Hi! Thank you for your quick feedback. We have financing and land. We will also have a general contractor and the TÜV will "monitor." But I want to get into the topic myself. Also, I don't know how well the TÜV monitors. I heard that you should also monitor yourself and basically point out things to the TÜV if necessary. So ultimately I need a book that tells a woman what to pay attention to in the individual services/construction phases/connections/expansions etc. What makes sense, where shortcuts are taken, what is nonsense. A forum is of course cool, but if there is a bible, I would gladly read it. Thanks to you!