A contractor who performs work in Louisiana without the required state license faces criminal prosecution, administrative action from the Louisiana State Licensing Board for Contractors (LSLBC), and the loss of nearly every tool normally used to get paid. Fines run up to $500 for each day of violation at the basic level, rising to as much as $5,000 and five years in prison when the work causes real harm. On top of that, the contract itself is treated as an absolute nullity, which means the contractor usually cannot sue to collect, cannot file a valid lien, and may find their insurer refusing to cover any resulting claim.
Criminal Penalties Under RS 37:2163
Louisiana treats unlicensed contracting as a crime, and the penalties were restructured when a 2025 reorganization moved the enforcement provisions into RS 37:2163.
Any person who performs licensable work without an active LSLBC license is guilty of a misdemeanor. On conviction, the penalty is a fine of up to $500 for each day of violation, up to three months in prison, or both.1Louisiana State Licensing Board for Contractors. Louisiana Contractors Licensing Law and Rules and Regulations – RS 37:2163 The per-day structure matters. A contractor who stays on a jobsite for several weeks while unlicensed can accumulate five-figure fines before the project ends.
The penalties escalate sharply when the unlicensed work causes harm or damage to another person in excess of $300. In that situation, the fine ranges from $500 to $5,000, and imprisonment can run from six months to five years, with or without hard labor. This aggravated tier applies regardless of any separate action the LSLBC takes administratively.1Louisiana State Licensing Board for Contractors. Louisiana Contractors Licensing Law and Rules and Regulations – RS 37:2163
Administrative Action by the LSLBC
The criminal case is only one track. The LSLBC can issue cease-and-desist orders that halt work immediately, impose its own fines, and debar a person from obtaining a license in the future. Local building departments are also prohibited from issuing permits to anyone who lacks the appropriate active license for the scope of work.2Louisiana State Legislature. Louisiana Revised Statutes RS 37:2158
The board does not wait for complaints. LSLBC staff may inspect local permit records across the state each month to identify unlicensed operators, and the board also investigates complaints filed by consumers or competing contractors.
The Contract Becomes Unenforceable
This is where the financial damage usually dwarfs the fines. Louisiana Civil Code Article 1966 provides that an obligation cannot exist without a lawful cause.3Louisiana State Legislature. Louisiana Civil Code CC 1966 – No Obligation Without Cause A contract to perform licensable work entered into by someone without a license violates public policy. Under Article 2030, a contract that violates a rule of public order is absolutely null and cannot be confirmed or ratified later.4Louisiana State Legislature. Louisiana Civil Code CC 2030 – Absolute Nullity of Contracts
The practical effect is simple and brutal. An unlicensed contractor who finishes a project and does not get paid typically cannot sue to collect. Louisiana appellate courts have consistently held that because the underlying contract is an absolute nullity, there is no enforceable agreement to rely on. A Louisiana First Circuit decision in 2020 went further, ruling that an unlicensed contractor could not recover even under an unjust enrichment theory when the completed work was substandard.
No Valid Mechanics Lien
Louisiana’s Private Works Act normally lets a contractor file a privilege (the state’s term for a mechanics lien) against the property when payment doesn’t come through. Courts have confirmed that this protection is available only to properly licensed contractors. Because the agreement is an absolute nullity, there is no valid debt to secure, and any lien filed by an unlicensed contractor is itself invalid. That removes the single most powerful collection tool a contractor has.
Insurance May Not Respond
Construction insurance policies often condition coverage on the contractor holding the licenses required for the work. When a claim arises from unlicensed work, the insurer may deny coverage altogether. Both the contractor and the property owner are then exposed personally for whatever the loss turns out to be.
Was a License Actually Required?
Before any of these consequences apply, the work has to have required a license in the first place. The trigger depends on the type of property and the total project cost:
- Commercial projects of $50,000 or more.
- New residential construction of $75,000 or more.
- Residential improvements and repairs on an existing home costing more than $7,500.
- Any work involving hazardous materials, at any dollar amount of $1 or more.
The thresholds apply to the full scope of work, not to individual invoices. Louisiana law specifically prohibits splitting a project into smaller contracts to stay under the threshold, and the LSLBC treats divided contracts as a single scope when deciding whether a license was required.2Louisiana State Legislature. Louisiana Revised Statutes RS 37:2158
A handful of narrow exemptions exist under RS 37:2157: a property owner who supervises their own work on a building that won’t be sold or rented, regulated public utilities performing work tied to their authorized service, and volunteers donating labor to a church building. A 2023 change also exempts subcontractors working under a licensed residential contractor, provided the work doesn’t involve electrical, mechanical, plumbing, mold, asbestos, or hazardous materials.5Louisiana Legislature. HB 199 Engrossed 2023 Regular Session Digest There is no general “small jobs” exemption; work below the thresholds simply doesn’t trigger licensing in the first place.
Defenses That Can Be Raised
A contractor facing an unlicensed-work charge or a payment dispute has a few arguments available, though Louisiana courts apply them cautiously.
The cleanest defense is that the project’s true cost fell below the licensing trigger. The contractor carries the burden of proving the total scope, and the LSLBC looks past invoice structure to the actual work performed.6Louisiana State Licensing Board for Contractors. Louisiana Contractors Licensing Law and Rules and Regulations – RS 37:2150.1 Definitions
A contractor may also argue that the work falls within one of the statutory exemptions in RS 37:2157. Every element of the claimed exemption has to be met. A homeowner who builds a house on their own land under the owner exemption and then rents it out, for instance, loses the exemption.7Justia. Louisiana Revised Statutes Title 37 RS 37:2157 – Exemptions
Some contractors raise a “substantial compliance” argument, claiming a good-faith effort to get licensed that was derailed by circumstances outside their control. This doctrine is recognized elsewhere, notably in California, but Louisiana courts have not clearly embraced it. Article 2030’s absolute nullity rule leaves little room for equitable workarounds, so a contractor relying on this argument in Louisiana is fighting uphill.
Checking a License or Reporting Unlicensed Work
Property owners can verify any contractor’s license through the LSLBC’s online database by searching company name, license number, or qualifying party name. The board also publishes a mobile app called “La. Contractor” that pulls the same real-time data.8Louisiana State Licensing Board for Contractors. Verify Licensure A verification takes less than a minute and prevents most of the problems described above.
Consumers and other contractors can file complaints through the LSLBC’s online complaint portal, which asks for identification of the complainant and the contractor, a description of the problem, and optional supporting documents.9Louisiana State Licensing Board for Contractors. File A Complaint The board does not publish a filing deadline, but a stale complaint is harder to investigate.