Hello Dirk, everything went well for us so far. I am a retired craftsman myself. Everything that wasn’t as I had imagined, I took care of myself. I did the interior finishing myself. I have time, after all. Only the electrical work was done by someone else. The foundation made of WU concrete was, of course, also done. It was perfectly straight and the measurements were precise to the centimeter. Our roof is watertight, the windows are straight. All the follow-up work has also been completed. Due to Corona, there were delays. Since we are already older, the house will probably outlive us. The work during the erection of the house was partly adventurous. But those were not my adventures. We are satisfied and only consume about 8000 kW of electricity per year. Regards