The Administration Building II was built as an extension in the years 1890 to 1892 by Georg Daniel as a three-storey building with a central inner courtyard. The two buildings were connected by a three-part triumphal arch. The walk over the arches still leads administrative staff from one building to the other. Compared to the Administration Building I, the facade of the extension building appears reduced. Inside, in the foyer, there are stucco ceilings and wall surfaces articulated with pilasters. Richly designed door systems are also preserved.