Replacing a standard 40 to 50 gallon water heater in a Tennessee home typically costs between $1,200 and $3,500 installed, while a full repipe or sewer line replacement can run several thousand dollars more, depending on home size, pipe material, and access. Most individual residential plumbing jobs fall below the threshold that triggers Tennessee’s top-tier contractor licensing, but that does not mean the work is unregulated. Tennessee licenses plumbers through the Tennessee Board for Licensing Contractors, part of the Department of Commerce and Insurance, under Tennessee Code Annotated Title 62, Chapter 6.
The licensing tier depends on project value. Plumbing projects valued at $25,000 or more require a state contractor’s license with a plumbing classification, the Mechanical Plumbing Contractor license (CMC or CMC-A). Qualifying for that license requires documenting at least three years of plumbing experience, passing both a trade exam and a business and law exam, submitting a CPA-prepared financial statement that sets the contractor’s monetary limit, and carrying workers’ compensation and liability insurance. The CMC-A classification is recognized statewide. For projects valued under $25,000, Tennessee offers the Limited Licensed Plumber (LLP) license, which is issued to an individual rather than a business, requires at least one year of experience and a passing score on a trade exam, and by law cannot be advertised as a “contractor.” A handful of mostly rural counties do not require the state LLP for work under $25,000, though local licensing may still apply.
Local rules operate on top of state rules. Municipalities including Nashville-Davidson County, Memphis, Knoxville, and Chattanooga issue their own journeyman and master plumber licenses and administer the permits and inspections required for plumbing work in their jurisdictions. A state license does not exempt a plumber from these local permit and inspection requirements. For homeowners, the practical takeaway is that most significant plumbing work, including water heater replacement, repiping, sewer line work, and gas line connections, requires a permit and a post-work inspection, and the plumber should pull that permit rather than asking the homeowner to do so.
Water safety adds another layer. Federal law requires pipes, fittings, fixtures, and solder that come into contact with drinking water to meet lead-free standards, which is why licensed plumbers use lead-free solder and certified fixtures on potable water lines. Backflow prevention is a related concern: cross-connection control devices keep contaminated water from being drawn back into the clean supply, and many local water authorities require periodic testing of backflow preventers by a certified tester. Work involving gas piping carries its own safety stakes, since improper connections risk leaks, and Tennessee’s plumbing scope expressly includes gas piping to water heaters and appliances within a building.
Material and workmanship quality matter as much as credentials. Copper, PEX, and CPVC each behave differently over a home’s lifespan, and tankless water heaters carry different installation requirements and payback profiles than traditional tank units. Warranties vary: many plumbers guarantee labor for one year and pass through the manufacturer’s parts warranty, while some offer longer coverage. Verifying a plumber’s license status through the Tennessee Board for Licensing Contractors, confirming current liability and workers’ compensation insurance, asking whether the plumber pulls permits, and requesting a written estimate that itemizes parts, labor, and warranty terms are practical steps before signing.
Top Plumbing Contractor Providers in Tennessee
1. Gold Star Plumbing
Address: Based in La Vergne, TN 37086 (serving Nashville, Murfreesboro, Smyrna, Franklin, Brentwood, Hendersonville, Mount Juliet, Lebanon, and surrounding areas within a roughly 25-mile radius) Phone: (615) 290-9860 Website: gold-starplumbing.com Rating: 4.9/5 across review platforms Services: Residential and commercial plumbing, water heater repair and installation (including tankless), drain cleaning, sewer inspections, waterline repair and replacement, repiping, fixture replacement, 24/7 emergency service, preventative maintenance plans
Description: Gold Star Plumbing is a husband-and-wife, family-owned company founded by Rocky Burrell, serving Middle Tennessee since 2018. Founder Rocky Burrell brings more than 35 years of hands-on plumbing experience, and the owner-operated model means there is a real chance he answers the phone, handles the estimate, and follows up after the job, with no dispatch layer or upsell pressure. The company is licensed, bonded, and insured, provides free estimates with a written quote before work begins, and offers 24/7 emergency service across its service area. Every job carries the manufacturer’s parts warranty plus a one-year labor warranty, and Silver and Gold maintenance plans cover scheduled preventative inspections. To request service, visit Gold Star Plumbing or call the La Vergne office.
