Financier Mark Marcello purchased a Palm Beach estate in the Mar-a-Lago Security Zone for $36 million, according to records dated March 11. The property, located at 160 Clarendon Avenue, was acquired through Marcello’s Florida-based entity, 150 Clarendon Avenue LLC, from sellers John and Marilyn Breyo. Lawrence Moens of Lawrence A. Moens Associates represented both parties in the transaction.
The sale is notable as it continues a trend of high-value real estate deals within the Mar-a-Lago Security Zone. This area is secured by the Secret Service during visits by President Donald Trump to his private club and residence on the island. Since the 2024 election, agents have pointed to increased security and proximity to political power as attractive features for buyers in this neighborhood.
Marcello is known as a longtime resident of West Palm Beach and serves as a partner at Windsor Capital Partners, an investment firm founded by his father. Property records indicate that he previously bought a waterfront home at 5009 South Flagler Drive for $1.8 million in 2007.
The sellers, John and Marilyn Breyo, purchased the Clarendon Avenue estate for $2.3 million in 2000. The mansion was built on a 1.5-acre lot in 1999 and features approximately 8,900 square feet with five bedrooms, six bathrooms, two half-bathrooms, a gym, and a pool. John Breyo was formerly an executive at Ayco Corporation—a personal financial counseling firm acquired by American Express in 1983 and later by Goldman Sachs in 2003—where Ayco remains part of Goldman’s wealth management division.
The Breyos initially listed the property for $55 million during Palm Beach’s pandemic-driven market surge in 2022 but reduced the price significantly over time before completing this sale. Last month saw another significant transaction nearby when real estate investor Robert Miller and his wife Linnette Miller bought a home on Clarendon Avenue for $25 million.
Recent price reductions have contributed to increased sales activity this season; earlier this month an oceanfront historic home designed by architect Marion Sims Wyeth sold for $28 million after being discounted by $10.7 million from its previous listing price.
