Apart from the fact that I am really amazed that you were able to buy a property worth EUR 200,000 for < EUR 60,000: If I see it correctly, the property is financed by a bank, and this bank is probably also listed in the land register, right? That drastically limits your search for a bank to finance the house construction. Or am I overlooking something here?
And no, is not a troll, but a competent and helpful forum participant with a sometimes sharp tongue (or sharp fingers), who nevertheless provides amusement (in a positive sense) - at least for me.