: I admit, the tone here is sometimes a bit harsh, not to say condescending. Especially beginners and laypeople on the topic of house construction can feel somewhat put off here in the forum. But you can be sure that most people here speak from experience and want to help. Most do not want to elevate themselves by putting others down, but have unfortunately gotten used to a somewhat "rougher" tone on the internet. If someone then takes something the wrong way and lashes out, the atmosphere cools down accordingly. Do not take the doubts about the numbers as a personal attack but as a hint that based on the experience of those who have already built, there are often additional costs. Now, you have the following option: talk to your construction company to provide you with a construction cost breakdown including 50-70 thousand euros for incidental construction costs. It will probably be less, but you would have spoken to experienced people and want to plan a buffer for the financing. They should actually do that. Then you take that to your financial advisor. He then has to find you a bank that has no problems paying out remaining amounts without proof. If there is still some left at the end, you have your money for the kitchen. Regarding the other amounts, I am also rather pessimistic; why should a bank do that? And you should also recalculate whether the lower interest rate but probably longer term is really cheaper for you. But honestly, your financial advisors should actually be telling you all this if they are any good.