Born in
Hanover in the
Kingdom of Hanover, His architectural career began at the age of 16 when he worked for early Milwaukee architect, G. W. Mygatt. He enlisted in the
Civil War with the
24th Wisconsin Infantry as a private, After the war Koch returned to Milwaukee, where he formed a partnership with Mygatt until 1870, when he started his own firm. He married and had six children, including Harry and
Armand D. Koch. The latter also became an architect, joining his father's firm in the 1890s and helping with the design of the Milwaukee City Hall. Henry C. Koch died at his home in Milwaukee on May 19, 1910. ==Style==