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Plumbing company License Requirements in Shreveport, LA

Last reviewed: September 2026

Quick Answer

You need a Louisiana State Plumbing License (Master or Journeyman) issued by the Louisiana State Plumbing Board, a Shreveport business license from the City of Shreveport, and a local plumbing permit from the Shreveport Building and Code Administration. The state license requires passing an exam and documenting 5 years of apprenticeship or equivalent experience. Applications are submitted to the State Plumbing Board, while local permits are obtained through the City of Shreveport Building Department.

Key Facts

  • •Louisiana requires plumbing contractors to hold a State Plumbing License from the Louisiana State Plumbing Board.
  • •Master plumbers must pass a comprehensive exam covering code, safety, and business management.
  • •Journeyman plumbers require 5 years of apprenticeship or equivalent experience before licensing.
  • •Shreveport requires separate city plumbing permits and business licenses in addition to state credentials.
  • •Operating without a license in Louisiana can result in fines up to $500 per violation and criminal charges.

State Licence Requirements

Licence name

Louisiana State Plumbing License (Master Plumber or Journeyman Plumber)

Issued by

Louisiana State Plumbing Board

Cost

$200-$400

Processing time

4-8 weeks from completed application to license issuance

How to apply

To obtain a Louisiana State Plumbing License, you must first determine your category: Master Plumber (can contract and supervise work) or Journeyman Plumber (can perform work under master supervision). Master Plumber applicants must document at least 5 years of full-time plumbing experience, complete a high school diploma or GED, and pass the Louisiana State Master Plumber Examination covering the Louisiana Plumbing Code, National Plumbing Code, safety standards, and business practices.

Submit your application directly to the Louisiana State Plumbing Board with supporting documentation including proof of experience, education transcripts, and work history verification from previous employers. The application form is available on the State Plumbing Board website (https://dsrc.la.gov). Once your application is approved, you schedule and pay for the examination ($150-$250 depending on license type). The exam consists of multiple-choice questions covering code compliance, installation standards, and regulatory requirements—most candidates need 70-75% to pass.

After passing the exam, you receive your state license, valid for 3 years. Processing typically takes 2-4 weeks from application submission to exam eligibility. Your state license must be renewed every 3 years and you must document 30 hours of continuing education during each renewal period (per Louisiana Administrative Code Title 46 § 4101).

Federal Requirements

Federal regulations applying to plumbing companies include EIN requirements under 26 U.S.C. § 4121 (all businesses with employees must obtain an Employer Identification Number from the IRS). The Environmental Protection Agency (EPA) enforces the Safe Drinking Water Act (42 U.S.C. § 300f et seq.), which applies to any plumbing work involving water supply lines and backflow prevention devices—plumbers must understand federal cross-connection requirements and maintain compliance documentation.

The Occupational Safety and Health Administration (OSHA) regulations (29 U.S.C. § 654 et seq.) require all plumbing contractors to maintain safe working conditions, provide proper training, and follow equipment safety standards. If your company has employees, you must carry workers' compensation insurance as mandated by federal law and obtain an IRS Form I-9 verification of work authorization for all employees.

The Americans with Disabilities Act (ADA, 42 U.S.C. § 12101 et seq.) applies when plumbing work occurs in public accommodations or commercial spaces—you must ensure your installations meet accessibility standards for grab bars, fixture height, and accessibility routes. Additionally, if you handle refrigerants or air conditioning systems connected to plumbing work, EPA Section 608 certification may be required under the Clean Air Act (42 U.S.C. § 7412).

Local & County Requirements

Shreveport requires multiple local permits and authorizations beyond the state plumbing license. First, you must obtain a Shreveport Business License from the City of Shreveport Revenue Department—this is a general business registration that costs $35-$75 depending on your business classification and covers operation within city limits.

Second, you must obtain a local Plumbing Permit for each specific project or job from the Shreveport Building and Code Administration office. These permits ($50-$200 per project) require submitting detailed plans showing the plumbing scope, fixture locations, pipe sizing, and code compliance documentation. The city requires inspections at rough-in stage (before walls close) and final stage (after system completion) before issuing the Certificate of Completion.

Third, if your plumbing business includes a physical office or shop location, you must obtain a Certificate of Occupancy from the city code enforcement office, which may require zoning approval and fire safety inspection. Fourth, Shreveport may require a commercial contractor's license if you employ more than one plumber—verify current requirements with the Shreveport Building Department. Some residential areas may have additional Homeowners Association restrictions requiring approval before starting work. Contact the Shreveport Building and Code Administration at (318) 673-7700 or visit City Hall for current fee schedules and permit requirements.

