In 1797 Johann Jakob Köhl bought an apartment in the house at Casinoplatz 1 from the Stadtholder Johannes Wassali. In the following years he systematically bought up other parts of the house. On the facade of the house he also placed the coat of arms of the von Köhl family, which is clearly visible. This is still displayed there today.
The property was inhabited by various members of the family over the coming centuries:
34: Chur 1893, Ulf Wendler, 2010, Stadtarchiv Chur