First of all, I’ve created  some rooms, “grown” from random seeds, and then places corridors and walls inbetween. It’s fine, but not realistic, lets call them cubicles.

Second attempt was to create warehouse. Those are big rooms, connected one to each other, no corridors, thick walls.

Third one is “office” floorplan, where many small rooms are located alongside walls, and there might also be some big room in the center. It would be more understandable, if you look at the picture:

Those are currently generated autmatically, all parameters like size/roomcount/doorcount etc are set up in Unity editor. Here is how it looks ingame: