This charming 649-square-foot accessory dwelling unit (ADU) offers a compact and practical design for homeowners looking for a smaller living space. With one dedicated bedroom, a flexible additional room, and an open living area, this house plan provides several possibilities for everyday living. Its cottage, cabin, and country-inspired design makes it an appealing option for a backyard home, rental property, or permanent residence.
Compact Design with Flexible Living Space
The main level features an open arrangement connecting the kitchen and living room. The kitchen is positioned along one side of the vaulted space, while the living room occupies the remaining area. This arrangement creates a connected interior without separating the main living spaces into individual rooms.
The plan includes one dedicated bedroom and a flex room that can serve as a second bedroom, home office, or another useful space depending on the owner’s needs. This flexibility allows the layout to accommodate different living arrangements while keeping the overall footprint compact.
Vaulted Kitchen and Living Room
The kitchen and living room feature vaulted ceilings reaching approximately 14 feet, giving the main living area additional vertical space. The first-floor ceiling height is 10 feet, while the vaulted portions create a taller interior over the kitchen and living room.
A covered front porch provides shelter at the entrance. Inside, the kitchen and living room share an open layout, making the central living area suitable for daily activities, relaxing, and spending time together.
Bedroom, Flex Room, and Laundry
The bedroom and bathroom are located toward the back of the plan. The dedicated bedroom provides a separate sleeping area, while the flex room offers additional room for a home office or an alternative sleeping space.
Laundry is conveniently tucked into an alcove along the route toward the bedroom and bathroom. This placement incorporates laundry into the compact layout without requiring a separate laundry room.
Exterior Dimensions and Construction Details
This single-story ADU measures approximately 18 feet wide and 37 feet 6 inches deep, with a maximum ridge height of 18 feet 2 inches. The exterior walls are designed for 2×6 framing, and the primary roof pitch is 9.5:12.
The plan is designed for a monolithic slab or slab foundation, with a crawlspace available as an optional foundation. Its compact dimensions and straightforward one-level arrangement make it a practical design to consider for a smaller residential property.
A Small ADU with Multiple Possibilities
With 649 square feet of heated living space, one dedicated bedroom, a flexible additional room, one full bathroom, and an open vaulted kitchen and living area, this ADU offers a useful combination of compact size and adaptable space.
Whether planned as a backyard rental, a small permanent home, or a space that can accommodate changing needs, this cottage-inspired design provides a functional layout with the essential living areas arranged on one level.
