1-Bed ADU Cottage with Carport Under 500 Sq Ft
This compact ADU offers just 420 square feet of heated space, with one bedroom and one full bath. A two-car carport spans the front, giving it a practical footprint and extra shelter. It’s designed to be efficient, stylish, and functional for a small-lot home, guest unit, or rental space.
Exterior & Curb Appeal
The home presents a clean façade with the carport integrated into the front elevation. The covered carport adds visual weight while giving protection. The home is framed simply, with modern lines and uncluttered exterior elements. The roof height is modest and sets a cozy, approachable tone.
2D Floor Plan & Interior Layout
Upon entering from the carport side, you step into an open living room and kitchen zone—no wasted hallways. The living area flows directly into the kitchen, which includes cabinetry and counter space aligned along one wall for efficiency. Vaulted ceilings of 11 feet elevate the sense of openness.
Toward the rear is the bedroom, complete with a closet tucked neatly inside. The full bathroom sits adjacent to both the living area and bedroom. The layout keeps everything compact and connected, prioritizing flow and minimal transitions.
Bedrooms & Bathroom
The single bedroom is cozy but functional, fitting a bed and essential furniture. The bathroom, placed nearby, accommodates a tub or shower, vanity, and necessary fixtures while preserving interior circulation. No square foot is wasted.
Porch & Outdoor Living
The primary outdoor shelter is the carport itself, which doubles as covered outdoor space. While not a traditional porch, it provides a shaded area right at the front entry. With minimal grounds around the unit, you can add a small patio or deck adjacent to the living spaces to expand outdoor enjoyment.
Structure & Specifications
The building dimensions are approximately 20 feet wide and 37 feet deep. Exterior walls are framed in 2×6 construction for durability and insulation. Roof framing is built using trusses with a 5:12 primary pitch. Living spaces have vaulted ceiling heights up to 11 feet, while standard ceiling height is 9 feet elsewhere. The carport spans 320 square feet and is front-entry. The maximum ridge height reaches about 13 feet, 7 inches.
Lifestyle & Cost
This ADU is perfect for those wanting a compact, low-maintenance home. It suits a single occupant or couple who prioritize simplicity and efficient design. The integrated carport gives added flexibility and usability, turning the exterior into usable covered space.
Estimated U.S. build costs for a unit of this size typically range between $80,000 and $130,000 USD, based on finishes, materials, and labor. It’s a smart, modest solution for comfortable living in a smaller footprint.
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