House Plan 1615 has 3,635 square feet and so much more than you expect to find in a home. Beyond the split bedrooms and open concept living, you'll find an office off the foyer for the at-home worker and a school room upstairs for at-home learning. There's also a gym and a rec room for the kids, but it's the bright, vaulted hearth room—set apart from the rest of the house—that really makes this design stand out.