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

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).

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 the 2021 Concrete Manual.

In short: Class B contractors can work on both commercial and residential projects, while Class C contractors are restricted to residential projects only.

Important: Always check with your local building department to confirm which license is required for the type of project you plan to complete. If you have questions, we’re happy to be a resource and share our professional opinion to help you make the right choice.

100% Online Class C GC License Exam Prep: $1,999

100% Online Class B GC License Exam Prep: $2,999

We accept credit cards, cash, and ACH. A 50% down payment is required to secure your spot in the next upcoming class. The remaining 50% is due a at least 72 hours before class starts.

Payment plans can be arranged, 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 built for serious professionals preparing for the National Standard Building Contractor “C” ICC G13 Exam through Pearson VUE.

Live, Expert-Led Instruction: Attend interactive webinars on Wednesdays from 4:00 PM – 6:00 PM and Fridays from 7:00 AM – 9:00 AM over a 4-week program. Each session is led by a seasoned instructor with hands-on ICC code and testing experience, delivering focused instruction, targeted exam strategies, and personalized support to help you pass with confidence.

Hands-On Learning: While fully online, the course provides practical exercises, guided code walkthroughs, and opportunities to ask questions in real time during live instruction.

Correct Code Edition: You’ll 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 course introductions, learning modules, and recorded session materials so you can review anytime.

Practice Exams: Weekly practice exams and quizzes help you track 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

Part 1: Residential Focus (Weeks 1–4) – Live Online Learning

Schedule: Wednesdays 4:00 PM – 6:00 PM & Fridays 7:00 AM – 9:00 AM

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, making this phase critical to your success.

Note for 100% Online B Students: You’ll start here with the online Class C program before transitioning to the commercial-focused B curriculum.

Optional Break: You can roll directly into Part 2 or take a full month off and rejoin at the start of the next month.

Part 2: Commercial & Advanced Topics (Weeks 5–8) – Live Online Learning

Schedule: Tuesdays & Thursdays 6:00 PM – 8:00 PM

Transition to advanced topics, including commercial construction methods, licensing exam prep, and real-world strategies to succeed as a B License General Contractor.

The program continues in a live online format, led in real-time by our expert instructor, allowing you to tackle more complex material fully prepared.

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.