Total Cost Breakdown

Your first-year startup costs for a plumbing company in Shreveport include multiple required licenses and permits. The Louisiana State Plumbing License (Master Plumber) costs $200-$400 (including examination fees). Initial CE courses to prepare for the exam typically cost $100-$300 through accredited providers.

Local requirements include a Shreveport Business License ($35-$75) and initial Certificate of Occupancy if you operate a physical location ($50-$200 depending on facility size and safety inspections). Your first plumbing project permits average $50-$200 per job—budget for 4-6 project permits your first year if starting with residential work ($200-$1,200 total).

Workers' compensation insurance (required if you hire employees) costs $3,000-$8,000 annually depending on payroll and injury history. General liability insurance covering plumbing work runs $800-$2,000 annually. Vehicle registration and commercial auto insurance add $500-$1,500. Louisiana requires bonding for some commercial contracts—performance bonds cost 1-3% of your contract value ($300-$1,000 for initial small projects).

Supplies, tools, and van equipment (initial investment) range $5,000-$15,000. A realistic first-year total cost is $10,000-$30,000 when combining licensing, insurance, bonding, equipment, and initial operating costs. Renewal costs drop to $3,000-$7,000 annually after the first year (CE, insurance, vehicle registration, and business license renewal only).

Licence Renewal

Louisiana State Plumbing Licenses are valid for 3 years from the date of issue. Your renewal deadline is clearly stated on your license card—mark this date to avoid lapses in licensure. To renew, you must document completion of 30 hours of continuing education (CE) from approved providers, covering topics like code updates, safety standards, and advanced plumbing techniques. The Louisiana State Plumbing Board maintains a list of approved CE providers on its website.

Renewal applications and CE documentation must be submitted to the Louisiana State Plumbing Board at least 30 days before expiration. You can renew online through the State Plumbing Board portal or submit paper applications by mail. The renewal fee is $75-$150, depending on whether you're renewing a Master or Journeyman license. If you miss the deadline, you cannot legally perform plumbing work—your license becomes inactive and you must pay a late fee ($25-$50) plus reapply with current CE documentation. Some CE hours must address Louisiana-specific code changes and ethics.

Local Shreveport business licenses renew annually with the Revenue Department, typically due on your anniversary date. Shreveport business license renewal costs $35-$75 annually. Renew online through the City of Shreveport portal or submit in person at City Hall. If your state license lapses, immediately notify Shreveport to avoid local penalties.

Penalties for Operating Without a Licence

Operating as an unlicensed plumber in Louisiana violates Louisiana Revised Statutes § 37:3522 and carries both civil and criminal penalties. If caught performing plumbing work without a valid state license, you face fines of $100-$500 per violation (the fine increases per day if violation continues). Customers can refuse payment for unlicensed work, and the Louisiana State Plumbing Board can issue cease-and-desist orders preventing you from bidding on further work.

Criminal charges apply if you knowingly misrepresent yourself as a licensed plumber or use an unlicensed apprentice without supervision. Conviction can result in 30 days to 6 months in jail, plus fines up to $500, with mandatory restitution to affected customers (per La. R.S. § 37:3524). The state board actively investigates unlicensed practice through customer complaints and inspection findings—violations are discovered during routine building inspections, customer disputes, or when unlicensed plumbers apply for permits.

Additionally, operating without a license voids your liability insurance—insurance companies will deny claims for work performed by unlicensed contractors, exposing you to personal liability for property damage or injuries. Homeowners and municipalities can sue you for repairs done by unlicensed personnel. Your business license can be permanently revoked by Shreveport, and you can be blacklisted from bidding on municipal contracts for 3-5 years. The Louisiana State Plumbing Board maintains a public registry of license violations accessible to customers, damaging business reputation and future employment prospects.

Get your Louisiana State Plumbing License and Shreveport business permits fast with our guided compliance checklist.

Get notified when licensing rules change

Licensing requirements and fees change periodically. We'll email you when this page is updated.

Frequently Asked Questions

How long does it take to get a Louisiana plumbing license if I already have 5 years of experience?

If you have documented 5 years of full-time plumbing experience (typically 10,000+ hours), the timeline is approximately 4-8 weeks. Your application goes to the Louisiana State Plumbing Board first for verification of experience and credentials—this takes 2-4 weeks. Once approved, you can schedule the Master Plumber exam, which happens within 2-4 weeks depending on exam availability. The exam itself takes 4-6 hours. After passing, your license is issued immediately, often within 1-2 business days. However, if your experience documentation is incomplete or requires verification from multiple previous employers, processing can extend to 8-12 weeks. Start the application process at least 3 months before you plan to begin taking jobs.

