The Most Exclusive Properties of South Palm Beach County With Mark... Mark L. Nestler and John R. Poletto showcase the most opulent homes in larger Boca Ra[...] April 24, 2018 / Dima Vitanova / Tags: Boca Raton, Florida, John R. Poletto, Mark L. Nestler, Nestler Poletto Sotheby’s International Realty, Palm Beach, South Florida real estate