Building Information Modeling (BIM) continues to transform construction in Germany by continuously capturing, linking, and representing all project-relevant data in a digital and three-dimensional format. The resulting new forms of collaboration, along with new responsibilities and obligations, directly impact the legal relationships of the parties involved. The authors outline the problem areas and present solutions. They have already gained international experience in the field of BIM projects, including contributing to the development of specific contractual conditions for BIM. New in the 2nd edition: - new technical standards for digital planning and construction - new service descriptions for essential planning disciplines - secured standards through templates for AIA, BAP, modeling guidelines - new construction contract law and BIM - experiences.