The "Redoutenhaus" (Exchange House) is found after the Historischen Kaufhaus. It was already used in the Middle Ages as the city salt house and took over this function again in 1753.

Then in 1776, a large stairway was built to connect the house to the Kaiser's Room in the Kaufhaus and was used as for balls.

A "Stube" (parlor) was added for the Breisgau-Geschichtsverein Shau-ins-Land (Breisgau History Club) in 1878. The addition was built in the upper story and based on a sketch from F. Geiges.