- Steep-Slope Roof Projects is the largest domain at 26% of the CA-C39 trade exam.
- The trade exam runs 210 minutes, closed-book, four-option multiple choice, on a PSI computer.
- PSI registration is $51.43 per attempt; the trade-plus-Law-and-Business route totals $102.86 in exam fees.
- You have 18 months after application acceptance to pass required exams, with a 21-day wait after a fail.
Fast Facts Snapshot
This is the one-page version of everything a CA-C39 candidate needs pinned above their desk. It condenses the numbers, deadlines, and domain weights you'll otherwise have to dig for across multiple CSLB and PSI pages. If you want the long-form walkthrough behind any of these numbers, the CA-C39 Study Guide 2026 covers the reasoning in depth - this page is built for quick recall, not explanation.
| Item | Detail |
|---|---|
| Governing body | California Contractors State License Board (CSLB) |
| Exam administrator | PSI |
| Trade exam length | 210 minutes, closed-book, computer-based |
| Question format | Four-option multiple choice, one best answer |
| Calculator policy | On-screen calculator provided; personal calculators prohibited |
| Languages | English and Spanish |
| Minimum age | 18 years old |
| Experience requirement | 4 years journey-level/foreman/supervisor/contractor experience within the prior 10 years |
| Education credit cap | Up to 3 years, with at least 1 year of practical experience required |
Domain Weights at a Glance
CSLB publishes approximate weightings across five content areas. Memorize these percentages before you memorize anything else - they tell you where to spend your study hours.
Domain 1: Planning and Estimating - 22%
Covers takeoffs, material calculations, contract documents, and scope-of-work planning before a crew ever touches a roof.
Domain 2: Job Site Preparation for Roof Projects - 13%
Covers site protection, staging, tear-off logistics, and readiness checks prior to installation work.
Domain 3: Low-Slope Roof Projects - 17%
Covers membrane systems, built-up roofing, and other low-slope application methods and details.
Domain 4: Steep-Slope Roof Projects - 26%
The largest domain. Covers composition shingle, tile, wood, and metal steep-slope systems and installation sequencing.
Domain 5: Safety - 22%
Covers fall protection, ladder use, roof access, and general jobsite safety practices specific to roofing work.
Notice that Steep-Slope Roof Projects, Planning and Estimating, and Safety together account for 70% of the entire exam. That means three of five domains carry most of the weight - a pattern worth internalizing before you build a study plan. For a deeper breakdown of what falls under each heading, see the CA-C39 Exam Domains 2026 guide.
Key Takeaway
If your review time is limited, prioritize Steep-Slope Roof Projects, Safety, and Planning and Estimating first - they cover 70% of exam content between them.
Exam Format Cheat Sheet
Knowing the mechanics of the test day matters as much as knowing roofing content. The CA-C39 trade exam is delivered on a PSI computer terminal, closed-book, with four-option multiple choice questions and one best answer per item. You get 210 minutes to work through the trade exam. A calculator is provided on-screen; bringing your own is not permitted, so practice using an on-screen calculator interface if you can before test day.
Most candidates also sit for the Law and Business exam unless an exemption applies. Each of the two exams - trade and Law and Business - allows 3 hours 30 minutes. Together, that's a significant testing commitment, so plan your exam-day logistics (arrival time, ID requirements, breaks) around two long sessions rather than one.
Exams are offered in English and Spanish. If you're weighing whether the format itself is the hard part or whether it's the content volume, the How Hard Is the CA-C39 Exam? guide breaks that distinction down further.
Fees, Timelines & Deadlines
The dollar figures around CA-C39 are split between PSI's exam registration fees and CSLB's licensing fees - two separate systems, two separate payments.
- PSI exam registration: $51.43 per examination attempt. If you take both the trade exam and Law and Business, that's two fees totaling $102.86.
- CSLB original application fee: $450.
- Initial license fee: $200 for a sole-owner license or $350 for a non-sole-owner license.
- Renewal fee (every two years, timely): $450 for sole owners or $700 for non-sole-owner entities.
For the full math on how these add up across a licensing cycle, the CA-C39 Certification Cost breakdown lays out every line item.
