We visited other clients yesterday who are also building with our general contractor. I especially wanted to check out the plaster Q2. It was as smooth as a baby's bottom. So more like Q3. I was quite impressed by the young couple (mid-20s) as well. They hardly bother about things like we do, they just build or have it built. House 188 sqm (there are two of them) without [Kontrollierte-Wohnraumlüftung], fireplace, and frills. But with a garage. Everything is running smoothly for them. According to them, a big advantage with this general contractor is that everything except load-bearing walls can be changed during construction.
So we remain very reassured about the decision for the general contractor and (im)patiently await the building permit.