California C-36 Plumbing Contractor

Pass Your C-36 Exam On Your First Try

61 expert lessons, 1,100+ practice questions, AI tutor, audio content, and full-length exams. Everything you need in one platform.

1,100+ Practice Questions
Built on Official CSLB Blueprint
No Credit Card

Start free. No credit card required. 2 complete modules included.

61

Lessons

1.1k+

Questions

18h

Audio Lessons

24/7

AI Tutor

Everything You Need to Pass

A complete study platform built specifically for the C-36 exam. Master the material, pass with confidence.

61 Expert Lessons

Comprehensive coverage of all exam topics from underground plumbing to California codes.

Audio Lessons

Listen and learn anywhere. 18+ hours of professionally narrated content.

AI Tutor (24/7)

Ask unlimited questions. Get personalized explanations instantly, anytime.

Full Practice Exams

Timed, full-length exams matching the real CSLB test format exactly.

Spaced Repetition

Smart review system resurfaces weak areas at the perfect timing to lock in knowledge.

Progress Dashboard

Track your performance, see your pass probability, and know exactly when you're ready.

How It Works

Three simple steps to exam success.

1

Sign Up Free

Create your account in seconds. No credit card. Get instant access to 2 free modules.

2

Study Smart

Learn with AI-powered lessons, quizzes, practice exams, and personalized guidance.

3

Pass with Confidence

Score high on practice exams, then ace the real test. You're ready.

What's on the C-36 Exam?

Two sections. We cover everything.

Trade Exam (60%)

Technical knowledge

  • Planning & Estimating
  • Underground & Rough Plumbing
  • Finish Plumbing & Fixtures
  • Water Heaters & Specialty Systems
  • Plumbing Codes & Standards
  • Safety & Sanitation
  • Tools, Materials & Equipment

Law & Business (40%)

Legal & business knowledge

  • California Contractor License Law
  • Business & Project Management
  • Estimating & Bidding
  • Safety Regulations (Cal/OSHA)
  • Insurance & Bonding Requirements
  • Legal Contracts & Obligations
  • Lien Laws & Documentation
California Workforce Initiative

Pay once. Study until you pass.

No subscriptions. No renewals. One payment unlocks everything for as long as you need it.

Lifetime Access

CA Plumbing Prep — Lifetime

One payment. Everything unlocked. Forever.

$149$175

One-time payment · No recurring charges

Workforce Initiative pricing · Save $26 · Auto-applied at checkout

  • All 63 lessons across every C-36 module
  • 1,190+ practice questions with explanations
  • Full-length timed practice exams
  • AI tutor (100 messages included)
  • Audio lessons (18+ hours)
  • Spaced repetition flashcards & cram mode
  • Progress analytics
  • Lifetime access — no renewal, no expiry

Try 2 modules free first. 14-day refund window + Pass Guarantee on lifetime access.

Or stay on the free tier — 2 full modules, no card required.

Common Questions

Everything you need to know.

What is the C-36 Plumbing Contractor License?
The C-36 is a California specialty contractor license from the CSLB that allows you to legally perform plumbing work. It opens doors to business ownership, higher earnings ($70K-$120K+), and career stability.
How long does it take to prepare?
Most students study 1-2 hours daily for 2-4 weeks before the exam. Our platform has ~18 hours of lessons plus practice, so you'll be ready in whatever timeframe works for you.
Is there really a free trial?
Yes. Sign up with no credit card and get instant access to 2 complete modules, 5 AI tutor messages, and all basic features. Try before you commit.
Can I study on my phone?
Absolutely. CA Plumbing Prep works on all devices—phone, tablet, desktop. Learn anywhere: at home, on the job site, during commutes.
What if I don't pass?
You can try 2 modules for free with no card before you pay. Once you upgrade, you get a 14-day refund window — if you've completed fewer than 5 lessons and used fewer than 20 AI tutor credits, we'll refund you no questions asked. After that, the Pass Guarantee covers you: if you finish every lesson, score 85%+ on three full-length practice exams, sit for the real C-36 and don't pass, email us a copy of the official CSLB result letter and we'll refund every penny.
How is this different from other prep courses?
We use AI-powered tutoring, adaptive weak-area drills, spaced repetition, full exam simulations, and personalized study plans. Most competitors just offer static question banks.

Your C-36 License Is Closer Than You Think

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