Last verified: Next check due: 4 official sources How we verify

Louisiana plumbing license

Louisiana plumbing projects over $10,000 need an LSLBC license. (source: LSLBC: Types of Licenses (opens in a new tab))

Check a license on the LSLBC website (official site, opens in a new tab)

How: Search the LSLBC contractor database by name, license number, city, parish or qualifying party. (source: LSLBC: Types of Licenses (opens in a new tab))

Checked against official Louisiana State Licensing Board for Contractors sources. See sources.

1. Who needs a license

Commercial projects of $50,000 or more need a commercial license; electrical, mechanical and plumbing projects over $10,000 do too. Residential and home improvement work also needs LSLBC credentials. (source: LSLBC: Types of Licenses (opens in a new tab), source: LSLBC: Licensing Requirements (PDF) (opens in a new tab))

Penalties

2. Plumbing license classes

ClassNameCovers
CommercialCommercial licenseCommercial projects, by classification (source: LSLBC: Types of Licenses (opens in a new tab))

3. Fees, exam, bond and insurance

Fees

We're still verifying this, check the official board: LSLBC website (opens in a new tab).

Experience and steps

  1. Show net worth Commercial and residential applicants submit a financial statement showing at least $50,000 net worth, current within 12 months. (source: LSLBC: Licensing Requirements (PDF) (opens in a new tab))
  2. Pass the exams Complete the Business and Law requirement and any trade exam. (source: LSLBC: Licensing Requirements (PDF) (opens in a new tab))
  3. Insurance Residential and home improvement applicants show general liability of at least $100,000 and workers' comp. (source: LSLBC: Licensing Requirements (PDF) (opens in a new tab))

Exam

We're still verifying this, check the official board: LSLBC website (opens in a new tab).

Bond

We're still verifying this, check the official board: LSLBC website (opens in a new tab).

Insurance

Renewal

Licenses expire on the anniversary of issue, with 1, 2 or 3 year terms in many cases, and 15 days after expiry to renew without penalty. (source: LSLBC: Contractor law (blue book PDF) (opens in a new tab))

4. How to look up a contractor

Check a license on the LSLBC website (official site, opens in a new tab)

How: Search the LSLBC contractor database by name, license number, city, parish or qualifying party. (source: LSLBC: Types of Licenses (opens in a new tab))

You can search by: Contractor name, License number, City/town, Parish, Qualifying party. (source: LSLBC: Types of Licenses (opens in a new tab))

Full checklist: how to check a contractor

5. Reciprocity (license transfer)

We're still verifying this, check the official board: LSLBC website (opens in a new tab).

Use the reciprocity checker

6. Red flags when hiring

7. How to complain

We're still verifying this, check the official board: LSLBC website (opens in a new tab).

8. Sources and last verified

Last verified: . Next check due: . Every fact on this page links to one of these official pages. How we verify.

  1. LSLBC: Types of Licenses (opens in a new tab) (checked Oct 24, 2026)
  2. LSLBC: Licensing Requirements (PDF) (opens in a new tab) (checked Oct 24, 2026)
  3. LSLBC: Contractor law (blue book PDF) (opens in a new tab) (checked Oct 24, 2026)
  4. LSLBC contractor search (opens in a new tab) (checked Oct 24, 2026)

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