Following the 1798 French invasion and the creation of the Helvetic Republic Pfäffikon Castle was heavily damaged and declared the property of the Canton of Linth. Following the collapse of the Republic and the 1803 Act of Mediation the castle was returned to the Abbey and once again became religious property. In 1820 the remainder of the curtain wall was demolished while the tower, chapel and residential wings were rebuilt. In 1839 the rotten tower roof and overhand were replaced with the current roof. In 1928 the chapel was renovated and in 1986-88 the chapel, tower and moat were repaired and renovated. Today the castle and its restaurant are available for conferences, piano concerts, meetings and events, while the residential wings are used for municipal administration.