Plumbing contractors in
Knoxville, Tennessee.
A public directory of licensed plumbing contractors serving greater Knoxville. Market data, licensing requirements, and cost benchmarks — updated continuously from public sources.
Common Job Costs
Licensing Requirements
Licensing Requirements
Tennessee requires a plumbing contractor license through the Department of Commerce and Insurance. Must pass state exam, provide 4 years experience or apprenticeship completion, carry $300,000 liability insurance, and pay $300 license fee. Journeyman license requires 2 years experience and separate exam. Renewal every 2 years with 8 hours continuing education.
Permit Requirements
Knoxville requires permits for all plumbing work except minor repairs. Permit fees range $25-150 depending on scope. Applications submitted through Knox County Building Department. Commercial work requires additional health department approval for grease traps and backflow prevention.
Inspection Schedule
Rough-in inspection before covering pipes, final inspection before occupancy. Water heater installations require separate inspection. Backflow device testing annually. Commercial properties require quarterly grease trap inspections.
Insurance Minimums
Tennessee requires minimum $300,000 general liability insurance for contractor license. Workers compensation mandatory for employees. Bonding requirements vary by project size - municipal work often requires performance bonds.
How to Get Licensed
Meet experience requirements
Complete 4 years documented plumbing experience or finish state-approved apprenticeship program. Must be verifiable through employer records or apprenticeship completion certificate.
Obtain required insurance
Purchase minimum $300,000 general liability insurance from approved carrier. Obtain certificate of insurance showing Tennessee Department of Commerce and Insurance as certificate holder.
Submit license application
Complete contractor license application through TN Department of Commerce and Insurance. Include experience documentation, insurance certificates, and $300 application fee.
Schedule and pass state exam
Register for plumbing contractor examination through approved testing provider. Exam covers codes, regulations, business practices. Must achieve 70% passing score.
Complete background check
Submit to state and federal background check as part of licensing process. Any felony convictions or license violations in other states may disqualify applicant.
Receive license and maintain compliance
Upon approval, receive contractor license valid for 2 years. Complete 8 hours continuing education before each renewal. Submit renewal application and $150 fee every 2 years.
About This Market
Knoxville's plumbing market is steady with 1745 licensed establishments statewide competing for work. The city's mix of older homes in downtown areas and new construction in suburbs drives consistent demand. Water main breaks from aging infrastructure and basement flooding issues keep emergency work flowing. Median wage sits at $28.57 hourly, but established contractors charge $85-120 per hour. Competition is fierce for residential service calls, but commercial work and new construction offer better margins.
Working Knoxville means navigating Tennessee's strict licensing requirements and Knox County's permit process. The state exam is no joke - study hard or you'll be retaking it. Winter emergency calls pay premium rates when pipes freeze, but spring construction season is where you build your business. Know the local inspectors, pull permits properly, and keep your insurance current. The health department gets involved on commercial jobs with grease traps, so build those relationships early. Cash flow runs tight between inspection delays and permit processing - plan accordingly.
- Median hourly wageBureau of Labor Statistics Occupational Employment Statistics
- Licensed establishments countUS Census Bureau County Business Patterns
- Licensing requirementsTennessee Department of Commerce and Insurance
- Permit requirementsKnox County Building Department
- Insurance minimumsTennessee Contractor Licensing Board
Frequently Asked Questions
What does a plumbing license cost in Tennessee?
Initial contractor license fee is $300 plus exam fees of approximately $75. Renewal costs $150 every two years. Journeyman licenses cost $100 initially and $50 to renew biennially, according to TN Department of Commerce and Insurance.
How long does it take to get a plumbing license in Tennessee?
Minimum 4 years experience or completed apprenticeship before you can take the contractor exam. Processing takes 4-6 weeks after application submission and exam passage, according to state licensing board timelines.
What's the average hourly rate for plumbers in Knoxville?
Bureau of Labor Statistics reports median wage of $28.57 per hour for employed plumbers. Independent contractors typically charge $85-120 per hour for service calls, with emergency rates 50% higher.
Do I need permits for water heater replacement in Knoxville?
Yes, Knox County requires permits for all water heater installations. Permit fee is typically $50-75. Both rough-in and final inspections required before activation, according to Knox County Building Department.
What insurance do plumbers need in Tennessee?
State requires minimum $300,000 general liability insurance for contractor licensing. Workers compensation mandatory if you have employees. Bonding requirements vary by job - municipal contracts often require performance bonds equal to contract value.
Plumbing contractors in Knoxville
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