On timing: applicants get 18 months after application acceptance to pass the required examinations. If you fail an attempt, you must wait 21 calendar days before paying and rescheduling - mark that on your calendar the moment you get a fail notice so you don't lose momentum. Once you pass, results remain valid for five years, which matters if you need to pause between passing the trade exam and finishing Law and Business or other licensing steps. Scheduling logistics and testing windows are covered in more detail at CA-C39 Exam Dates 2026.
Key Takeaway
Budget for two PSI fees ($102.86 total) plus CSLB's $450 application fee and either $200 or $350 initial license fee - four separate payments in the full pathway.
Must-Know Topics by Domain
Beyond percentages, candidates need concrete topic checklists. Below is a condensed version tied directly to each domain's real-world content, not generic contractor trivia.
Planning and Estimating (22%)
- Reading roof plans and calculating material quantities from measurements
- Understanding contract scope, specifications, and manufacturer requirements
- Sequencing a project from bid to material ordering
Job Site Preparation for Roof Projects (13%)
- Protecting landscaping, gutters, and structures during tear-off
- Staging materials and equipment for efficient access
- Pre-installation inspection of the existing roof deck and substrate
Low-Slope Roof Projects (17%)
- Membrane and built-up roofing installation sequencing
- Flashing details at penetrations and roof edges on low-slope systems
- Drainage considerations specific to low-slope applications
Steep-Slope Roof Projects (26%)
- Composition shingle, tile, wood shake, and metal roofing installation methods
- Underlayment selection and application by roof pitch
- Valley, hip, and ridge detailing for steep-slope systems
Safety (22%)
- Fall protection systems and anchor point requirements
- Safe ladder setup and roof access procedures
- General jobsite hazard recognition specific to roofing work
If you want a full narrative explanation of how these topics connect to real exam questions, the exam domains guide is the natural next stop after this cheat sheet.
Final-Week Review Schedule
A cheat sheet is only useful if you actually use it during a structured final push. Here's a compressed, CA-C39-specific review pattern for the last four weeks before test day - weighted toward the domains that carry the most points.
Steep-Slope Roof Projects
- Drill shingle, tile, and metal installation sequencing (26% of the exam)
- Review underlayment selection by pitch and manufacturer specs
Safety and Planning and Estimating
- Alternate practice questions between fall protection and takeoff/estimating math
- Both domains sit at 22% - treat them as equal priority
Low-Slope Roof Projects and Job Site Preparation
- Cover membrane systems and drainage detailing
- Review site protection and staging procedures for tear-off jobs
Full Mixed Review
- Take timed practice sets across all five domains
- Re-check the passing score requirement so you know your target
For exact scoring mechanics referenced in Week 4, see CA-C39 Passing Score 2026. And if you're using practice tests to simulate the real 210-minute session, do at least one full-length timed run before your final week so pacing isn't a surprise on exam day.
After You Pass: License Upkeep Facts
Passing the exam is a milestone, not the finish line. A few facts candidates often overlook until it's urgent:
- License issuance requires a $25,000 contractor bond - that figure is the bond amount, not the premium you'll actually pay for it.
- Active C-39 licensees must maintain workers' compensation insurance or approved self-insurance, even if you have no employees.
- Active licenses renew every two years; timely renewal is $450 for sole owners or $700 for non-sole-owner entities.
- Passing exam results are valid for five years, so plan the rest of your licensing steps within that window.
If you're still deciding whether the whole pathway is worth pursuing given these ongoing obligations, Is the CA-C39 Certification Worth It? weighs the tradeoffs. And if you haven't confirmed your eligibility yet, double-check the experience and age requirements in the CA-C39 Requirements guide before you pay any fees.
Frequently Asked Questions
The trade exam allows 210 minutes and is closed-book, computer-based, delivered as four-option multiple choice questions with one best answer per item.
Steep-Slope Roof Projects is the largest domain at 26% of the exam, followed by Planning and Estimating and Safety at 22% each.
PSI registration costs $51.43 per examination attempt. The standard route requiring both the trade exam and Law and Business totals $102.86 in exam fees.
You must wait 21 calendar days after a failed attempt before you can pay and reschedule. You still have up to 18 months from application acceptance to pass required exams.
Passing examination results remain valid for five years from the date you pass.
Bookmark this cheat sheet and revisit it during your final review week - pairing it with full-length practice tests and the domain-specific guides linked above gives you both the memorized facts and the applied practice needed to walk into the PSI testing center prepared.