Interest rate development current situation. Build now or wait?

Wir haben aktuell 20k angespart, welche wir natürlich nicht ausgeben könnten

Who can answer the question is not reading here.

Something positive again: You already have the first child. You know what a child costs and the salary restrictions are already behind you. That is much better than all the childless couples with higher incomes. You can plan relatively securely.

20k + 20k in two years is quite a nice amount of equity, which is also absolutely necessary for incidental purchase costs, kitchen, furnishings, a bit of buffer, etc.

Why shouldn’t you want to invest the 20k in the house? Or am I misunderstanding?

I have and would always completely use the so-called emergency fund for the house. The difference may be that my situation allows me to buy a new washing machine or whatever at any time from the current salary without any problems.

It may be that I overlooked it, but do you even have an interesting property in mind? Otherwise, just keep saving like this for now (very disciplined, I think) and try, but force yourself to remain very sober during every viewing and find all the "hooks." Then you will still need a few months to years until the suitable property is found. Until then, you will have more equity and also know more whether you can sustain it in the long term. Especially without the Corona restrictions, one might perhaps tend to spend more?