Neumann also worked for Damian Hugo Philipp von Schönborn (1676–1743) and Franz Georg von Schönborn (1682–1756). Neumann built the "Corps de Logis" of the Schloss Bruchsal (after 1731), with its notable stairway. In the same town, he also designed the church of St. Peter (1740–1746) which was to be the burial site for the Prince-Bishops of Speyer. Among his work for the Elector of Trier are the "Dikasterialgebäude" of Ehrenbreitstein Fortress (1739–1748) and the summer palace Schönbornslust (1748–1752, demolished 1806) at Kesselheim, also near Koblenz.