Becoming a licensed plumber in Maryland doesn’t just open the door to better job opportunities — it gives you professional independence, recognition, and long-term stability.
The process of obtaining a Plumbing License in Maryland consists of three main stages: Apprentice, Journeyman, and Master.
Each represents a higher level of experience, responsibility, and authority in the field.
In this complete guide, we’ll walk you through each step, explain the requirements for every license, and show how HDS Biz Solutions can help you achieve success.
Types of Plumbing Licenses in Maryland
Maryland’s plumbing license system was designed to ensure professionals advance progressively through practical experience, supervision, and technical education.
Here’s how each stage works:
Apprentice License
The Apprentice License is the starting point for anyone who wants to enter the plumbing or gas fitting field in Maryland.
Types of Apprentices
Apprentice Plumber/Gas Fitter
- Works under the supervision of a Master Plumber/Gas Fitter or a Master Natural Gas Fitter.
- Hours earned under a Master Plumber/Gas Fitter count toward the Journeyman Plumber/Gas Fitter license.
- Hours earned under a Master Natural Gas Fitter count only toward the Journeyman Natural Gas Fitter license.
Apprentice Natural Gas Fitter Only
- Works exclusively with natural gas under the supervision of a Master Plumber/Gas Fitter or Master Natural Gas Fitter.
- All hours apply toward the Journeyman Natural Gas Fitter license.
Requirements and Key Details
- No initial exam required.
- Must be registered with the state as an active apprentice.
- License must remain valid while accumulating hours.
- From the beginning, the applicant must choose whether to follow the Plumbing + Gas route or Natural Gas Only route.
Journeyman License
The Journeyman License is the next step, allowing you to work more independently.
There are two different paths to obtain it:
1. Through a Formal Apprenticeship Program (No Exam Required)
- Complete 7,500 hours of supervised experience (approximately 4 years).
- Up to 1,500 hours may come from approved technical studies.
- Complete a mandatory 32-hour Backflow Prevention course.
- No state exam required.
2. By Exam (Without a Formal Program)
- Must have worked at least 4 years as a licensed apprentice.
- Pass the state exam (also available in Spanish).
Key Points
- A Journeyman can work independently on projects but cannot yet open their own business.
- This level represents a major professional step toward independence.
Master Plumber License
The Master Plumber License is the highest level in Maryland’s licensing system, granting full autonomy to operate independently.
Requirements
- Hold a valid Journeyman license.
- Have at least 2 years of experience under a Master’s supervision.
- Pass the state exam (also available in Spanish).
Advantages of Being a Master Plumber
- Ability to open your own business, hire employees, and sign plumbing permits.
- Recognition as an industry expert.
Opportunity to manage large-scale projects and increase your income potential.
How HDS Biz Solutions Helps You
At HDS Biz Solutions, we guide you from your initial apprentice registration all the way to earning your Master license.
Our team ensures your process is fast, clear, and error-free.
Our Services
- Registration of apprentices in the state portal.
- Guidance to choose the best route toward Journeyman (formal program or exam).
- Enrollment in mandatory courses (e.g., Backflow).
- Exam preparation and support (when applicable).
- Ongoing guidance until you achieve your Master Plumber License.
Benefits of Having a Plumbing License in Maryland
Job Stability and High Demand
Licensed plumbers are in high demand across residential, commercial, and contracting sectors.
Professional Growth Opportunities
The licensing system allows you to advance step by step, gaining experience and increasing your income.
Legal Compliance and Credibility
Holding a license ensures your work meets state regulations — avoiding fines or penalties.
Total Independence
With a Master license, you can open your own business and work freely with full professional credibility.
Tips to Advance Faster
- Start as soon as possible: Apprentice registration doesn’t require an exam.
- Track your work hours: They’re essential for the Journeyman application.
- Take complementary courses: Estimation, blueprint reading, and safety training help you prepare better.
- Take advantage of Spanish exams: Available for both Journeyman and Master levels.
- Seek expert guidance: At HDS, we help you avoid mistakes and speed up the process.
Ready to Start Your Plumbing Career in Maryland?
At HDS Biz Solutions, we help you register, train, and advance from apprentice all the way to becoming a Master Plumber.
