According to recent case law of the Federal Supreme Court, the assignment of defect rights to common components to the floor owner is indispensable, but this does not make the matter any less complex (pro memoria: BGE 145 III 8). The latter also applies to condominium ownership built under building law; thanks to Prof. Dr. iur. Amédéo Wermelinger, conference director and University of Lucerne for the exciting conference at the Swiss Museum of Transport, Domino Hofstetter #Floor ownership #Building law #Building lease interest #Defect rights #Assignment #Used rights #Additional servitudes #Additional hall #Overall building