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A C-21 Building Moving/Demolition license (16 CCR §832.21) authorizes raising, lowering, cribbing, underpinning, demolishing, and moving or removing structures, including their foundations. CSLB’s own C-21 study guide weights the trade exam across five content areas: Planning and Estimating (25%), Project Preparation (20%), Building Moving (13%), Structure Demolition (21%), and Safety (21%) — and while Project Preparation includes removing hazardous materials as a planning step, actually performing asbestos abatement requires the separate C-22 license. This course covers the CSLB-outline C-21 trade exam plus Law & Business: a full study guide, 4 practice exams, and an explanation for every answer. Read the full C-21 License Guide for the complete content breakdown.
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Facts on this page are checked against the current code editions and the state licensing board that administers this classification’s exam.
Last updated: July 16, 2026. Accuracy method: every code citation and answer is verified against current code editions and licensing-board requirements, and corrected as codes change. Refund policy.
C-21 — Building Moving & Demo exam — frequently asked questions
What’s included in this course?
An original study guide plus full-length practice exams, with a detailed explanation for every question. Where your state requires a separate Business & Law exam, Law & Business prep is included at no extra cost.
How long do I have access, and what does it cost?
You choose your access term at checkout: 30, 60, or 90 days, priced at $99, $129, and $169. Pick the window that fits your exam date.
What score do I need to pass?
Passing scores vary by state and classification (commonly around 70–75%). Our practice exams mirror the real exam’s topic weighting so you can gauge readiness before test day.
How current is the material?
It is checked against the current code editions and the licensing-board requirements for this classification and updated as codes change. See the “Last updated” date and verification note above.