Do I need separate permits for residential versus commercial plumbing work in Shreveport?

Yes, Shreveport requires separate permits for residential and commercial work, and the permitting process differs slightly. Residential plumbing permits (for single-family homes or multi-unit residential buildings) typically cost $50-$100 and require plans showing fixture locations and pipe routing. Commercial plumbing permits (for office buildings, retail spaces, industrial facilities) are more expensive ($100-$300+) and require detailed architectural coordination, backflow prevention device documentation, and code compliance with ADA accessibility standards. Both require rough-in and final inspections, but commercial inspections are more thorough and may require third-party certifications for specialized systems (grease traps, medical gas lines, etc.). Always check with the Shreveport Building and Code Administration (318-673-7700) before starting a project to determine which permit category applies—misclassification can result in permit denial and work stoppage.

Can I transfer my plumbing license from another state to Louisiana without retaking the exam?

Louisiana does not have reciprocal licensing agreements with other states. Even if you hold a Master Plumber license in Texas, Mississippi, or another neighboring state, you must take the Louisiana State Master Plumber Examination to practice in Louisiana. The state accepts your out-of-state experience as part of your 5-year requirement (if you have 5+ years in another state, you can satisfy the experience requirement), but you must still pass the Louisiana-specific exam covering Louisiana Plumbing Code, state-specific safety standards, and Louisiana administrative rules. The exam costs $150-$250 and focuses heavily on Louisiana Revised Statutes § 37:3524 and Louisiana Administrative Code Title 46. Processing takes 4-6 weeks from application submission to exam eligibility. Some states' continuing education may transfer, but verify with the Louisiana State Plumbing Board (https://dsrc.la.gov) which CE hours count toward your 30-hour renewal requirement.

What happens if I start performing plumbing work in Shreveport before my license arrives?

You cannot legally perform any plumbing work in Louisiana or Shreveport before your state license is issued—doing so violates Louisiana Revised Statutes § 37:3522 and is treated as unlicensed plumbing practice. Performing even a single repair job (installing a faucet, fixing a leak) before licensure exposes you to fines of $100-$500, criminal charges, and civil liability. Customers can file complaints with the Louisiana State Plumbing Board, which investigates and may issue cease-and-desist orders. Additionally, any work performed without a license is considered void—customers can refuse payment, and you have no legal recourse. Your liability insurance will not cover unlicensed work, leaving you personally responsible for injuries or property damage. If you're waiting for your license to arrive, inform customers of the timeline and wait until your license is in hand before accepting jobs. You can begin bidding and scheduling appointments, but do not perform any work until your license number is active.

Does Shreveport require additional certifications beyond the state plumbing license for specific specialties like backflow prevention or medical gas?

Yes, Shreveport often requires additional certifications depending on the type of work. Backflow prevention device installation and testing must be performed by a certified backflow device technician—this is a separate certification from the Louisiana State Plumbing License and requires passing the EPA-recognized backflow prevention exam ($100-$200). If you install medical gas systems (oxygen, nitrous oxide lines) in hospitals or clinics, you must hold an ASSE (American Society of Sanitary Engineers) certification specific to medical gas installation. Grease trap and interceptor installation requires understanding local environmental codes, and Shreveport may require a separate inspection or certification for commercial kitchen systems.

Check with the Shreveport Building and Code Administration and your local health department to identify which specialties require additional certifications for your target market. Many of these certifications are available through online courses and exams costing $200-$500 each. Having specialty certifications increases your competitiveness and allows you to bid on higher-value commercial projects that require these qualifications.

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Sources & References

  • Louisiana Revised Statutes § 37:3524 — Establishes State Plumbing Board licensing requirements
  • Louisiana Administrative Code Title 46 § 4101 — Details master and journeyman plumber qualifications
  • Louisiana Revised Statutes § 37:3522 — Defines penalties for unlicensed plumbing work
  • Shreveport City Code Chapter 26 — Local plumbing permit and inspection requirements
  • 26 U.S.C. § 4121 — Federal EIN requirements for business registration

Licence requirements change. Verify current requirements with the issuing agency before applying.

Editorial standards: This guide is reviewed against primary government sources and cites 5 statutes. Last reviewed September 2026. Scheduled for re-verification by September 2027.

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