Craftsman ADU with 1 Bedroom Under 400 Sq Ft — 368 Sq Ft
This adorable Craftsman ADU fits 368 heated square feet into a smart, efficient footprint. It includes one bedroom, one full bathroom, and a vaulted living area. The design blends Craftsman charm, cottage warmth, and country simplicity into a compact, comfortable home.
Exterior & Curb Appeal
The exterior gives a cozy, grounded feeling with a modest gabled roof and classic Craftsman touches like exposed rafters and tapered posts. The façade is balanced and clean, with trim and siding details that amplify charm without excess. At just 16′ wide and 23′ deep, it works beautifully on small lots, backyard spaces, or as a detached guest cottage. The maximum ridge height is about 14′-3″, keeping the scale friendly and approachable.
2D Floor Plan & Interior Layout
You enter directly into the main living area. The walls open up under the vaulted ceiling, creating a roomy, airy feel in what is still a small space. The living and kitchen zones flow together—with the kitchen tucked to one side—so you don’t lose connectivity while keeping each area functional.
The bedroom is placed for privacy but remains accessible; it includes a closet and built-in shelving for storage. The full bathroom sits nearby, minimizing circulation and giving easy access from both living and sleeping spaces. All rooms are oriented to make smart use of every square foot.
Porch & Outdoor Living
Though modest, the home may include space for a small covered entry or porch—just enough to provide shelter and a welcoming transition from outside to inside. With clever landscaping or a small deck, you can easily expand your usable outdoor area without changing the core footprint dramatically.
Structure & Specifications
The exterior walls are built with sturdy 2×6 framing for structural strength and better insulation. The ceiling on the main level is 9 feet, with vaulted zones adding vertical interest. The roof is truss-framed with a 5:12 pitch. Foundation is usually crawlspace, though site conditions may allow for slab options. The compact 16′ by 23′ footprint keeps materials and labor more manageable.
Lifestyle & Cost
This ADU is perfect for someone wanting minimal but complete living—ideal for a guest suite, rental unit, or cozy primary home. The open layout feels more expansive than the square footage suggests, and thoughtful storage keeps clutter at bay. With its compact size, the home is affordable to operate and maintain.
In the U.S., the estimated construction cost for a home of this nature typically ranges from $90,000 to $150,000 USD, depending on finishes, labor, and site conditions. This little Craftsman ADU proves small homes can still feel warm, functional, and beautifully designed.
