For millennials, luxurious home design takes a different form than it does for many of their older peers. As you design your dream home, here are 5 trends that will help guarantee a long and happy life in your new home. Clean Lines. Millennials don't generally value clutter and filling spaces as much as other generations. They like the freedom of having less to worry about and care for. In home design, this usually translates into open spaces and clean lines.