How to Become a Licensed Plumber in 2026
The Complete Career Guide
Start earning immediately. No student debt. Licensed by your mid-20s. This guide covers every step from high school to master plumber, with salary data at each stage so you can see exactly what the financial trajectory looks like.
Year 1-5
Apprentice
$33,000-$58,000
Year 5-8
Journeyman
$55,000-$80,000
Year 8+
Master Plumber
$70,000-$105,000
Year 10+
Business Owner
$80,000-$250,000
Step-by-Step Career Path
From zero experience to master plumber. Each step shows what you do, how long it takes, what you earn, and what it costs. The key fact: you earn money at every stage past the first step.
Meet Basic Requirements
Cost: Free
- High school diploma or GED (most programs require this)
- At least 18 years old (some states allow 17 with parental consent)
- Valid driver's licence with clean record
- Physical ability: lift 50+ lbs, work in confined spaces, stand for extended periods
- Basic math skills: fractions, decimals, measurements, basic geometry
- No specific prior experience required
Enter an Apprenticeship Program
Cost: Free (union) or $1K-$5K (non-union trade school)
- 8,000-10,000 hours of supervised on-the-job training
- 200-576 hours of classroom instruction (varies by state)
- Learn pipefitting, blueprint reading, code compliance, safety, soldering, and troubleshooting
- Pay starts at 40-50% of journeyman rate and increases each year
- Union apprenticeships include health insurance and pension from day one
- Two paths: UA union JATC program (free, structured) or non-union direct hire (faster start, less structure)
Pass the Journeyman Exam
Cost: $100-$500 exam fee (varies by state)
- Written exam covering plumbing codes, safety regulations, and technical knowledge
- Some states also require a practical exam (hands-on plumbing tasks)
- Study materials available from your state's plumbing board and the International Code Council
- Most apprenticeship programs include exam preparation in the final year
- Pass rate varies by state but is typically 60-80% on first attempt
- Once licensed, you can work independently on residential and commercial jobs
Work as a Journeyman Plumber
Cost: Licence renewal: $50-$200/yr
- Full independence on job sites: troubleshoot, install, and repair without supervision
- Can specialise in higher-paying areas: commercial, pipefitting, steamfitting, gas work
- Build your professional network and reputation for future business ownership
- Gain the experience hours required for the master plumber exam (varies by state: 2-5 additional years)
- This is where many plumbers decide between the union career track or self-employment
- Continuing education required in most states (8-24 hours per renewal period)
Earn Your Master Plumber Licence
Cost: $200-$800 exam fee
- Comprehensive exam covering advanced plumbing design, code interpretation, and business practices
- Most states require 2-5 years of journeyman experience before you can sit for the master exam
- Master licence allows you to: pull permits, design plumbing systems, supervise apprentices
- Required to own and operate a plumbing business in most states
- Can bid on commercial and government contracts that require a master licence holder
- Some plumbers skip this step and stay as highly paid journeymen, especially in union positions
Choose Your Path: Specialise or Start a Business
Cost: Business startup: $27K-$76K
- Self-employment: start your own plumbing business (solo operator to multi-crew shop)
- Specialise: steamfitting ($81K avg), pipefitting ($62K-$107K), plumbing engineering ($107K+)
- Management: become a plumbing foreman, superintendent, or project manager
- Teaching: train the next generation as an instructor in apprenticeship programs
- Inspection: become a plumbing inspector for your city or county (steady hours, good benefits)
- Many paths lead to six-figure income without owning a business
Licensing Requirements Vary by State
There is no national plumber licence. Each state (and in some cases, each county or city) sets its own requirements. Here are the key areas where states differ.
Apprenticeship Hours
Most states require 8,000-10,000 hours of on-the-job training (4-5 years at full-time). Some states like California require 8,000 hours while states like New York require 10,000. Classroom hours range from 200 to 576 depending on the state.
Licence Levels
Most states use a tiered system: apprentice, journeyman, and master. Some states add additional levels (like residential vs commercial licences). A few states do not require any state-level licence and defer to local municipalities.
Master Licence Requirements
To earn a master plumber licence, most states require 2-5 years of journeyman experience plus passing a comprehensive written exam. Some states require proof of business management knowledge. The master licence is typically required to own a plumbing business and pull permits.
Reciprocity Between States
Some states have reciprocity agreements that allow licensed plumbers from one state to work in another without retesting. However, most require you to apply for a new licence and potentially take their state exam. If you plan to relocate, check the target state's plumbing board before moving.
For state-specific salary data and how licensing requirements affect pay, see our 50-state salary comparison.
Is Plumbing a Good Career? An Honest Assessment
We will not sugarcoat it. Plumbing is a physically demanding job that sometimes involves unpleasant conditions. But the financial rewards, job security, and career trajectory are among the best of any career that does not require a college degree.
Advantages
- + Median salary $62,970 with path to $100,000+ (no degree required)
- + 44,000 job openings per year through 2034 (strong demand)
- + Zero student debt - earn while you learn from day one
- + Recession-resistant: pipes always need fixing regardless of the economy
- + Clear path to business ownership and six-figure income
- + Work with your hands - different job every day, never stuck at a desk
- + Skilled trade means you can work anywhere in the country
- + Strong union option with pension, health insurance, and job security
Challenges
- - Physically demanding: crawl spaces, digging, heavy lifting, kneeling
- - Exposure to sewage, chemicals, and tight/uncomfortable spaces
- - 4-5 year apprenticeship before reaching full earning potential
- - Irregular hours: emergency calls at 2 AM, weekend work
- - Hard on the body long-term (knees, back, shoulders)
- - Outdoor work in extreme weather conditions
- - Risk of injury (cuts, burns, falls, chemical exposure)
- - Social stigma - some people undervalue trade work (their loss)
Median Salary
$62,970
Job Growth
+4%
through 2034
Annual Openings
44,000
Total Employed
427,300
Plumbing vs Other Trades
How does a plumbing career compare to other skilled trades? Here is a quick comparison on the factors that matter most.
| Trade | Median Salary |
|---|---|
| Plumber | $62,970 |
| Electrician | $61,590 |
| HVAC Technician | $57,300 |
| Welder | $48,000 |
Plumbers and electricians are the two highest-paid standard trades and have similar career paths. See our detailed plumber vs electrician comparison for a head-to-head breakdown.
Ready to Get Started?
Apprentice Pay Guide
Year-by-year salary progression, union vs non-union paths, and the trade vs college financial comparison
Read moreUnion vs Non-Union
Total compensation comparison including pension, health insurance, and the full benefits package
Read moreBest States for Plumbers
All 50 states ranked by salary and cost of living. Find the best market for your career
Read more