The average American living room measures 12 by 18 feet, or about 216 square feet, and comfortably seats six to ten people. Small living rooms average 10 by 13 feet, or around 130 square feet, and fit two to three people, possibly four depending on the configuration. Large living rooms average 15 by 20 feet, […] The post Average Living Room Size: Dimensions, Seating, and Layout Planning appeared first on Building and Construction .