The key difference between the National Standard Building Contractor "B" (ICC G12) and the National Standard Residential Building Contractor "C" (ICC G13) lies in the scope of work each license allows:

Class B (ICC G12) – Building Contractor Allows contractors to construct, remodel, or repair commercial buildings up to three stories as well as residential structures. Exam covers the 2018 International Building Code (IBC), 2018 International Residential Code (IRC), and Concrete Manual.

Class C (ICC G13) – Residential Contractor Limited to one- and two-family dwellings and townhouses up to three stories. Exam focuses solely on the 2018 International Residential Code (IRC). In short, Class B contractors can work on both commercial and residential projects, while Class C contractors are restricted to residential projects only

Program Investment. We accept credit cards, cash and ACH. Once you're ready to join, we can generate a unique invoice.

Class C License Prep: $2,500 total

Class B License Prep: $2,500 for Part 1 + $1,500 for the Virtual Learning Part 2

Pay in full upfront and receive a $500 discount on the B Program.

50% deposit saves your seat.

Reasonable payment plans are available, but please note we do not offer grants or third-party financing at this time.

Our intensive, no-fluff General Contractors Exam Prep Course is designed for serious professionals preparing for the National Standard Building Contractor “C” ICC G13 Exam through Pearson VUE.

Led by a seasoned instructor with hands-on ICC code and testing experience, this in-person course delivers focused, expert instruction, targeted exam strategies, and the personalized support you need to pass with confidence.

Hands-On Learning: 16-hours of interactive, in-person classes over (4) Saturdays, plus

Instructor Office Hours tailored to help you excel. (8AM - 12PM) at The Business Foundry - 9044 Forsstrom Dr, Lone Tree, CO 80124.

Correct Code Edition: Participants will receive the 2018 International Residential Code (IRC)

book, along with a tab kit for marking key exam topics. Note: The exam is based on the 2018

edition, not the latest version.

Comprehensive Online Knowledge Portal: Access on-demand resources including a

Course Introduction and Learning Modules

Practice Exams: Weekly practice exams and quizzes allow you to track your progress and

boost your readiness.

Networking & Mentorship: Connect with growth-minded contractors and gain insights

from an instructor with decades of real-world experience.

Contractors of Colorado - B License General Contractor Course

The National Standard Building Contractor “B” ICC G12 Exam is one of the most

comprehensive licensing exams in the construction industry — covering both residential

and commercial building knowledge, codes, and field-tested expertise.

To help you master the material without being overwhelmed, we’ve redesigned the course

into two focused phases. This format makes the learning more flexible, practical, and

tailored to your success — allowing you to absorb foundational knowledge first, then level

up with advanced topics after a short break.

Class B Course Structure

Part 1: Residential Focus (Weeks 1–4) IN-PERSON LEARNING

Build a solid foundation in residential general contracting — the same curriculum

offered in our standalone Residential GC Course.

Nearly half of the B License Exam covers residential code, so this is critical to your

success!

Optional Break: You can roll right into Part 2 or take a full month off & rejoin at the start of

the next month.

Part 2: Commercial & Advanced Topics (Weeks 5–8) VIRTUAL LEARNING

Tuesdays & Thursdays 6PM - 8PM

The program transitions to a live online format, led in real-time by our Course Instructor.

Allowing you to come back recharged and ready to tackle more complex material,

including commercial construction methods, licensing exam prep, and real-world

strategies to help you succeed as a B License General Contractor.

To obtain your Class C General Contractor license in Colorado, you must pass the National Standard Residential Building Contractor “C” (ICC G13) Exam through Pearson VUE. Our course fully prepares you with structured instruction, textbook mastery, and realistic exam simulations.

For the Class B General Contractor license, you'll need to pass the more advanced National Standard Building Contractor “B” (ICC G12) Exam, also administered via Pearson VUE. This course offers in-depth coverage of the 2018 IBC and IRC codes, reinforced by comprehensive exam strategies tailored to the Class B scope

After completing either course:

We’ll assist you in finding a Pearson VUE testing center and navigating the registration process.

Once you pass the exam, we’ll guide you through applying for your license with the proper state or municipal authority.

Whether you're pursuing Class C (G13) or Class B (G12) licensing, our goal is the same: equip you with the knowledge and confidence to pass your exam and launch your contracting career in Colorado.

Nuestros cursos de preparación para el examen se imparten en inglés, ya que los exámenes de contratista del ICC se administran principalmente en inglés. Sin embargo, el International Code Council (ICC) ofrece algunos exámenes en español, dependiendo de la jurisdicción y el tipo de examen. Para verificar si el examen de Contratista Clase B (ICC G12) o Clase C (ICC G13) está disponible en español, recomendamos consultar directamente con ICC o Pearson VUE, el proveedor oficial de los exámenes. Si necesita apoyo en español, algunas jurisdicciones pueden permitir el uso de un intérprete, pero esto requiere aprobación previa.

Our exam prep courses are taught in English, as the ICC contractor exams are primarily administered in English. However, the International Code Council (ICC) does offer some exams in Spanish, depending on the jurisdiction and exam type. To determine if the Class B (ICC G12) or Class C (ICC G13) exam is available in Spanish, we recommend checking directly with ICC or Pearson VUE, the official testing provider. If Spanish-language support is needed, some jurisdictions may allow candidates to bring an interpreter, but this requires prior approval.