Thinking about fixing a leaky faucet or installing new pipes in Tennessee? Before you grab your wrench, you might be asking: “Do you need a plumbing license in Tennessee?” The answer isn’t always simple—it depends on who you are, what you’re doing, and how complex the job is. Whether you’re a DIY homeowner or an aspiring plumber, understanding Tennessee’s licensing rules can save you from fines, safety hazards, or even legal trouble. Let’s break it down clearly and confidently.
What Does Tennessee Law Say About Plumbing Licenses?
Tennessee requires any individual or company performing plumbing work for compensation to hold a valid plumbing license issued by the Tennessee Board for Licensing Contractors (TBLC). This includes residential, commercial, and industrial plumbing services.
According to the TBLC, unlicensed plumbing work—especially when done for pay—is a Class A misdemeanor, which can result in fines up to $1,000 per violation or even jail time.
Important Note: Homeowners doing plumbing work on their own primary residence are generally exempt from licensing requirements—as long as they’re not hiring themselves out or performing work on rental or investment properties.
If you’re offering plumbing services for money, you must be licensed. This includes:
Installing or repairing water supply lines
Working on gas piping systems
Installing or modifying drainage systems
Connecting to public sewer or water lines
❌ Homeowners (With Limits)
You do not need a license if:
You live in the home you’re working on
You’re doing the work yourself (not hiring subcontractors under your name)
The property is not for rent, sale, or commercial use
However, all work must still comply with the Tennessee Statewide Building Code, including inspections and permits.
💡 Pro Tip: Even as a homeowner, consider hiring a licensed plumber for gas lines or sewer connections—mistakes here can be dangerous and expensive to fix.
Types of Plumbing Licenses in Tennessee
Tennessee offers two primary plumbing license classifications:
CMC-A (Plumbing)
General contractors managing plumbing projects
Pass trade & business exams; show 3+ years of experience; carry insurance
Pass residential plumbing exam; 2+ years of experience; insurance required
Both licenses require:
Application to the TBLC
Proof of liability insurance ($300,000 minimum)
Passing a state exam (administered by PSI)
Background check
📊 Stat Insight: In 2024, the TBLC reported that over 1,200 plumbing license applications were processed statewide, with a 78% first-time pass rate on exams.
Step-by-Step: How to Get a Plumbing License in Tennessee
If you’re ready to become a licensed plumber in TN, follow these 5 concrete steps:
Gain Qualifying Experience
Minimum 2 years for Residential (R-P)
Minimum 3 years under a licensed plumber for CMC-A
Experience must be documented (employer verification required)
⚠️ Warning: Operating without a license—even with “just helping a friend for cash”—can trigger legal penalties. The TBLC actively investigates complaints and conducts random audits.
What Happens If You Work Without a License?
Tennessee takes unlicensed contracting very seriously. Consequences include:
Fines up to $1,000 per violation
Cease-and-desist orders halting your work
Inability to collect payment (courts often side with clients in unlicensed disputes)
Criminal charges in repeat or high-risk cases (e.g., gas line errors)
In 2023, the TBLC issued 42 enforcement actions against unlicensed plumbing contractors—many for jobs under $5,000.
Common Misconceptions About Plumbing Licenses in TN
Let’s clear up a few myths:
❌ “Handyman work doesn’t count as plumbing.” → If you’re touching water lines, drains, or gas pipes—even as a handyman—you likely need a license.
❌ “I can just work under someone else’s license.” → Only if you’re a W-2 employee. Independent “subcontractors” using another’s license is illegal.
❌ “Small jobs don’t need permits.” → Most municipalities (like Nashville or Memphis) require permits for any plumbing modification, licensed or not.
FAQs: Do You Need a Plumbing License in Tennessee?
Q1: Can I do plumbing work on my rental property without a license? A: No. Tennessee law states that any plumbing on non-owner-occupied properties requires a licensed plumber—even if you own the building.
Q2: How much does it cost to get a plumbing license in Tennessee? A: Expect to pay around $400–$600 total, including application ($200), exam fees (~$90), insurance setup, and study materials.
Q3: Are there exemptions for emergency repairs? A: No. Even emergency plumbing (e.g., burst pipes) must be done by a licensed professional if you’re being paid.
Q4: Can I get a license with a felony record? A: Possibly. The TBLC reviews criminal history on a case-by-case basis. Minor offenses may not disqualify you, but honesty on your application is critical.
Q5: Do I need a local permit even if I’m licensed? A: Yes. Licensing and permitting are separate. Your city or county (e.g., Knoxville, Chattanooga) will still require permits and inspections for most plumbing work.
Q6: How long does the licensing process take? A: Typically 4–8 weeks, depending on exam scheduling, background checks, and document processing.
Conclusion
So, do you need a plumbing license in Tennessee? If you’re getting paid to install, repair, or modify plumbing systems—yes, absolutely. If you’re a homeowner working on your own house, you’re likely exempt—but always follow code and get inspections when needed.
Understanding these rules protects you, your clients, and your community. Plumbing mistakes can lead to water damage, gas leaks, or health hazards—licensing exists to prevent those risks.
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