Explore these multi-family house plans if you're looking beyond the single-family home for buildings that house at least two families. Duplex home plans are popular for rental income property. Often the floor plans for each unit are nearly identical. Sometimes they are quite different. Some units may feature decks or patios for added interest. If you'd like a triplex, a fourplex or beyond, you may find it here. If not, then think about building a duplex plan, but with three or four units in a row. Call our friendly modification team for free advice or a free estimate on changing the plans. Go ahead and become a landlord! You may even choose to live in one of the units yourself.