Roche was a fine designer with an eye for Gothic architecture. He designed the world's first Gothic-style skyscraper for the University Club of Chicago, which opened in 1908. Later, the firm designed the neoclassical Soldier Field (1924).
William Holabird died in 1923 and Martin Roche followed four years later. Holabird's son John took over the firm with John Root, Jr., and it was renamed Holabird & Root.