In addition to the Pritzker Prize, Roche has been the recipiant of many other awards and honours. One of his early honours was the California Governor's Award for Excellence in Design; a similar award came from New York State.

There have been honorary degrees — one in 1977 from the National University of Ireland where he had completed his Bachelor of Architecture in 1945 at UCD, and another from Wesleyan University in 1981. The American Institute of Architects bestowed their Architectural Firm Award in 1974. Earlier, the New York Chapter gave him the 1968 Medal of Honor. In 1976, the American Society of Designers presented him with their Total Design Award. The French Academie d'Architecture presented him with their Grand Gold Medal in 1977, and elected him a member in 1979. He was the subject of an Architectural Association of Ireland exhibition in 1983. In the 1990's Roche has been awarded Gold Medals for architecture by the American Academy of Arts and Letters (1990), and the American Institute of Architects (1993).