Is My Plumber Licensed and Insured in Louisiana?

Plumbing is the one trade on this site with a genuine two-agency structure, and most homeowners have never heard of the second one. The business needs an LSLBC Plumbing license once a job's labor and materials exceed roughly $10,000. But the individual person actually working on your pipes must separately hold a Master Plumber license from the State Plumbing Board of Louisiana — a completely different agency from LSLBC, with its own license and its own lookup site. A company can be a legitimately licensed LSLBC business while the technician they send isn't a licensed Master Plumber, so checking only one side tells you half the story.

The two licenses, explained

• LSLBC Plumbing classification — covers the business entity, required above roughly $10,000 in labor and materials. Plumbing is also a subclassification of Mechanical, which matters for companies that do combined plumbing/HVAC work.
• Master Plumber license, State Plumbing Board of Louisiana — covers the individual. This is the credential that actually matters for who's standing in your bathroom.
• Gas line work may additionally require a separately licensed gas fitter — worth asking about explicitly if your job involves gas piping.

Verify a plumber's license — two separate lookups

• LSLBC (the business): arlspublic.lslbc.louisiana.gov/Public/Search
• State Plumbing Board of Louisiana (the individual Master Plumber): public.spbla.com

Insurance: what to actually check

LSLBC's mandatory insurance minimums apply to Residential Construction, Home Improvement, and Mold Remediation classifications — not to a standard Plumbing license. So:

• Ask for a Certificate of Insurance (COI) before work starts.
• Confirm General Liability and, if they have employees, Workers' Compensation are listed — required in Louisiana starting at one employee, no small-business exemption.
• Call the insurer listed on the COI to confirm coverage is active.

What to ask before you hire

• "What's your LSLBC license number, and is the technician coming out a licensed Master Plumber?"
• "Can you send a COI before the job starts?"
• "Does this job involve gas line work, and is that separately licensed?"

Red flags

• The business has an LSLBC number but can't confirm the technician holds a Master Plumber license.
• No written estimate before a slab leak or sewer job — these run into thousands of dollars and estimates should be in writing.
• Gas line work quoted without mentioning a separately licensed gas fitter.
• A COI naming a different company than the one sending the crew.

New Orleans' mix of century-old cast-iron drain lines and modern PEX/PVC systems means the right plumber for one home may be the wrong one for another — licensing verification is the baseline, not the whole picture, but it's the part you can actually check in five minutes.

This is general information, not legal advice — confirm current requirements directly at lslbc.gov and spbla.com. Ready to compare vetted local plumbers? Browse plumbing repair pros near you on GulfServicePros.