22'x20' Modern Tiny Cabin Floor Plan 1 Bed 1 Bath, 440 Sq Ft

This modern shed roof cabin floor plan delivers 440 sq ft of heated living space in a compact, single-story footprint, built around an open living and kitchen area, one bedroom, and one full bath. A mono-slope roof and a band of clerestory windows on the back wall bring natural light deep into the interior while keeping the entry side private, giving this small cabin a distinctly modern feel without adding square footage.

Inside, the living and kitchen area runs 15'4" x 11'0" as one open space, with the bedroom set at 10'0" x 8'0" and sized to comfortably fit a queen bed and closet. The bathroom measures 5'0" x 8'0" with a laundry closet tucked alongside it, and a full-depth 6'0" x 20'0" covered porch runs the length of the cabin out front, with a shaded pergola section right at the entry.

Construction is straightforward wood stud framing under a mono-slope roof, set on a raised pier foundation that lifts the finished floor about 2 feet above grade, a good match for sloped, wooded, or flood-prone building sites. Building height comes in at 13'8" at the roof, and the plan includes electrical and plumbing layouts alongside the structural drawings, so your builder has everything needed to frame, wire, and plumb the space accurately.

This layout works well as a standalone starter home, a backyard ADU, a guest house, or a rental unit, and it's a popular choice for first-time owner-builders because the small footprint keeps both material costs and the learning curve manageable. If you're downsizing, building a getaway cabin, or adding rentable square footage to an existing lot, this plan is sized to make that project realistic.

As with all Home Plan DIY plans, these drawings are not engineer-stamped and are drawn to California residential codes. Many states and jurisdictions require local engineering review before permitting, so check with your local building department ahead of purchase, and have a licensed structural engineer review the plans before construction begins.