In this role he was responsible for implementing a Distinguished Properties Learning platform for high net worth Sotheby's International Realty clients worldwide.
He joined the Sotheby's International Realty brand in 1978 as senior vice president to establish an affiliate network in the Mid-Atlantic and Tri-state regions, New England, the Midwest and Eastern Canada. In this role, he participated in the first on-premises sale of contents by Sotheby's Fine Arts and real estate by the Sotheby's International Realty brand.
Between 1978 and 2004, he participated in the listing and negotiation of more than 2,000 luxury residential properties.
His notable sales include: The “Anchorage” in Seal Harbor, Maine, property of former Governor Rockefeller; “Skylands” in Seal Harbor, Maine, purchased by Martha Stewart; “The Olson House” in Cushing, Maine, made famous by Andrew Wyeth in “Christina’s World”; the Berkshire Property of Nat King Cole; the Litchfield County residence of Erich Segal, author of “Love Story”; and the Edgartown property of Peter Sharp, former owner of the Carlyle Hotel in New York.
From 1975 to 1978, he worked for Citibank’s Financial Management division in New York, responsible for serving high net worth clients’ banking needs. During his tenure there, he introduced a concept of fine arts as collateral for demand loans. This concept became the foundation of Sotheby's Financial Services. Ballantyne began his career in 1971 with working with the director of the Detroit Institute of Arts, responsible for cataloguing the Tannehill Collection of French impressionist paintings and drawings.
He earned his bachelor’s degree from The College Wooster, Ohio, and his master's degree in architectural history from Columbia University, N.Y. Ballantyne also earned a master’s in business administration from Boston University, Mass.
Licensed in six states [Massachusetts, Maine, Vermont, New Hampshire, Rhode Island and Connecticut]. Ballantyne’s focus is on delivering top-tier expertise and professionalism to luxury residential buyers and sellers.