Barndominium Floor Plans, Explained by Span
Barndominium floor plans break the rules stick-built plans live by — there are no load-bearing interior walls, so every wall is a choice. That freedom is glorious and paralyzing. The way through: plan by span. Your building's width decides the layouts that feel right.
Plan logic by building width
| Width | What it plans like |
|---|---|
| 30-ft span | Rooms on one side of a hallway spine; open core living |
| 40-ft span | The barndo sweet spot: open great room + two-room depth |
| 50–60-ft span | True open concept with island kitchen; wings and lofts |
Three plans that keep working
- The open-core (40×60, 3bd/2ba): great room and kitchen across the middle 24 ft, bedrooms flanking both gable ends, laundry-mudroom at the back door. The most-built barndo plan in America for a reason.
- The shouse split (40×70): 40×45 living, 40×25 shop with its own roll-up — insulated wall and a fire-rated door between.
- The dogtrot (50×60): two conditioned boxes with a covered breezeway between — separates guest space or office, and the porch is built into the frame.
The rules worth keeping
- Wet walls together: kitchen, baths, laundry on one or two plumbing runs — it's most of your interior savings.
- Bedrooms on gable ends: real windows in real walls, away from the great-room span.
- Plan the mezzanine early: a loft wants 14–16 ft eaves — that decision belongs to the steel order, not the framing stage.
Price yours in 3D — free
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Open the 3D Designer →Frequently asked questions
Where can I get barndominium floor plans?
Plan books sell generic PDFs, but a barndominium is clear-span — any layout fits any building. Our free 3D designer includes a floor-plan editor: draw your rooms inside your exact building size and price the whole thing live.
What is the most popular barndominium floor plan?
The 40x60 open-core 3-bed/2-bath: great room and kitchen across the center, bedrooms on the gable ends, laundry at the back entry. It fits the 40-ft span perfectly and keeps plumbing on two walls.
Do barndominiums need load-bearing interior walls?
No — the steel frame carries the roof, so interior walls are partitions only. You can change the plan years later without touching structure.