Under the Three Leagues the castle became the home of the landvogt appointed by the Leagues over Maienfeld. In 1622 a fire devastated much of Maienfeld but left Brandis unharmed. However, two years later it was burned by Austrian troops. It was repaired and continued to house the landvogt until about 1700. In 1799 it was occupied by French troops following their invasion of Switzerland. During their occupation, they stripped and burned most of the wood in the castle and left it as a ruin. In 1807 the municipality of Maienfeld acquired the rights to the ruined castle and sold it to a private owner in 1837. Around 1860 the so-called "Frauenturm", a late-medieval round bastion in the south corner of the castle, was demolished. The main tower was repaired and expanded in 1868. A new roof was added the castle in 1906. It was purchased in 1969 by the Zindel family and renovated. In 1972/73 the history of the castle was explored through an archeological exploration.