A city is only as good as the islands that feed it. Your Bauplan shouldn't stop at the housing district; it must extend to your industrial zones. The Production Cluster Don't scatter farms randomly. Use a "Hub and Spoke" design:
Assuming you are referring to a city plan or a layout for a city in Anno 1404, I'll provide a general report. Please note that without more specific information, this report will be a general outline. anno 1404 bauplan stadt
Just tell me what kind of “Bauplan” interests you most: efficiency, aesthetics, or early/mid/late game. A city is only as good as the islands that feed it