It really depends on what type of layout your wanting to layer out your builds, I would sketch a map layout of a piece of paper. Layer parts out on where your wanting these specific locations to be. If you’re trying to plan things out on a map use a blueprint of a image on how your using it, you can either produce one in a painting software to have by your side when setting up the map.
There are examples of a map layout that would look well with incorporating these buildings within the scene, at the end it’s up to you on how your wanting it to look like. Try gathering a few photos that match the concept your going for to get inspired on how to plan your map: Here is a thread thread that goes into more depth about ‘Map planning’.