Constant G. Marquer III
Heller, Draper, Hayden, Patrick & Horn, LLC | Law Offices of Constant G. Marquer III • New Orleans, LA
BusinessPersonal Injury
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Contact
Email
Phone
Address
650 Poydras St Ste 2500, New Orleans, LA, 70130, US
Professional
About
Constant G. Marquer III is a seasoned attorney with the firm Heller, Draper, Hayden, Patrick & Horn, LLC | Law Offices of Constant G. Marquer III in New Orleans, Louisiana. Based at 650 Poydras St Ste 2500, he focuses his practice on commercial law, construction and development matters, debt and lending agreements, and business-related legal issues. With deep experience in these complex and high-stakes areas, Mr. Marquer provides strategic legal guidance to businesses, developers, lenders, and other clients navigating transactional and dispute-related matters. Mr. Marquer approaches each matter with a practical, detail-oriented mindset, working to identify legal risks early and deliver solutions tailored to the client’s goals. His work in commercial and business law requires both a thorough understanding of the law and the ability to anticipate challenges that may affect operations, financing, or development projects. Whether advising on contractual arrangements, lending documents, or construction-related issues, he is committed to helping clients move forward with confidence and clarity. Clients value Mr. Marquer’s professionalism, responsiveness, and commitment to protecting their interests in matters that can have significant financial and operational consequences. His practice is grounded in a strong dedication to client service and a focused understanding of the legal and business considerations that shape commercial success in Louisiana.
About Business Law
Business law attorneys advise companies on legal matters including formation, contracts, compliance, and transactions. They help businesses navigate regulatory requirements and protect their interests. Common matters include business formation, contract drafting, mergers and acquisitions, commercial disputes.
Credentials
Education
1980 Louisiana State University, Paul M. Hebert Law Center JD - Juris Doctor 1977 University of New Orleans BA - Bachelor of Arts
Recognition & Involvement
Publications
1997 Louisiana Bar Journal Telecommuting in the 21st Century
Associations
Order of the Coif Member Louisiana State Bar Association Member Colorado Bar Association Member Wyoming State Bar Association Member
Other Business Attorneys in New Orleans, LA
Updated: Jul 13, 2026