A plumbing license is what lets you legally pull permits, sign off on work, and run your own plumbing business. Working under someone else, you are usually covered by their license. The day you want to go out on your own, you need your own credential. This guide walks through how licensing works, the ladder you climb, and how to get licensed in your state.
Does every state license plumbers?
No, and this trips a lot of people up. Some states license plumbers at the state level through one board (Texas is a clean example). Some license at the contractor level instead of an individual journeyman license (California). And a few states, like New York and Pennsylvania, have no statewide plumbing license at all, leaving it to cities and counties. Because of that, the first question is always: where will you work? Find your state on the plumbing license by state hub for the exact board, tiers, and requirements.
The plumbing license ladder
Most states use some version of the same ladder. You climb it by logging supervised hours and passing an exam at each step.
- Apprentice: Where you start. You register with the board (or work under a licensed plumber locally) and log hours on real jobs under supervision. This is where your required hours begin counting.
- Journeyman: You can do plumbing work on your own, usually after a few thousand hours and a journeyman exam. In many states you still work under a master to pull permits.
- Master plumber: The top of the individual ladder. A master can design systems, pull permits, supervise others, and take responsibility for a company’s plumbing work.
- Plumbing contractor: The business license. Some states (like California’s C-36) license the contractor rather than the individual, and this is what you need to bid and run jobs as a company.
Typical requirements
Specifics vary by state, but the pattern is consistent:
- Experience hours: Journeyman levels commonly land around 8,000 hours (roughly four years); contractor licenses often want four years of journey-level experience.
- Exams: Usually a trade exam plus, for contractor or master levels, a business and law exam.
- Bond and insurance: Contractor licenses typically require a surety bond and liability coverage before the license activates.
Always confirm the current hours, fees, and exams with your state board. Requirements change, and boards update them regularly. Your state page links straight to the official board.
How to get licensed, step by step
- Decide where you’ll work and check that state’s rules on the state hub.
- Register as an apprentice and start logging supervised hours.
- Take any required classroom or approved training.
- Pass the exam for the next level (journeyman, then master or contractor).
- File your bond and insurance if your license requires them.
- Apply through the board and, once approved, you can pull permits and run work.
Reciprocity and cost
Some states have reciprocity agreements that let you skip part of the process if you’re already licensed elsewhere, but it is limited and handled case by case. Budget for exam fees, application fees, a bond, and continuing education. Across most states you’re looking at a few hundred dollars in fees plus bond and insurance costs.
Licensed. Now what?
The license is the gate, not the finish line. Once you’re legal to work, the business side kicks in: pricing, insurance, invoicing, and getting customers. Start with how to start a plumbing business, get your rates right with our guide to plumber hourly rates, and line up the right plumbing business insurance before your first job.
Find your state
Licensing is state-specific, so the fastest path is your own state’s page. Head to the plumbing license by state hub and pick where you’ll work for the board, tiers, hours, and exams that apply to you.
FAQ
Do I need a license to work as a plumber?
To pull permits, sign off on work, or run your own plumbing business, yes. As an employee under a licensed plumber or contractor you’re usually covered by their license until you get your own.
How long does it take to get licensed?
Most people reach journeyman in about four years of logged hours, then move up to master or contractor after more experience. It varies by state.
What’s the difference between a journeyman and a master plumber?
A journeyman does plumbing work, often still under a master. A master can design systems, pull permits, supervise others, and take responsibility for a company’s work.
Which states don’t have a statewide license?
Several, including New York and Pennsylvania, license plumbers locally instead of at the state level. Check your state page to see how yours works.
Requirements change. Always confirm the current rules with your state or local licensing board before you apply. This page is a general guide, not legal advice.
