Two-story homes are excellent for providing more interior living space on smaller lots. While some families with young children or households with seniors may prefer not to have stairs, there are so many advantages to a Simple two-story house plan that you may want to consider—especially after you look at the various house designs in this collection. Stacking square footage, for example, gives you more bang for your buck by condensing the most expensive parts of a building—the foundation and roof. Our two-story house plans are available in various sizes, ranging from a simple two-story house plan under 2,000 square feet to large options over 4,000 square feet.