Richardson died in 1886 at age 47 of Bright's disease, a historical term for the kidney disorder chronic nephritis. On his last day, he signed an informal will directing the three assistants still remaining to carry on the business, which was soon formalized as Shepley, Rutan and Coolidge. One example includes Richardson's design for the Greater Cincinnati Chamber of Commerce Building. Richardson had won the selection process in 1885 and nearly finalized the work, but after his death his successors completed the project.