Adolph I. Namm was a Polish immigrant with an embroidery and upholstery business in Manhattan. In 1885, he moved his business in Brooklyn, and by 1891 he opened a new store at 452 Fulton. At the time, that stretch of Fulton Street was emerging as a popular commercial shopping destination. His son, Benjamin Harrison Namm, eventually took over the business. During its heyday, the store was enormously successful. It was also one of the largest cash-only enterprises in Brooklyn, competing with other large department stores like Abraham & Straus.

The A.I. Namm & Son flagship store was closed in 1957, and the business moved to the suburbs. The building has since been sold and purchased several times. The store once covered an entire city block, but the 450-458 is the last remaining portion today.