Currently, Kollhoff is president of the society for the "Bauakademie", that has as its goal to reconstruct this building by the architect Karl Friedrich Schinkel, and to let it be reborn as the "Berlin International Academy of Architecture".
Seeling upon his apprenticeship received further academic training at the college for civil engineering in Holzminden in the Duchy of Brunswick and studied at the Prussian Bauakademie in Berlin, capital of the German Empire since 1871.