Contractor License School 

How To Pass Your C-4 Test.

Passing your C-4 Test (Boiler, Hot Water Heating and Steam Fitting) may be easier than you think.

C-4, the only explosive license. Just kidding, there’s demolition.  

Common Questions?

Do I take both tests on the same day? Only if you want to. You have the freedom to choose your testing date and location. 

How many questions? The Test ranges from 110 to 120 questions.

How long is the exam? The exam duration is 3.5 hours.

What is C-4 experience? Click this link to learn more.

Give us a call with any questions – (800) 659-1207

or shoot us an email  info@contractorlicensenow.com 

All you need to know.

Test number 1. Law

All good things in life come in pairs. Like jorts and the giraphes in Noahs Ark. Getting your license is just the same. You need to pass two tests. The first one is exclusively on law. It will test you on liens, taxes, contrct law, bonds, etc. But don’t worry, you got this. 

Test Number 2. Trade

The trade test is much different than the Law. It is exclusive to the license you are getting. C-4 in this case. That means you have been studying for years now. How? Because you have at least 4 years of working experience in that trade. 

How do I get started?

Our job at the contractor License School is to make sure you are equipped to take the test and become a successful contractor. We help you every step of the way. From educating you to pass your test, setting up your business entity, and advertising, we want to be a resource for you.

But first, there are a few things you should know…

1. You need to have 4 years of experience (the hardest part)

2. Must be 18 years or older (the easiest part)

3. Must have an SSN or ITIN (the average difficulty part)

You’re halfway to getting your license once you pass the requirements. So the only thing left for you to do is take massive action. ‘Get stuff done’ if you will. And that starts with taking the first step. 

What about the APPLICATION?

Upon enrolling in the course we will provide a copy of the application as well as assistance on how to best fill it out. Once you have completed the course, feel comfortable, and ready for the test you can fill it out, get it signed and we will review it one more time. Then you’ll send it off and the rest will be history. 

It typically takes up to 8 weeks for the CSLB to get back to you for a test date. Once they do, you’ll be given options for a date and location to take your test. 

Got more questions? 

full online course

  • 4 Law & Business Live Streaming Classes
  • Once A Week For 4 Weeks
  • Two Months Access
  • Trade DVDs and CDs.


  • – Law & Business Practice Tests
  • – Trade Practice Tests
  • – Access To Law-Class Recordings (Video and Audio)
  • – Trade DVD Teaching
  • – Trade CD Teaching
  • So Basically Everything You Need To Study Law and Trade


  • Application Assistance (That Application Can Be Difficult)
  • A Handy-Dandy Pass-Test Guarantee
how to get your general b contractors license

“Excellent school! I passed law and electrical exams on my first try and I was more than ready. They also set up my S Corps and helped me through the full process.”

Charles Blake

Take A Practice Law Test

Take A Practice Law Test

Subscribe to get updates (and epic content) from us and get access to a free ten-question law test. So you can get a taste of what the law test is like :)

Success! Confirm your email to get access to Practice Test.