The planner does not perform any calculations according to DIN 276

: My impression is that you are focusing too much on what the architect does or fails to do. Is she ignoring you? Take measures to change that, and since that is not provided to you – which is no further problem – hire someone to do that for you. Otherwise, nothing will change. Your father and you have concrete demands regarding what should be delivered from your point of view. has already given sufficient indications as to what would constitute a legal claim. If that is not delivered, demand damages or withhold payment. Whoever lets themselves be pushed will be pushed further by a bully.