3-bedroom ADU floor plans

This compact ADU layout prioritizes efficiency without sacrificing comfort. The master bedroom includes a private en-suite bathroom, while the two smaller bedrooms share a central bathroom. An open floor plan connects the kitchen, dining, and living areas, creating a sense of spaciousness. This design is perfect for narrow lots or homeowners looking to maximize functionality in a smaller footprint.

This ADU layout is ideal for homeowners who want to provide a true, private master suite. The master bedroom not only contains a large en-suite bathroom with a linen closet and walk-in closet but it is also separated from the other two bedrooms by the ample living space.

Though only 20 square feet larger than the last ADU design, these architectural plans allocate the space much differently. With three bedrooms and two baths, this ADU floor plan's master bedroom contains an en-suite bathroom without the walk-in closet, and the third bedroom opens onto the private terrace. This layout makes an excellent choice as a potential rental unit, as the third bedroom can easily be utilized as a home office, yoga studio, or other flexible living space to accommodate the needs of a wide variety of renters.

Designed with renters in mind, this floor plan includes a large, open-concept living and dining area that flows seamlessly into the kitchen. The master bedroom features a private en-suite bathroom, while the other two bedrooms share a full bath. The third bedroom, located near the front entrance, can double as an office or creative workspace, making it ideal for professionals or small families.

This versatile ADU layout offers a balance of privacy and communal space. The master bedroom is tucked away at the back of the unit, complete with a walk-in closet and en-suite bathroom. The other two bedrooms share a bathroom and are located near the living area. The spacious kitchen includes a central island, perfect for entertaining or casual dining. A sliding door from the living room leads to a private outdoor patio, adding an extra layer of livability to the design.

Coming in at just under the maximum square footage of 1200 square feet for ADUs, this design plan mimics the layout of a traditional single-family ranch, with the living area and kitchen on one side and all 3 bedrooms on the other. This layout is common with homeowners who want to provide a place for their extended family, like their adult children and grandchildren, to live and create a true multigenerational family home.

A good 2-bedroom ADU has private bedrooms, open living spaces, lots of natural light, and smart storage. You can also add extras like a second bathroom or a patio to make it more functional.

Use an open floor plan, big windows, and light colors to make it feel roomy. Built-in storage and multi-use furniture, like a kitchen island with seating, can help maximize space.

Popular layouts include L-shaped designs for corner lots, rectangular plans for narrow spaces, or even two-story options if you’re short on land but need more room.

Absolutely. They’re great for renting to small families or roommates, and they also work well for multigenerational living, giving everyone their own space.

They usually range from 600 to 1,200 square feet. Smaller ones work well for tight lots, while larger ones can include extra features like a second bathroom or bigger kitchen.

Think about how you’ll use it—rental, family, or guests. Focus on natural light, privacy between bedrooms, and features that fit your lifestyle, like extra storage or outdoor access.

It depends on your lot size and goals. Open layouts work well for small spaces, while larger lots can fit more customized designs like two bathrooms or extra living areas.

1-bedroom ADU floor plans are perfect for singles or couples, offering compact layouts like studio ADU floor plans, often starting at 400–500 sq. ft. In contrast, 2-bedroom ADU floor plans provide more flexibility, accommodating small families or roommates with sizes ranging from 750 sq. ft. to 1,200 sq. ft. For even larger families, 3-bedroom ADUs or even 4-bedroom floor plans are ideal, often designed as 2-story ADUs or layouts above a garage to save space on smaller lots.

Yes, garage conversions are a popular choice for 2-bedroom ADUs. You can choose from narrow ADU plans to maximize a small footprint, or expand the garage to create a 750–1,000 sq. ft. unit. Floor plans to convert a 2-car garage into living space often feature an open-concept kitchen and living room, with bedrooms on opposite sides for privacy. For more room, consider ADU garage conversion plans with an additional floor above the garage.

For smaller lots, ADU floor plans of 500–750 sq. ft. offer smart layouts like granny flat floor plans or narrow designs that fit tight spaces. Mid-sized 2-bedroom plans, around 1,000 sq. ft., allow for extras like a second bathroom or a dedicated laundry room. Larger ADU floor plans, up to 1,200 sq. ft., can include 2-story ADU designs or features like an ADU above the garage, maximizing vertical space. Whether you’re working with small ADU floor plans or larger ones, each can be tailored to your needs.