Herman J. Jessor (June 15, 1894 – April 8, 1990) was an American architect who helped build more than 40,000 units of cooperative housing in New York City. He, along with Abraham Kazan, was a driving force of the cooperative housing movement in the United States.
Jessor was born in Imperial Russia. He arrived with his family in the United States at age 12, and graduated from Stuyvesant High School in Manhattan, and then the Cooper Union School of Engineering. During school, he worked as an engineer.
He was a young architect on the staff of architect George W. Springsteen, of Springsteen & Goldhammer, when that firm engineered the first limited-equity cooperative in New York City, the Amalgamated Housing Cooperative in The Bronx, in 1927. Jessor subsequently worked with Springsteen on the design on the Hillman Housing Corporation and was the architect for phase two of the United Workers Cooperative Colony;East River Housing Corporation [possibly with Springsteen again, depending on the source],Seward Park Housing Corporation; Rochdale Village in Queens and the Penn South complex in Chelsea, Manhattan. In one of his largest undertakings, Jessor was the major designer of Co-op City, the 15,500-unit cooperative development in The Bronx.