We answer the most important questions about architecture. "Trends and the future" is our first keyword: When do we talk about BIM planning and why isn't it already standard? Planners draw plans. Previously by hand, for over 20 years computer-aided. Everyone had an idea of what this centuries-old technique meant. Drawing begins in childhood, but for most people it ends there. Computer-aided design is where most people's imagination ends. BIM is something that only the real industry experts get to grips with, even though it has been in use for many years. In short - with BIM (Building Information Modelling), each element in a digital building model is stored with extensive information that can be read out and summarised (area, material, weight, etc.). All project participants enter their relevant data into this virtual building model. The plan also becomes a database and the BIM manager ensures that the standardised rules are adhered to and highlights any collisions between the different planners. Actually a sensible thing. In practice, however, things look different. Extensive preparations and approx. 15% higher planning costs, especially in the initial phase, reduce the willingness to use such systems. It is the small to medium-sized construction projects where the benefits of life cycle cost management and savings in the tendering process only become apparent at a later stage. Added to this is the interface problem of the software companies, who do not want to show their cards. There are major hurdles and technical difficulties when it comes to interaction and interfaces if different CAD programmes are to work together. Another challenge is the fact that everyone involved always has to purchase the latest software. One ray of hope is the desire of the building authorities to one day handle the approval process using BIM models, for which preparations are already underway.