In multi-family house construction, it is probably mainly due to the numerous regulations regarding what an 11-unit building must have nowadays... parking spaces, bicycle spaces, preferably an elevator from the 2nd floor up, thermal insulation, heat pump, stair width, color of the janitor’s eyes, etc. Without an underground garage, a multi-family house can hardly be built nowadays...
And in single-family house construction, it is the massively increased demands that one could afford in times of low interest rates, but now cannot anymore. However, one does not want to do without these demands and is usually too proud or too refined to do it oneself if one cannot commission it or if part of it does not go fast enough, is not good enough, etc. Demands that I cannot explain, since none of those who cannot afford a move-in-ready home including garden come from a wealthy family and have been accustomed to luxury since childhood...
This will be my last post here, my place will probably go on the market during the year. In the end, the (not my own) demands regarding execution and duration of the project could no longer be reconciled with full-time work, entertaining the children, and the fact that one cannot work 7 days a week in the long term, working on the investment during the week, on the own outdoor facilities on the weekend...
I wish everyone here all the best and apologize for the occasional outburst that occurred. Cheers.