This is not about the issue of loan-to-value ratio and equity.
That is exactly what it is about. You just don't understand it. With a 60% payout, every bank will also give you money for the kitchen.
Well, if I declare only 75k instead of 100k, I keep my money and can do whatever I want with it.
But that doesn't mean the bank gives me money at my free disposal.
Yes, the bank does give you exactly that money. You have €25,000 at your free disposal and an additional €25,000 loan. Exactly what you want. Possibly with a worse condition though.
For around €50,000, for example, you will repay it including interest.
No, you won't. Contracts are honored. The bank finances a house. If it is built as planned in the end and there is still money left, the bank has to pay it out. Where should a right of retention come from? At least it is not stated in the contracts.
As I said, in the Volksbank sector and at least with Deutsche Bank, it works – I know this as a banker and customer.