This 40x70 barndominium floor plan places 2,010 square feet of living space on one level inside a 40'-0" × 70'-0" rectangle, with a covered porch outside the rectangle. A foyer (8'-4" × 6'-0") opens toward the great room, which measures 18'-6" × 27'-2". The kitchen (8'-4" × 19'-0") has an island and a 3'-8" × 4'-6" pantry, and the dining area (9'-8" × 15'-0") shares the open space with the kitchen and great room.
Four bedrooms are grouped off a 28'-7" × 4'-6" bedroom hall. The primary bedroom (10'-1" × 14'-8") has a 13'-3" × 5'-6" primary bath and a 6'-2" × 6'-10" walk-in closet. Bedrooms 2, 3 and 4 share a 6'-2" × 7'-6" hall bath, and a 4'-2" × 4'-6" half bath serves guests. The laundry and mudroom (8'-4" × 7'-8") works as the utility entry beside the 29'-4" × 20'-6" shop/garage, which sits inside the same rectangle and is not counted in the living area.
Layout highlights
- Great room of 18'-6" × 27'-2" anchors the open living area.
- Kitchen with island (8'-4" × 19'-0") sits next to a 9'-8" × 15'-0" dining area.
- Primary suite combines a 10'-1" × 14'-8" bedroom, 13'-3" × 5'-6" bath and walk-in closet.
- Bedrooms 2, 3 and 4 open off a 28'-7" × 4'-6" hall with a shared bath.
- Shop/garage of 29'-4" × 20'-6" is inside the 40'-0" × 70'-0" footprint.
Room sizes
| Room | Size | Area |
|---|---|---|
| Shop / Garage (40x20 ft) | 29'-4" × 20'-6" | 600 sq ft |
| Dining | 9'-8" × 15'-0" | 145 sq ft |
| Bedroom 3 | 9'-8" × 11'-9" | 113 sq ft |
| Great Room | 18'-6" × 27'-2" | 503 sq ft |
| Bedroom Hall | 28'-7" × 4'-6" | 129 sq ft |
| Laundry / Mudroom | 8'-4" × 7'-8" | 64 sq ft |
| Kitchen with Island | 8'-4" × 19'-0" | 157 sq ft |
| Half Bath | 4'-2" × 4'-6" | 19 sq ft |
| Pantry | 3'-8" × 4'-6" | 17 sq ft |
| Foyer | 8'-4" × 6'-0" | 50 sq ft |
| Bedroom 2 | 7'-4" × 14'-8" | 108 sq ft |
| Hall Bath | 6'-2" × 7'-6" | 46 sq ft |
| Walk-in Closet | 6'-2" × 6'-10" | 42 sq ft |
| Primary Bedroom | 10'-1" × 14'-8" | 149 sq ft |
| Bedroom 4 | 13'-3" × 8'-0" | 106 sq ft |
| Primary Bath | 13'-3" × 5'-6" | 73 sq ft |
Who this plan suits
This plan suits households that want one-level living with a workshop or vehicle bay under the same roof. It needs a lot that can hold a 40-foot by 70-foot rectangle plus the covered porch, setbacks and driveway access to the shop/garage.
How this plan was made
It was generated in AI Architectures Plan Studio from this one-line brief: “Barndominium on a 40 x 70 ft rectangular footprint, one story: 4 bedrooms, 2.5 baths, open great room with kitchen island and dining, laundry, and a 40 x 20 ft shop/garage inside the same rectangle, covered porch outside the rectangle, about 2,000 sq ft of living space.” An AI architect drafted the room program, a layout solver placed every wall and door, and the plan was checked automatically for room sizes, circulation and daylight. The same project produced the PDF sheets, layered DXF, IFC model and 3D model you can download above.
Frequently asked questions
What is a 40x70 barndominium floor plan?
It is a barndominium layout built on a rectangular footprint of 40 feet by 70 feet. This version is a single story with 2,010 sq ft of living space, 4 bedrooms, 2.5 baths and a shop/garage inside the same rectangle.
What affects the cost and lot requirements of this plan?
The simple rectangular footprint and single story keep the structure straightforward, but foundation type, roof span, finishes and local codes will drive the final cost. The lot must fit 40'-0" × 70'-0" plus the covered porch, setbacks and a driveway to the shop/garage.
Can I change this plan by chat?
Yes. You can describe changes in chat, such as moving or resizing rooms, switching the garage to another side, or adjusting the plan for a narrower or wider lot. The layout is regenerated so the rooms still connect.
How do I use the PDF, DXF and IFC files?
The PDF is for reviewing and sharing the plan with builders, lenders or neighbors. The DXF opens in CAD software for drafting and measuring, and the IFC imports into BIM tools. Have a local engineer or architect review the plan before permitting.