Additional construction costs for a house on a 120k Euro plot

We stayed under €2K with the earthworks without a basement.

Then is it the barracks? There are those communal areas for which you are also asked to pay. And right behind it, the moor begins... Better to factor in a buffer. They are also all different height plateaus. The cost estimate for the basement was €70,000.

We stayed under 2 k€ for the earthworks without a basement.

Without personal contribution? Which conditions favor that? Generally, you always read about around 10,000.

Then is it the barracks? There are communal areas there for which you also get charged. And right behind that the moor starts... Better to factor in a buffer. There are also all different height plateaus. The cost estimate for the cellar was €70,000

Where does it say anything about a cellar?

And the moor is far away.

We had hardly any soil replacement (at one spot up to 80 cm, otherwise up to 50 cm) and the hill is still on the property

If you have done an on-site inspection, you will see directly behind the fence is a moor area or former fish ponds. So soil analysis is mandatory. And was the scope of requirements too narrow and the prospect of a 5-year construction site