The Bundespräsidialamt (Office of the Federal President) is a federal agency ( oberste Bundesbehörde ) of the Government of Germany assisting the President of Germany .
The office building is situated beneath Bellevue Palace in Tiergarten in Berlin . The seat was formerly in Bonn in the Hammerschmidt Villa and switched to Berlin with the Berlin-Bonn Act . The agency moved into the actual building in 1998.
The current head of the Bundespräsidialamt is Stephan Steinlein .