Dolgin was born in Great Neck, New York.[3] His parents were Israel and Diana Dolgin, and he had three siblings: Neil Dolgin (born 1953); Dr. Stuart Dolgin (deceased 2001);[5] and filmmaker Gail Dolgin (1945-2010).[6][7][8] Dolgin's grandfather, also named Kalmon Dolgin, immigrated from Russia and initially operated a grocery store. In 1904, he founded a real estate brokerage business in Brooklyn called Kalmon Dolgin Affiliates, Inc.
In 1943, Dolgin's father and uncle, Morris Dolgin, expanded the business into property ownership by purchasing a building in Williamsburg, Brooklyn. They eventually built a portfolio consisting mainly of industrial buildings in Brooklyn and Queens.[1][3]
In the 1960s, Dolgin joined the family business, and in the 1970s, his brother Neil followed suit.[1] The Dolgin brothers expanded the company's operations beyond Brooklyn and Queens, extending their reach to the Bronx, Staten Island, Long Island, Manhattan, New Jersey, Connecticut, and Westchester County, New York.[3]
They acquired several properties, including a $127 million portfolio of seventeen medical office buildings on the East Coast in 2004, a 50% interest in the Falchi Building in Long Island City, Queens for $61 million in 2005, and properties in Philadelphia and its suburbs between 2006 and 2007.[9] Dolgin currently holds the position of president at both Kalmon Dolgin Affiliates, Inc. and KND Management Co., Inc., and serves as Of Counsel at the law firm of Agins, Siegel & Reiner.[3]
As of 2013, the company has three divisions: management, brokerage, and development, and is recognized for converting industrial buildings into commercial and residential spaces.[10]