Over the course of his career, Hardy founded three firms: Hugh Hardy & Associates in 1962, Hardy Holzman Pfeiffer in 1967, and H3 Hardy Collaboration Architecture in 2004. Hardy Holzman Pfeiffer received the Architecture Firm Award in 1981, the highest honor bestowed on a firm by American Institute of Architects for distinguished work. Hardy was also a Fellow of the American Institute of Architects. Hardy was named a member of the American Academy of Arts and Letters in 1993.