1 Bedroom ADU House Plan with Open Floor Plan – 654 Sq Ft

Efficient Single-Level Living

The Durango 30546 is a compact ADU house plan offering 654 square feet of heated living space, designed with a 20-foot width and 35-foot 8-inch depth. This one-story structure is optimized for urban infill lots, backyard placements, or accessory dwelling applications. The exterior profile features an 8:12 roof pitch and a maximum building height of 20 feet, providing a clean, scaled-down aesthetic that complements primary residences while maintaining a low visual footprint.

The interior centers on an open-concept core that integrates the living room and kitchen to maximize usable space. A 9-foot ceiling height throughout enhances the sense of volume and allows natural light to penetrate the living area. The kitchen includes an eating bar that provides a practical transition point for casual dining and social interaction, while the private bedroom suite features a dedicated walk-in closet for efficient storage. First-floor laundry adds technical utility, ensuring the home is equipped for long-term residency or rental use.

Direct access to a private patio extends the livable square footage and provides an external connection that prevents the interior from feeling confined. The 654-square-foot plan is engineered for ease of assembly, utilizing a straightforward rectangular footprint that simplifies framing and foundation work. Built on a slab foundation, this design concentrates all necessary amenities—including a full bathroom and functional kitchen—into a single-level configuration, providing a practical solution for secondary housing or independent living.