Construction insurance - What does it cost with glass inclusion, etc.?

Hello,

in our construction contract it states that we are responsible for a construction performance insurance including the risk of glass and theft of already installed parts.

Does anyone have a tip for me on what that costs?

Thanks
N

approx. EUR 250-400

Construction performance insurances are already available for 100 euros...

We pay 400 € together with the [Bauherrenhaftpflicht].