The Julius W. Hegeler I House is a historic building in LaSalle, Illinois, United States.

Born in 1867, Julius Hegeler studied mining engineering and joined the family business in his adulthood.

In late 1905, they moved to Danville so that Hegeler could establish his own zinc smelting company with his brother Herman.

At times, the LaSalle County Youth Bureau and a local YMCA chapter also used the building.

[2] The Hegeler Carus Foundation, a non-profit organization that oversees the mansion across the street, purchased the house and restored its roof.