Although houses, rooms, and personal preferences differ, wall sconces as a general rule of thumb should be placed on the wall between 60-72 inches. For higher ceilings, consider a height minimum of 66 inches. This will prevent the light bulbs in the sconces from accidentally aligning with anyone's eye line. Wherever they are mounted, make sure they don't align with the window frame height — the sconces should be lower than the window. If multiple sconces are in the room, make sure there is at least 6 feet of space between them and, as a final rule, sconces should be at least 6 inches from doors or window frames.