Sergio Anthony Castaneda

An accomplished trial attorney, Sergio A. Castaneda received his law degree from UCLA School of Law and is licensed in California, the Central District of California’s U.S. District Court, and the Ninth Circuit Court of Appeals. Over a 25-year career, he has focused on clients who might otherwise be overlooked. His very first case after founding his own firm involved a single mother who’d been sued by her prior attorney and hit with a $50,000 arbitration award. Sergio challenged that award with a trial de novo, won at trial, and secured her attorney fees—proving that thorough preparation yields success. Since then, he has represented both juveniles and adults in criminal matters, from minor charges to life-threatening risks. Rather than rely on one-size-fits-all defenses, Sergio and his team develop bespoke strategies that center each client’s background. Coupled with transparent, ongoing communication, this approach has become the hallmark of Castaneda Law’s commitment to winning results.