What Are Louisiana's Contractor Licensing Rules?

Is a contractor license required in Louisiana?

Yes, once a project crosses a dollar threshold that depends on the trade. Residential construction, including home improvement work, requires a license once a project exceeds $50,000. Several major commercial classifications — building construction, electrical, and mechanical work including HVAC — require a license at a much lower $10,000. Plumbing work above $10,000 specifically requires a Master Plumber license through a separate agency, not the general contractor board. Below these thresholds, smaller jobs generally fall outside state licensing, though a separate home improvement registration tier covers some residential repair and remodeling work below the full license threshold.

Which agency regulates it?

The Louisiana State Licensing Board for Contractors (LSLBC) regulates commercial and residential general contracting, and licenses electrical and mechanical (HVAC) contractors directly as classifications within that same system — not through separate boards. Plumbing is the exception: the separate Louisiana State Plumbing Board licenses master plumbers and plumbing firms, and a mechanical contractor doing plumbing work above $10,000 needs that board's license, not LSLBC's.

Where can you find the actual laws?

Contractor licensing is Louisiana Revised Statutes Title 37, beginning at § 37:2150. Grounds for discipline, including bidding or performing work without the required license, are listed in § 37:2158. The Board's own civil fine authority — up to 10% of the contract value or the value of the work performed, plus costs and attorney's fees — is § 37:2164. The criminal penalty for unlicensed contracting is § 37:2163. Plumbing is regulated separately under § 37:1361 and following. The Louisiana State Licensing Board for Contractors publishes its current classifications, application forms, and rules directly.

What does it take to get licensed?

A business needs a qualifying party — a sole proprietor or a full-time employee who represents the business for licensing purposes and sits for the required exam. Applicants generally complete a Business & Law course and pass a classification-specific trade exam, and can't retake a failed exam for 30 days. The qualifying party's credential has to stay current with any outside licensing body while they're representing that classification, and they have to notify the Board in writing within 30 days if they leave the company or stop being affiliated with it. A few classifications have their own specific extra requirements — mold remediation, for example, requires 24 hours of mold remediation training plus 4 hours of unfair-trade-practices and consumer-protection training on top of the usual exam process.

What are the penalties for operating without a license?

Real, and layered across criminal, civil, and contract law. Unlicensed contracting is a misdemeanor carrying a fine of up to $500 per day of violation, up to three months in prison, or both — and if the unlicensed work causes more than $300 in harm, that rises to a fine of $500 to $5,000 and six months to five years imprisonment. Separately, the Board can impose its own civil fine of up to 10% of the contract value or the value of the work performed, plus administrative costs and attorney's fees. And because Louisiana is a civil-law state, a construction contract performed by an unlicensed contractor is treated as an absolute nullity — legally as if it never existed in the first place. The unlicensed contractor can't enforce the contract's payment terms and loses lien rights entirely, though Louisiana courts still allow a narrower claim for the actual cost of materials, services, and labor already provided, separate from the contract itself.

Does Louisiana have reciprocity with other states?

Yes, and more openly than most states. As of October 2024, Louisiana abolished its old system of named state-by-state reciprocity agreements entirely. Under the current rule, any applicant from any state who passed a genuinely equivalent exam — with no waivers, exemptions, or grandfathering involved — gets that exam accepted toward the matching Louisiana classification, regardless of which state administered it. There's no fixed list of partner states anymore; every application is evaluated on its own based on what was actually tested and passed. Every other requirement — financial standing, insurance, and a review of any violations or pending violations — still has to be met independently.

Is it legal to rent or lease a license in Louisiana?

No. "Qualifying party" is Louisiana's actual term — a natural person a contractor designates to represent it for licensing purposes — and the role carries real formal obligations: staying current on any required outside credential, notifying the Board within 30 days of leaving the business, and certifying full-time employment status when the qualifying party isn't the owner. The Board has direct authority to fine, suspend, or revoke a qualifying party's status for violating licensing rules, separate from whatever happens to the business itself. A qualifying party who's listed on a license without genuinely working for and representing that business isn't satisfying the role the law actually describes — the designation exists specifically so someone real stands behind the license, not so a credential can be attached to an unrelated company for a fee.

How do you find a qualifier or a business in Louisiana?

findQualifier.com is a public, searchable board of licensed professionals advertising their availability to work as a qualifier, by state and trade. Browse available qualifiers in Louisiana, browse Louisiana businesses looking to hire, or post a listing.