Research on the current housing status in the United States, and the features of middle-class and high-end houses, revealed that home space consists of five spaces: living, work and study, resting, service and circulation. A meticulous look at the four-century American housing history disclosed that transformations in the five spaces were profoundly impacted by technology. To predict home space in the near future, research on future technology and lifestyle was performed. There will still be five home spaces, with new and improved components. Technology will bring greater comfort and flexibility to the home interior. Two design solutions for middle-class and high-end levels were projected for the 2020s.