---
title: "Master Plumber: Requirements, Exam and What It Allows"
description: "What a master plumber license is, the extra experience after journeyman, the exam, permits, and why contractors need a master on the license."
url: https://shapemycareer.com/licensing/master-plumber/
updated: 2026-10-10
site: ShapeMyCareer
---

Licenses · Master plumber

# Master plumber

The license to pull permits and run plumbing work.

Plumbing license, level three

Master plumbers carry responsibility for the work. In many places, only a master can pull permits, and a plumbing company needs one on the license to operate.

In short

A master plumber usually needs one or more years of experience as a licensed journeyman, sometimes more, plus a master exam that adds system design, sizing, code administration and sometimes business and law. In many states, masters pull permits, supervise journeymen and apprentices, and serve as the qualifying license for a plumbing contractor. Each state or city sets its own rules.

**Sources checked October 10, 2026** Pay, training and outlook come from the U.S. Bureau of Labor Statistics. Pay is the middle (median) figure nationally; your first paycheck in the trade will usually be lower.

## What changes at master

- You sign for permits and inspections
- You design and size whole systems
- You can supervise other plumbers
- You can usually qualify a plumbing business

## Pay

Plumbers in the top 10 percent earned more than $108,420 in May 2025, and many of them are masters running service work or crews.

### Thinking ahead to master?

Tell us your ZIP and we will send plumbing training near you.

[Find training near me](#smc-form)

## Straight answers

### How long does it take to become a master plumber?

Often six to eight years from the start of an apprenticeship, depending on the state.

### Do I need a master license to start a plumbing business?

In many states, a plumbing business needs a master on the license. Check your state board.

### Is a master plumber the same as a plumbing contractor?

Not always. Some states license contractors separately from individual plumbers.

## Where this comes from

- [BLS Employment Projections, Table 1.2 (2025 to 2035)](https://www.bls.gov/emp/tables/occupational-projections-and-characteristics.htm)
- [Plumbers, pipefitters, and steamfitters in the BLS Occupational Outlook Handbook](https://www.bls.gov/ooh/construction-and-extraction/plumbers-pipefitters-and-steamfitters.htm)
- [BLS OOH: Plumbers, Pipefitters, and Steamfitters](https://www.bls.gov/ooh/construction-and-extraction/plumbers-pipefitters-and-steamfitters.htm)
- [International Code Council (model codes including the IPC and IMC)](https://www.iccsafe.org/)
- [IAPMO (Uniform Plumbing Code)](https://www.iapmo.org/)

## Keep looking

- [Journeyman plumber](https://shapemycareer.com/licensing/journeyman-plumber/)
- [Plumber salary](https://shapemycareer.com/salary/plumber/)
- [Plumbing apprenticeship](https://shapemycareer.com/apprenticeships/plumbing/)
- [Licenses](https://shapemycareer.com/licensing/)
- [Class A vs Class B](https://shapemycareer.com/licensing/cdl-class-a-vs-class-b/)
- [How to get a CDL](https://shapemycareer.com/licensing/how-to-get-a-cdl/)
- [HVAC license](https://shapemycareer.com/licensing/hvac-license/)
- [Journeyman electrician](https://shapemycareer.com/licensing/journeyman-electrician/)

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