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3-Family House Plans

Also known as triplex house plans, these designs can accommodate three families or a multigenerational family. Whether you’re a professional builder looking to build a multifamily home, a large family with several generations wanting several units for everyone, or a regular homebuyer who wants to make a smart investment by building units for rental purposes, explore this collection to discover how surprisingly upscale and comfortable a three family home design can feel.

Some of the house plan designs in this collection feature units stacked on top of one another. This is a good way to maximize space on a narrow or tight lot, especially an infill lot in a busy city where land can be expensive. Separate entrances to the different levels ensure privacy for the occupants of each unit.

Other designs here feature side-by-side configurations, where the units share walls. While most of the units are identical, not all of them are, so you can choose from different configurations to fit the needs of each unit’s occupants. Varied layouts also bring individuality to keep the floor plans from feeling too cookie-cutter. Not everyone needs a garage (especially in a city with good public transportation or ample street parking), so choose a design with or without one. Some triplex plans even feature a mix. To save money while providing parking, choose a layout with carports.

Some of these 3-family house plans are quite large. How much space do you need? How about a three-bedroom layout with an open floor plan, big kitchen, and private garage? Look for surprisingly upscale features like multi-sided fireplaces, private master bathrooms, and fireplaces. Private decks give each unit outdoor living and a place to host summer barbecue parties.

The exteriors of these triplex house plans feature a variety of styles, from country porches to traditional brick and rustic Craftsman details. Porches create a neighborhood-friendly vibe. Layouts with units stacked vertically (for example, a basement unit, a main-floor apartments, and a second-floor layouts) can look much more like a single-family home than a multifamily building.

Explore the 3-family house plans collection and find the right multifamily layout.