Just wanted to check in again since we have now been living in the house for about 3 years. The floor plan of the house has still changed significantly (somewhat smaller, about 140sqm + basement). I bought a plot very early on. (July 15?) We ended up with construction costs including the plot at €440,000 including incidental costs and partial furnishings (kitchen, bedroom, and whatever else is new). Of that, €420,000 was financed. Later on, additional costs for outdoor facilities, carport, etc. were incurred.
The targeted repayment rate amounts to €1800 and is higher than initially planned because our income had improved very positively by the time the contract was signed. Completing the financing was not a problem since I was still a "regular employee" at that time, but the banker also advised me to get the financing secured before taking over the company. Currently, we are repaying significantly more; we also do not have children yet and want to enjoy life a bit more.
In retrospect, I am extremely glad that we took the step into homeownership. This freedom is simply a new quality of life. However, I can now also better understand the critical voices than I could in 2015.