Plumbing license requirements in Maryland
The Maryland State Board of Plumbing issues plumbing licenses in Maryland. Here's what each license level takes, from the official rules.
License levels
In order, from the first license to the top one.
- 1
Journey Plumber
At least four years as a licensed apprentice with 7,500 hours of training under a master plumber, plus 32 hours of backflow prevention training. Then the exam.
Official source - 2
Master Plumber
3,750 hours as a journey plumber under a master plumber and, for Maryland residents, a journey license held for at least two years, plus the backflow training. Then the exam.
Official source
Rules, fees and exam schedules change. Confirm the details with the Maryland State Board of Plumbing before you apply.
Plumbers in Maryland
From the Bureau of Labor Statistics. See a city for local wages and contractor counts.
- Plumbers employed
- 11,420
- Median hourly wage
- $31.44
Plumbing market data by city
Once you're licensed
Tradesman runs the business side for plumbers: estimates, scheduling, invoicing and payments in one app.
Plumbing licensing in Maryland: common questions
Who issues plumbing licenses in Maryland?
The Maryland State Board of Plumbing. The license levels and what each takes are listed above, with a link to the official source for each.
What does the Master Plumber license take in Maryland?
3,750 hours as a journey plumber under a master plumber and, for Maryland residents, a journey license held for at least two years, plus the backflow training. Then the exam.
What's the first plumbing license in Maryland?
The Journey Plumber. At least four years as a licensed apprentice with 7,500 hours of training under a master plumber, plus 32 hours of backflow prevention training. Then the exam.
Licensed and ready for more customers?
Tradesman handles estimates, scheduling and invoicing so you can spend your time on the work. Now in early access.