What Does It Take To Get a Plumbing License? (Step-by-Step Guide)

Thinking about becoming a plumber—but not sure what does it take to get a plumbing license? You’re not alone. Thousands of aspiring tradespeople ask this every year, especially as demand for skilled plumbers continues to rise across the U.S. Whether you’re switching careers or just starting out, this guide breaks down everything you need—step by step—in plain, friendly terms.

Why Do You Need a Plumbing License?

In nearly every U.S. state, working as a plumber without a license is illegal—especially for jobs involving gas lines, sewage systems, or structural plumbing. A license protects both you and your clients by ensuring you meet safety and competency standards.

According to the U.S. Bureau of Labor Statistics (BLS), employment of plumbers is projected to grow 5% from 2022 to 2032, faster than the average for all occupations. That means now is a great time to get licensed and enter a stable, in-demand field.

What Are the General Requirements to Get a Plumbing License?

While exact rules vary by state, most licensing boards require the following:

1. Minimum Age: Typically 18 years old.
2. High School Diploma or GED: Basic education is a must.
3. Work Experience: Usually 2–5 years as an apprentice or journeyman.
4. Passing a Licensing Exam: Covers plumbing codes, safety, and local regulations.
5. Background Check: Some states require a clean criminal record.

💡 Pro Tip: Always check your state’s plumbing board website—requirements can differ significantly between, say, Texas and New York.

For a national overview of trade licensing, see Wikipedia’s entry on vocational licensing in the United States .

Step-by-Step: How to Get Your Plumbing License

Step 1: Complete a High School Diploma or Equivalent

You’ll need foundational math, reading, and problem-solving skills. Courses in algebra, physics, or shop class are helpful but not mandatory.

Step 2: Enroll in a Plumbing Apprenticeship

Most states require 4,000–8,000 hours of hands-on training (roughly 2–5 years). Apprenticeships combine paid on-the-job work with classroom instruction.

• Where to find one:
  • Local unions (e.g., UA – United Association)
  • Trade schools
  • Community colleges
  • Private contractors approved by your state

📊 Stat: The U.S. Department of Labor reports over 50,000 plumbing apprentices registered nationwide as of 2023.

Step 3: Work as a Journeyman Plumber (If Required)

Some states (like California and Illinois) require you to hold a journeyman license before applying for a master plumber license. This usually involves:

• 2+ years of post-apprenticeship experience
• Passing a journeyman exam

Step 4: Study for and Pass the Plumbing License Exam

Exams test your knowledge of:

• The Uniform Plumbing Code (UPC) or International Plumbing Code (IPC)
• Local amendments
• Blueprint reading
• Math for pipe sizing and pressure calculations

Exam Tips:

• Use official study guides from your state board
• Take practice tests (many states offer them online)
• Allow 4–8 weeks of dedicated study time

Step 5: Submit Your Application & Pay Fees

Fees vary widely:

Note: Renewal fees and continuing education may apply later.

Step 6: Get Bonded and Insured (For Contractors)

If you plan to run your own plumbing business, most states require:

• Surety bond ($5,000–$15,000)
• Liability insurance ($300–$1,000/year)

This protects clients if something goes wrong on the job.

State-by-State Differences: What You Should Know

Not all plumbing licenses are created equal. Here’s how a few states compare:

Always verify current rules on your state’s official licensing website—they change frequently.

Common Mistakes to Avoid

• ❌ Skipping the apprenticeship: Trying to test out without experience rarely works.
• ❌ Ignoring local codes: National codes are a base—your city may have stricter rules.
• ❌ Missing renewal deadlines: Letting your license lapse can mean restarting the process.
• ❌ Not keeping records: Track every hour of work—some states audit your experience.

Benefits of Getting Licensed

• Higher Earnings: Licensed plumbers earn 20–40% more than unlicensed helpers (BLS, 2024).
• Legal Protection: You can pull permits and work independently.
• Career Flexibility: Move into inspection, teaching, or business ownership.
• Client Trust: A license signals professionalism and reliability.

FAQ Section

Q1: How long does it take to get a plumbing license?

A: Typically 2–5 years, depending on your state’s experience requirements and how quickly you complete your apprenticeship and pass exams.

Q2: Can I get a plumbing license with a felony?

A: It depends. Some states conduct case-by-case reviews. Be honest on your application—lying can lead to permanent disqualification.

Q3: Do I need a license for small plumbing jobs?

A: In most states, yes—even minor work like installing a water heater often requires a licensed plumber. DIY is usually only allowed for homeowners on their own property.

Q4: Is there a national plumbing license?

A: No. Plumbing licenses are issued at the state or local level. However, some states offer reciprocity if you’re already licensed elsewhere.

Q5: How much does plumbing school cost?

A: Apprenticeships are often free or low-cost (you earn while you learn). Trade school programs range from $1,000 to $15,000, but aren’t always required.

Q6: Can I work while getting licensed?

A: Yes! Most apprentices are paid employees. You’ll work under a licensed plumber while logging your required hours.

Conclusion

So, what does it take to get a plumbing license? Dedication, hands-on experience, and a commitment to mastering your craft—but the payoff is huge. With strong job security, solid income, and the pride of skilled work, plumbing remains one of America’s most rewarding trades.

Ready to start?
✅ Check your state’s plumbing board website today
✅ Apply for an apprenticeship program
✅ Share this guide with someone who’s considering a career in the trades!

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