About Stephanie Chantelle
Stephanie Chantelle Coste built a legal path that moves from international affairs to the courtroom and into immigration work. She began her higher education at Florida State University, where she earned a B.A. in International Affairs in 2004. She then attended Fordham University School of Law and received her J.D. in 2007. Later she returned to graduate study in education, completing an M.A. from Long Island University–Brooklyn Campus in 2013.
Fresh out of law school she joined Sedgwick Detert Moran & Arnold LLP as an associate in 2007. That early position placed her in a large firm environment where she handled matters typical for junior associates, gaining experience in litigation processes and client work. Years later she reemerged in an immigration practice, listed as an associate at Immigration Group, LLC in 2022. That role reflects a shift into practice areas tied to immigration law and client representation on matters involving immigration systems and administrative processes.
Coste maintains admission to practice in both Florida and New York. Practicing in two jurisdictions has meant dealing with differing state procedures and client needs. Her background in international affairs and her later graduate study in education have also informed how she approaches complex client situations that touch on cross-border or public policy concerns.
Her career includes experience in large firm settings and in smaller, specialized practices. Those environments require different skill sets: coordinating with large teams, managing procedural deadlines, and addressing individual client circumstances in more intimate practice settings. Colleagues describe her as steady under pressure and attentive to procedural detail. She has navigated administrative filings, courtroom appearances, and paperwork-intensive immigration processes throughout her career.
Coste is listed in connection with Montz & Coste PLLC, where she currently practices. The firm listing appears in public office records under the name Montz & Coste, PLLC as well. In her day-to-day work she handles the practical demands of client representation, from case preparation to hearings and filings. Her dual-state admissions and her blend of litigation and immigration experience shape how she approaches each matter.
She continues to work at Montz & Coste PLLC and represents clients in matters arising under the laws of New York and Florida. Her current practice focuses on immigration-related representation and related legal services.
