Multi-generational house plans have become extremely popular in the 21st century. Parents move in to look after children, Young adult children return home after college, and parents move in to be looked after. Grandchildren come visit for extended periods. There are many reasons why you may want to consider a multi-generational design. House Plans designed for multiple generations or with In-Law Suites include more private areas for independent living such as small kitchenettes, private bathrooms, and even multiple living areas. Separated spaces are typically are connected to the main house for security and economy - also differentiating the home from a duplex or multi-family home.