As was typical for men of his stature of the era, Kahn maintained both a New York City residence and a home in the country. Kahn's original country home, a gift from his father-in-law, was in Morristown, New Jersey. Although a resident there for a number of years and a business associate of many of his neighbors, antisemitism was still prevalent and Kahn was never accepted by Morristown society. Social rejection led him to move to Long Island and his New Jersey estate ultimately became home to Honeywell.