About this C-21 — Building Moving & Demo prep
This prep is built specifically for the C-21 — Building Moving & Demo examination and includes a 18,000+-word study guide written for this exam, 5 full-length practice exams and 507 practice questions, each with a written explanation.
The CSLB C-21 Building Moving and Demolition trade examination is administered by CSLB / PSI. Closed book 3.5 hours. CSLB does not publish scored Q or pass %. Practice 5×100/210. Mix (on/after 7/1/2024): Planning 25, Preparation 20, Moving 13, Demolition 21, Safety 21. Law separate.. This prep is written to that board’s current scope, not to a generic national syllabus.
The real C-21 — Building Moving & Demo exam contains 100 questions. Our practice exams mirror that structure so the format is familiar before you sit it.
Topics covered
- Hazardous Material Surveys -- Pre-Demolition Requirements
- AQMD Notification Requirements
- Contracts and Change Orders
- California Building Code -- Demolition Requirements
- Structural Assessment for Building Moving
- Building Moving Procedures
- Traffic Control During Building Moves
- 150 - Estimating Building Weight for Moving
- Contractor Licensing -- C-21 Classification
- Utility Disconnection Procedures -- Code Requirements
- Cal/OSHA Demolition Safety Orders
- Fall Protection During Demolition
- Demolition Methods and Sequencing
- Debris Management and Environmental Compliance
- Specialized Demolition Topics
- 145 - Pre-Demolition Asbestos Survey (NESHAP 61.145)
- 141 - RACM Definition (NESHAP 40 CFR 61.141)
- Additional Safety Requirements
- Contractor Bonds
- Mechanics Liens
How access works
You are paying for access length (30, 60, or 90 days). The study guide and four timed exams are the same on every term. Access starts when you enrol and works on any device for that term.
Not affiliated with or endorsed by any state licensing board or exam vendor. For exam-preparation purposes only.
What is actually on the C-21 exam
CSLB divides the Building Moving and Demolition (C-21) examination into five sections. These weightings are the Board’s own, taken from the study guide it publishes for this classification — they are not our estimate:
| Section | Share of exam |
|---|---|
| Planning and Estimating | 25% |
| Project Preparation | 20% |
| Building Moving | 13% |
| Structure Demolition | 21% |
| Safety | 21% |
The C-21 examination is closed book — no reference materials may be used during the test. Questions are multiple choice with four options, and there is no penalty for guessing, so leave nothing blank.
This is only half of what you sit. Every applicant also passes the separate Law and Business examination, which is not part of the C-21 paper and is weighted on its own outline. Budget preparation time for both.
Source: CSLB Building Moving and Demolition (C-21) examination study guide. Contractor Pathway is an independent exam-preparation provider and is not affiliated with or endorsed by CSLB.