When opened the building featured marble baseboards and marble floors in the lobby area. The building served as the city’s post office until 1964, when a new, larger post office was constructed. At that time, the City of La Porte purchased the building from the Federal Government for $31, 500, and renovated the structure to serve as its city hall, moving its offices from the Masonic building one block to the West.
Significant interior renovations occurred in 1965, 1969 and in 2014, when extensive restoration was done to the outside of the building as well. The building became a designated historic site for La Porte on May 17, 2016.