Which legal protection insurance do I need for hall construction?

I want to build an agricultural or forestry machinery hall on my field or meadow, which legal protection insurance is needed for that? I have not started yet, otherwise you won't get legal protection insurance!

It is purely about the construction of the hall and the associated legal risks from contracts and/or permits?

A look into my crystal ball suggests to me: probably none. The insurance premium would probably be too high. It is already difficult to find something like this in the private sector, but then commercial?

I recommend you ask one or two experienced insurance brokers. If they already nod, you can stop searching. not (or only very expensively) insurable.