Plumbing & Gas · AL · LA · MS · FL
Plumbing & Gas Licensing by State
The board licenses and classifications plumbing and gas-fitting work require in AL, LA, MS and FL.
Alabama
Alabama Plumbers & Gas Fitters Examining Board →
Who / what you need
Journeyman Plumber / Journeyman Gas Fitter
Minimum two years as a registered Apprentice (or board-approved training equal to it) plus the exam. After passing, 90 days to pay fees and certify.
Official page →Master Plumber / Master Gas Fitter
Certified as a Journeyman for at least one year, then the Master exam.
Official page →Apprentice registration
No exam - register with the board with photo ID and fee before working under a licensee.
Official page →Paperwork — in order
1. Plumbing/gas permit - local jurisdiction
Permits come from the city or county where the job sits, pulled under your board license.
Official page →2. Rough-in and final inspections
Scheduled with the local inspector; gas lines typically need a pressure test witnessed before the utility sets or unlocks the meter.
Official page →Watch-outs
- Out-of-state licenses count toward AL certification only if issued off an exam passed at 70% or better.
- Confirm the plumbing/gas code edition your local jurisdiction enforces.
Official page →Louisiana
State Plumbing Board of Louisiana →
Who / what you need
Journeyman Plumber -> Master Plumber
Everyone starts as a registered Apprentice ("must first register as an apprentice"). Journeyman: 7,000 hrs indentured / 8,000 unindentured + exam. Master: requires a current Journeyman license (or PE) + exam.
Official page →Natural Gas Fitter / Master Natural Gas Fitter
Separate gas-fitting licenses with hour requirements similar to the plumbing track.
Official page →Specialties: Medical Gas, WSPS, Residential Limited
Medical Gas (and Verifier) endorsements; Water Supply Protection Specialist (backflow) needs Journeyman/Master + 40-hour tester cert; Residential Plumber Limited covers repair in 1-2 family dwellings.
Official page →Paperwork — in order
1. Plumbing/gas permit - local jurisdiction
Permits from the parish or municipal office where the job sits. Contractor-level work also involves the LSLBC license when over its thresholds.
Official page →2. Rough-in and final inspections
Scheduled with the local inspector; gas pressure tests before meter set.
Official page →Watch-outs
- Apprentice registration is mandatory for ANYONE performing plumbing or gas fitting in Louisiana - crews included.
- Backflow/cross-connection work needs the WSPS endorsement.
Official page →Mississippi
Mississippi State Board of Contractors (MSBOC) →
Who / what you need
MSBOC certificate - Plumbing specialty (under Mechanical)
Test-required classification covering installation, maintenance and repair of commercial and residential plumbing systems.
Official page →Residential Plumbing / Residential Mechanical
Residential Plumbing (test required) is limited to residential plumbing only; Residential Mechanical covers HVAC + plumbing for residential work.
Official page →Paperwork — in order
1. Plumbing/gas permit - local jurisdiction
Permits (and any local journeyman cards) come from the city or county where the job sits.
Official page →2. Rough-in and final inspections
Scheduled with the local inspector; gas pressure tests before meter set.
Official page →Watch-outs
- LP-gas work runs under a separate Mississippi program - confirm the license path before bidding gas scope.
- Confirm MSBOC dollar thresholds for when a certificate is required - they are not stated on the classifications page.
Official page →Florida
DBPR - Construction Industry Licensing Board (CILB) →
Who / what you need
Certified Plumbing Contractor (statewide)
FS 489 Part I certificate of competency - contracts in any Florida jurisdiction without local competency requirements. Scope includes sanitary and storm drainage, venting, water supply and septic tanks.
Official page →Registered Plumbing Contractor (local)
Registered off a local competency card; may contract only in the jurisdictions where registered.
Official page →Paperwork — in order
1. Plumbing/gas permit - local building department
Permits under the Florida Building Code from the county/municipal building department, with your CILB license on the application.
Official page →2. Rough-in and final inspections
Scheduled with the local inspector; gas pressure tests before meter set.
Official page →Watch-outs
- LP-gas work runs under a separate Florida program - confirm the license path before bidding gas scope.
- Certified vs registered matters at bid time: registered contractors cannot follow work into a new jurisdiction.
Official page →On every job, regardless of state:
✓ License / certificate number on the permit application
✓ Permit posted before work starts
✓ Rough-in inspection passed before cover-up
✓ Pressure test on gas lines documented before meter set
✓ Final inspection + approval
✓ Backflow prevention test reports where required
✓ Fixture cut sheets and as-builts for closeout
✓ Utility coordination for water/sewer taps and gas meter sets
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