The question is also, who can even afford a legal dispute. With a dispute value (remaining amount) of €300,000, as the plaintiff you pay a court fee advance of €7,600, about €14,000 in your own attorney fees, if you lose the same amount again for the opposing counsel, about €6,000 for an expert witness, if you take one that the court recognizes, i.e. examined and sworn = extremely expensive. We are quickly over €40,000! And that's without any guarantee that you will win and ever see your money again to put it back into their construction. In hindsight, I wonder how crazy we were to take this step.