Everything You Need to Know About Colorado Plumbing Licensing

Colorado is a state that requires plumbing professionals to earn a state-issued plumbing license to practice legally. Plumbing is an important part of any home or business. In Colorado, it is required by law that anyone performing plumbing services must be licensed appropriately. You are only allowed to perform plumbing services with the proper certification. If you don’t have the necessary credentials, you could be fined or revoked your license. You should understand the licensing requirements to own a license and start a plumbing business in Colorado. Below we will discuss the licensing requirements, how to obtain a license and other helpful information.

Colorado Plumbing License Categories

Plumbing contractors in Colorado must obtain a license from the Department of Regulatory Agencies (DORA). The DORA offers three plumbing licenses: Journeyman Plumber, Master Plumber, and Residential Journeyman Plumber.

i. Journeyman Plumber

Journeyman Plumbers must have 8 years of experience in the plumbing profession, either as an apprentice or as a helper. The Journeyman Plumber license is required to perform all plumbing installation, repairs, and maintenance work.

ii. Master Plumbers

Master Plumbers must have at least 4 years of experience in the plumbing profession and complete a licensing exam. In addition, Master Plumbers must demonstrate proficiency in plumbing installation, repairs, and maintenance work. The Master Plumber license is required to perform plumbing work on commercial and industrial buildings.

iii. Residential Journeyman Plumber

The Residential Journeyman Plumber must have completed apprenticeship training in Colorado and passed a state exam. Residential Journeyman Plumbers can install plumbing systems, gas piping, water heater systems, and related equipment and repair and replace existing systems. They are also responsible for ensuring that all plumbing projects comply with local, state, and federal codes. Residential Journeyman Plumbers must have strong knowledge of plumbing fixtures, piping systems, and related technology and good communication skills to work effectively with customers and other professionals.

How to Become a Licensed Plumber in Colorado

To become a licensed plumber in Colorado, you must meet the state’s licensing board requirements. You will need to complete an apprenticeship program or obtain some experience, pass a licensing exam, and pay any required fees.

1. Apprenticeship Program

The Colorado Department of Labor & Employment (CDLE) offers a plumbing apprenticeship program that includes classroom instruction and on-the-job training. Upon completing this program, individuals can apply for the Journeyman Plumber license.

2. Obtaining Experience

In place of completing an apprenticeship program, individuals can also obtain experience by working in the plumbing profession as a helper or apprentice for a minimum of 8 years. It is important to keep records of your experience in the plumbing profession and be willing to provide documents proving your years of experience.

3. Licensing Exam

After you have obtained the necessary experience, you must pass an exam administered by the DORA. The exam includes questions about plumbing installations, maintenance, and repairs. If you apply for the Master Plumber license, you must also pass an additional exam.

4. Fees

You need to pay the required fee to obtain your plumbing license. The fees vary depending on the type of license you are applying for. If you are applying for a “Journeyman Plumber” license, you will need to pay a $356 fee. If you apply for the “Master Plumber” license, you will need to pay a $451 fee. If you are applying for the “Journeyman Plumber” and “Master Plumber” licenses, you will need to pay a $500 fee. You may also be required to pay additional fees for any exams you may need to take to qualify for the license.


You need to be aware of the Colorado plumbing licensing requirements and regulations to practice plumbing legally. Licensing is a state-mandated requirement for all plumbers in the state. The Colorado Department of Regulatory Agencies provides licenses for plumbers and other professionals and offers resources for those who need to become licensed.

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