[2][3] Hammond received a Bachelor of Science of architecture from the Armour Institute of Technology in Chicago in 1904 and studied for three more years at the École des Beaux-Arts in Paris, France.
In 1929, Hammond was named State of Illinois Supervising Architect in the Department of Purchases and Construction, a role he held until 1940.
Burnham was on the board of the 1933 Century of Progress exposition, and Hammond was able to secure a commission to design the Illinois Host House.
In 1939, Hammond designed the Illinois Buildings at the Golden Gate International Exposition and the 1939 New York World's Fair.
[7] He was a member of Good Housekeeping Magazine's Studio of Architecture and Furnishings along with Helen Koues, Myron Hunt, Henry Ives Cobb, Jr., and Dwight James Baum.