Thank you for your helpful opinions on my considerations regarding house construction. Whether we stay in the current apartment depends on whether we find a suitable rental apartment for us. If that is the case, then we will move out.
The search for a plot of land is very time-consuming. The supply of plots in our area is very scarce. As long as we do not find a suitable plot, we will save about €1,000 every month and also put aside half (2*2600/2=2600) of the holiday and Christmas bonuses each. Here in Austria, we have 14 monthly salaries. In this way, we would save about €14,600 annually for the plot.
I am a very precise person but I find it hard to make decisions. Finding a floor plan will certainly take a while. I have also already researched a lot about the type of construction. There are so many options: solid brick, timber frame with straw and clay, timber frame with cellulose, hemp concrete, hemp bricks, CLT, etc. I believe I will certainly not be bored in the next 3 to 5 years.
Can anyone recommend a program for drawing a floor plan?