There are many reasons that a main-floor master suite makes sense. Maybe your children are getting older and bedrooms on separate floors will allow more privacy for both you and them. Or maybe you're planning to retire in this home. A main-floor master suite will allow you to live on one level of your home after the kids leave, while providing guests a space to stay upstairs. This collection of house plans with master suites on the main floor features our most popular two-story plans.