Another huge of floor plans is that they allow you to see how rooms relate one to the other. It's obvious that your home is powering both the dining room and a family room, along with barndo a video, you only see one room at a stretch and can't easily tell how rooms connect or the relative sizes of the rooms. And neither video nor virtual tours effectively in small spaces much like a powder room or walk-in closet. There just isn't enough room to move a camcorder around, but a still camera using a wide angle lens is adequate nicely.
...