Mistake review
Every miss goes to Review. Practice those questions again until you get them right, so your reps go where you're still shaky.
California CSLB · Contractor License Exam Prep
California contractor license exam prep, online and self-paced.
Practice California-specific questions for your contractor trade exam and Law & Business on any device, with instant rationales and readiness tracking. No classroom required.
Site content in 4 languages, with AI tutor support in 8.
Practice online before exam day; applications, scheduling, testing, and licensing happen outside Test2Pro.
Free practice test
Try a free practice test
Try original exam-style questions with instant explanations — no login required.
- Sample question set
- Instant explanations
- No login
- Topic feedback for the sample
Prefer the full demo? Create a free account →
CONTENT MAPPED TO CURRENT CODE REFERENCES · UPDATED QUARTERLY
NEC 2023 Aligned
IAPMO UPC 2024
AWS D1.1
EPA 608
NABCEP PV
CSLB Topics
NFPA 70E
Mechanical Code
9.1k+
practice questions
All written & reviewed by credentialed tradespeople
3/6months
access length options
Fits your study schedule
20
questions in the free test
Results by topic after completion
8
AI assistant languages
EN · ES · ZH · TL · VI · KO · HY · RU
01 · ExamsPick your trade.
Pick your trade.
We've already mapped the blueprint.
Every exam prep package is built from the official content outline — so your practice covers every domain the real test can touch, weighted the way the test weights it.
02 · How it works
Four steps from "where do I start" to test-day confident.
01 Pick your exam Choose your California classification — B General Building, C-10 Electrical, or Law & Business. Practice follows the published CSLB topic areas for that exam.
02 Start the free demo Create a free account and practice original questions for your exam, harder ones included. No card needed. Your results show which topics need work.
03 Learn from every miss Every miss gets a plain-English explanation. Ask AI Pro follow-ups in your language, practice your mistakes again, or listen to a short audio lesson about them.
04 Full mock exam With the full course, take timed mock exams under exam-style rules. Compare your score with the Test2Pro readiness bar and see which topics still need review.
03 · What's inside
Built for how trade candidates actually study.
Short reps, honest feedback, and a tutor that speaks your language.
AI Pro tutor
While you practice: plain-English explanations, deeper hints, and follow-up questions. Ask in your language.
Timed mock exams
Practice pacing under exam-style rules. Review your results by topic to plan your next session.
Code-referenced
Questions that depend on a code citation are reviewed against the applicable NEC, UPC, IMC, or other current reference.
Audio lessons
Turn your mistakes into a short audio lesson in your language. Listen on the way to work or during a break.
Topic-mapped practice
Focused practice built by credentialed California tradespeople and organized around published exam topic areas.
04 · PricingStart with your trade exam.
Start with your trade exam.
Bundle what most applicants actually need.
Every plan includes the full question bank, timed practice, and progress tracking. AI Pro is free for everyone.
Start here
Trade exam prep package
From
$199
Starting trade package
Start with the prep package for the classification you are testing for.
Question bank
Timed practice
Mock exams
Weak-area tracking
Common package
Law & Business bundle
Add to package
+$100
Business-law prep, bundled
Covers the business-law side most California contractor applicants pair with their trade exam.
One checkout path
Trade exam + business-law prep
Access length selected at checkout
Included
AI Pro included
AI Pro is free for everyone. Get explanations, ask follow-up questions, and study in your language.
8 supported languages
Expanded hints
Follow-up questions
The price covers digital exam prep for your selected access period. AI Pro is free for everyone. Exam registration and licensing fees are separate; purchases do not guarantee an exam result.
05 · FAQ
Answers to the real questions.
How does Test2Pro help me prepare?
Practice follows the published exam topics. Work through questions, review explanations, and use your results to choose what to study next.
How often do you update content for new codes?
Question banks are reviewed quarterly and whenever a relevant code cycle changes. Questions that depend on a code citation are checked against the current edition listed for that exam.
Can I use Test2Pro in Spanish (or another language)?
Yes. The site interface is available in 4 languages: English, Spanish, Chinese, and Russian. Practice translation and AI Pro support 8 languages, including Tagalog, Vietnamese, Korean, and Armenian.
Can I try it for free?
Yes. Take a 20-question free practice test without an account, or create a free account to start a demo for your exam: your free test answers carry over, plus harder questions with explanations, AI Pro, and mistake review. No card required. The full course adds the complete question bank and timed mock exams, and your demo progress carries over.
Does Test2Pro help with the license application?
Test2Pro provides prep only; CSLB handles applications and licensing. License Path in your account walks you through the CSLB steps and can look up your application status with your Application Fee Number. The first three steps are free; trade courses unlock the full path.
Pick your California exam prep bundle
Start with your California classification: B General Building, C-10 Electrical, or Law & Business. Most applicants bundle Law & Business with their trade exam.
TEST-DAY READY
Walk into the exam room
like you've been there before.
Start a free demo for your exam. See which topics cost you points, review every miss, and move to the full course when you're ready.
Free demo for your exam Harder questions, no card
Every miss saved for review practice it or listen to it
AI tutor in your language 8 supported languages
Timed mock exams in the full course