The building covers the whole southern part of the square (Quadrat) A2. The large frontside opposing the Mannheim Palace has 21 windows and three floors. The three middle arbors are bulged and incorporate a continuous balcony. The center window carries the official seal of the Family Heydeck-Bretzenheim.
Rooms
The Palais has about 60 rooms and was structured in 1970:
The ground floor of the right wing hosted the Bretzenheim administration and offered living and working rooms for the chancellor's director and several rooms for assistants and other administrative staff.