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John Duffy

John Duffy

Global Real Estate Advisor

John Duffy has dedicated his career to helping others achieve their most important life goals. His background in financial services and consulting clients on market trends transfers seamlessly into his real estate career, allowing him to competently and compassionately guide buyers, sellers, tenants and landlords through any transaction. As an associate with Gibson Sotheby’s International Realty, John is equipped to pair his sound financial expertise with the industry’s most impactful [...]

John Duffy has dedicated his career to helping others achieve their most important life goals. His background in financial services and consulting clients on market trends transfers seamlessly into his real estate career, allowing him to competently and compassionately guide buyers, sellers, tenants and landlords through any transaction. As an associate with Gibson Sotheby’s International Realty, John is equipped to pair his sound financial expertise with the industry’s most impactful tools—both invaluable in advising clients on the pricing and marketing of their homes. Putting his clients’ satisfaction above all else, John’s philosophy has always been to stay personally engaged, involved, and available to his clients every step of the way. A resident of his hometown of Charlestown, Massachusetts, John has witnessed the neighborhood transform into the dynamic and sought-after community it is today. He is a licensed notary public and proud sponsor and former mentor with Boys to Men New England, a non-profit organization supporting teenage boys on their journey to adulthood. An avid autograph collector, John has met household names like Elton John, Stephen King and Wayne Gretzky over the past 25 years. He can often be found exploring Boston’s diverse restaurant scene or serving as head coach of the Mite Development League for Winthrop Youth Hockey.

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