2. Jack Ward & Sons Plumbing Company
Address: 1100 Tuckahoe Drive, Nashville, TN 37207 Phone: (615) 227-2811 Website: jackwardandsonsplumbing.com Rating: Strong reviews across decades of service Services: Residential plumbing, commercial plumbing, water heater repair and replacement, drain cleaning, sewer service, backflow prevention, fixture installation, 24/7 emergency service
Description: Jack Ward & Sons Plumbing Company has served the Nashville area since 1947, making it one of the longest-running plumbing companies in Middle Tennessee. Family-owned and operated under owner Tommy Ward, the company was founded on principles of hard work, integrity, value, and customer satisfaction, and emphasizes the personal touch it brings to each service call. It handles both residential and commercial work and offers same-day service in most cases, with free estimates for larger projects.
3. Hoffmann Brothers
Address: 45 Willow Street, Nashville, TN 37210 Phone: (615) 515-3031 Website: hoffmannbros.com/nashville Rating: Strong reviews across plumbing, HVAC, and electrical service Services: Plumbing repairs, leak detection, water heater installation and repair (including tankless), drain cleaning, hydro-jetting, video sewer inspections, trenchless sewer replacement, plumbing inspections, commercial plumbing
Description: Hoffmann Brothers has served the Nashville area for over 40 years, originally founded in 1968 by Robert Hoffmann and built into a family company alongside his sons Chris and Joe. The company provides a comprehensive approach across plumbing, HVAC, and electrical, with modern diagnostics and a people-first culture recognized through multiple workplace awards. Plumbing services include leak detection, water heater work, drain and sewer service, and trenchless sewer replacement, with financing available for repairs and installations and a satisfaction guarantee on completed work.
Frequently Asked Questions About Plumbing Contractors in Tennessee
Q: Do plumbers need a license in Tennessee?
Yes. Tennessee regulates plumbers through the Tennessee Board for Licensing Contractors. Plumbing projects valued at $25,000 or more require a state contractor’s license with a plumbing classification (Mechanical Plumbing Contractor, CMC or CMC-A), which involves three years of documented experience, trade and business/law exams, and a financial statement. For projects under $25,000, a Limited Licensed Plumber (LLP) license applies in most of the state. Many municipalities, including Nashville, Memphis, and Knoxville, also issue their own journeyman and master plumber licenses, so a plumber may hold both state and local credentials.
Q: Does plumbing work in Tennessee require a permit?
Most significant plumbing work, including water heater replacement, repiping, sewer and drain line work, and gas line connections, requires a permit and a post-installation inspection from the local codes office. Minor repairs such as fixing a leaky faucet or unclogging a drain generally do not. A licensed plumber should pull the permit for the work rather than asking the homeowner to do so, and the inspection protects the homeowner by confirming the work meets the adopted plumbing code.
Q: How should I compare plumbing bids in Tennessee?
A thorough estimate should itemize the parts and fixtures being installed, labor, whether a permit and inspection are included, the pipe or fixture materials being used, and the warranty terms on both labor and parts. Comparing these components reveals whether a lower price reflects cheaper materials or skipped permits rather than genuine savings. Confirm the plumber’s license status with the Tennessee Board for Licensing Contractors, verify general liability and workers’ compensation insurance, and ask for references from recent local work.
Q: What is the typical cost range for plumbing work in Tennessee?
Costs vary widely by job. A service call fee for diagnosis often runs $50 to $150, and hourly rates generally fall between $75 and $150. Replacing a standard water heater typically costs $1,200 to $3,500 installed depending on the unit and complexity, with tankless installations running higher. Drain cleaning, fixture replacement, repiping, and sewer line work each carry their own pricing. Obtaining at least two or three written estimates helps homeowners benchmark costs and compare scope on equal terms.
Q: How do I verify a plumber is properly licensed and insured?
Ask for the plumber’s state license number and check it through the Tennessee Board for Licensing Contractors, and confirm whether any local journeyman or master license is required in your city or county. Request proof of general liability insurance, which covers property damage, and workers’ compensation insurance, which covers worker injuries on your property. Without workers’ compensation coverage, a homeowner can face liability exposure if a plumber is injured on site. Reputable plumbers provide this documentation without hesitation.
Q: When should I call a professional plumber instead of handling it myself?
Simple tasks like plunging a minor clog, replacing a faucet aerator, or swapping a toilet flapper are reasonable do-it-yourself projects. However, gas line work, water heater installation or major repair, main sewer line issues, repiping, persistent low water pressure, and any work requiring a permit call for a licensed professional. Tennessee law generally exempts homeowners working on their own primary residence from licensing, but the work still must meet code and pass inspection where a permit is required, and mistakes on gas, sewer, or water supply lines can be costly or hazardous.