McMahon Law Firm
Trusted. Experienced. Client-Focused.
At the McMahon Law Firm, we provide experienced and results-driven legal counsel across a wide range of matters. Based in Metairie, Louisiana, our firm represents individuals, families, and businesses throughout the state. With more than three decades of legal experience and hundreds of cases tried in parishes across Louisiana—including Jefferson, Orleans, St. Tammany, Ascension, Tangipahoa, Terrebonne, and Lafourche—we are committed to resolving complex legal issues with clarity, diligence, and a deep understanding of the law.
We pride ourselves on being more than just legal representatives—we’re partners in navigating the legal system. Whether guiding a family through a succession, representing a client in civil litigation, or advising a business on contractual issues, we treat every case with personal attention and professional care.
Areas of Practice Include:
Civil Litigation
Representing plaintiffs and defendants in a wide range of disputes, including breach of contract, negligence, property matters, and general liability.
Insurance Defense & Claims
Decades of experience representing both insurance companies and insured individuals. We understand both sides of the table and use that knowledge to secure fair and just outcomes.
Successions & Estate Matters
Assisting families with the legal steps required to transfer property and settle estates with compassion and efficiency.
Domestic & Family Law
Helping clients through matters such as divorce, custody, and support with thoughtful guidance and strong legal advocacy.
Class Action Litigation
Led significant class actions, including a high-profile lawsuits that resulted in the refund of millions of dollars to Louisiana drivers affected by unconstitutional red light traffic camera enforcement in Jefferson, Orleans and East Baton Rouge parishes.
Business & Contract Law
Advising small businesses and entrepreneurs on compliance, contracts, and disputes.

Court Room Experience
At the McMahon Law Firm, we are proud of our courtroom experience—but we’re equally proud of our ability to resolve matters outside of court when appropriate. We believe that great lawyering is about solving problems, not creating more of them.
If you’re looking for an attorney who listens, explains your options clearly, and fights to protect your interests, we invite you to contact our office to schedule a consultation.
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