As more families embrace multigenerational living, many are searching for ways to stay close while also maintaining their independence. Merging two households into one big space doesn’t always work for everyone. What many families really want is the best of both worlds: being together while also having the personal privacy that a single-family home offers. This is where duplex house plans shine. They allow you to live under one roof with separate, well-defined spaces, so everyone can have their own area while still staying connected.
Let’s explore 8 fantastic duplex plans that offer different bedroom options based on your family size, while maintaining a perfect balance between togetherness and privacy.
1-Bedroom Duplex House Plans: Ideal for Couples or Singles
If you’re just starting out or looking to downsize, these 1-bedroom duplex house plans give you everything you need in a compact, functional space.
52375WM – One-Story Duplex House Plan
- Square Footage: 395 sq. ft. per unit
- Bedrooms/Bathrooms: 1 bed, 1 bath per unit
- Highlights: Plan 52375WM is all about making the most of its space. The open living area and kitchen make it feel roomy despite its smaller footprint. Each unit has a cozy private patio behind the bedroom, ideal for relaxing outdoors. Plus, the charming front elevation makes it look like a single-family home, adding a touch of classic appeal.
420145WNT – Exclusive Country Ranch Duplex House Plan
- Square Footage: 612 sq. ft. per unit
- Bedrooms/Bathrooms: 1 bed, 1 bath per unit
- Highlights: This simple and minimalist design is a fantastic choice for families looking to stick to a budget without sacrificing style. The vaulted ceilings in the open living room and kitchen make the space feel surprisingly roomy and welcoming. You’ll love the shared front porch for family chats, while each unit has its own entrance to keep things private. It’s a smart, cozy option that blends functionality with contemporary country charm.
2-Bedroom Duplex House Plans: Perfect for Small Families or Downsizers
These 2-bedroom duplex plans work well for small families or aging parents who still want a little more space but don’t need a huge home to manage.
623358DJ – Modern Cottage Duplex House Plan
- Square Footage: 1,231 sq. ft. per unit
- Bedrooms/Bathrooms: 2 beds, 1 bath per unit
- Highlights: This plan is perfect for young families. Each unit clusters the bedrooms on one side, so kids are conveniently close by. The shared back patio, which you can access right from the dining areas, is great for outdoor family gatherings. Plus, with garages on opposite ends, you get a bit more separation when coming and going.
51967HZ – Craftsman Cottage Duplex House Plan
- Square Footage: 1,048 sq. ft. per unit
- Bedrooms/Bathrooms: 2 beds, 2 baths per unit
- Highlights: Plan 51967HZ combines classic craftsman charm with the modern amenities that today’s families appreciate. The open-concept kitchen and living area in each unit are perfect for gathering and making memories. We love that each unit has its own private rear porch, offering a cozy retreat after a busy day.
3-Bedroom Duplex House Plans: Ideal for Growing Families
If you’ve got a growing family or need an extra room for an office or guests, 3-bedroom duplexes give you the flexibility to adapt as life changes.
42427DB – Two-Story New American Duplex House Plan
- Square Footage: 1,528 sq. ft. per unit
- Bedrooms/Bathrooms: 3 beds, 2.5 baths per unit
- Highlights: This layout is perfect for families who enjoy spending time together. The kitchen sits conveniently between the dining area and living room, providing plenty of space for hosting. The three bedrooms are tucked away upstairs for privacy—striking a great balance between shared family time and personal space.
100327GHR – Exclusive Modern Duplex House Plan
- Square Footage: 1,347 sq. ft. per unit
- Bedrooms/Bathrooms: 3 beds, 2.5 baths per unit
- Highlights: This modern design is a real standout for urban living. Each unit comes with its own charming front porch and a one-car garage, making city life a bit easier. Upstairs, the layout is incredibly efficient, and the master bedroom boasts a cathedral ceiling that not only looks stunning but also makes the room feel spacious.
4-Bedroom Duplex House Plans: Space for Larger Families
When you need space for a big family or frequent guests, these 4-bedroom duplex plans provide the extra room you’re looking for without giving up that sense of privacy.
330010WLE – Exclusive Duplex House Plan with Home Office
- Square Footage: 2,259 sq. ft. per unit
- Bedrooms/Bathrooms: 4 beds, 3 baths per unit
- Highlights: Plan 330010WLE is ideal for larger families. The main level is all about coming together and entertaining, featuring a cozy fireplace, a wet bar, and an extra-large kitchen island. Plus, there’s an office that can easily be turned into a fifth bedroom if you need it. This home truly prioritizes space and comfort!
666215RAF – 3-Story Modern Duplex House Plan
- Square Footage: 2,573 sq. ft. per unit
- Bedrooms/Bathrooms: 4 beds, 3.5 baths per unit
- Highlights: If you’re looking for more space, this duplex house plan has you covered. With roomy bedrooms and three levels, it’s ideal for families who like to spread out. Each unit includes a two-car garage and a fourth bedroom on the main level, complete with its own private patio—perfect for a bit of extra privacy.
Duplex House Plans Perfect for Multi-Generational Living
Multigenerational living doesn’t have to mean giving up your personal space. With these duplex house plans, you get the best of both worlds—shared moments with family and the privacy you need to live comfortably. Whether you’re planning to live with your parents, your grown kids, or just want to be close to loved ones, these house plans offer flexibility for any lifestyle.
If you’re interested in exploring more options, check out our full multi-family house plans collection. Or, if a single-family home with features for multi-generational living is a better fit for your family, dive into our multi-generational house plans collection for designs that balance space and privacy.