Unless you have an excavator with a loader and driver in the family who provides you with equipment and labor for free.
He does!
Overtime is paid out. So the idea that I won’t have any time for the construction site besides work isn’t really true. Of course – within a manageable scope. Annual leave is spent on that, etc. That is taken into account.
The double use again. Not only are you planning your 20,000 for kitchen and so on, as well as covering half the salary, now overtime is mentioned, which reduces your free time without the possibility of accumulating it. That may be nice for petty cash, so the mailbox etc. can be paid, but it will restrict you. I built turnkey with my husband, that is with a general contractor: there were ongoing overtime hours plus 4 weeks of vacation just for painting and flooring work. I definitely used about 120 overtime hours during the ongoing construction to "go there and clarify this and that with the craftsmen," and that from my regular day job. That was stressful. And luckily, I had a sympathetic team leader. I don’t want to talk the whole thing down – with 140sqm it works … maybe. An 8% slope also costs a lot of gravel and supports with L-shaped stones. That is not considered in the costs at all. By the way, we have some floor plan discussions here that refer to the slope and the living level in the basement. Maybe you should take a look there?!