James J. MacMillan – Trusted Local Expertise, Proven Real Estate Results
A lifelong Long Island native, James MacMillan brings deep roots and unmatched local knowledge to every real estate transaction. After earning his degree in computer programming from NYU, Jims career took a turn toward healthcare administration—an industry where he honed his skills in negotiation, communication, and problem-solving while working at top institutions like Memorial Sloan Kettering and Manhattan Eye, Ear & Throat Hospital.
These skills now serve his real estate clients well. Whether navigating complex deals, advocating fiercely for buyers and sellers, or analyzing market trends, Jim is known for his strategic thinking and attention to detail. His ability to identify goals and create clear action plans makes him a trusted advisor throughout the buying or selling process.
Drawn to the natural beauty and lifestyle of the East End, Jim made Amagansett his full-time home forty years ago and quickly immersed himself in the local community. As an active member of the Citizens’ Advisory Committee, he stays informed on zoning, planning, and development—knowledge that directly benefits his clients.
Jims clients often remark on his encyclopedic knowledge of Hamptons real estate—he can drive down nearly any street and recall past sales and neighborhood history. This, combined with his integrity, responsiveness, and proven track record of successful transactions, has earned him a loyal base of repeat clients and referrals.
Whether youre buying, selling, or investing, Jim MacMillan delivers personalized service backed by experience, insight, and results.