The Kalman Co.

About Us

The Kalman Co. is a luxury real estate firm on Nantucket, brokered by eXp Realty. Founded by Sean Kalman, the company pairs deep island knowledge with concierge-level service, guiding buyers, sellers, and homeowners through every stage of Nantucket real estate. With a background in hospitality, design, and marketing, Sean brings a lifestyle-driven, detail-focused approach to every transaction: thoughtful presentation, modern marketing, and smart use of technology, delivered with the warmth and discretion clients expect on-island.