This 20x40 tiny house plan is a one-story home on a foundation with a 20'-0" × 40'-0" rectangular footprint. It has two bedrooms, one bathroom, and an open kitchen, dining and living area, plus a laundry closet. There is no porch, deck or patio, so the entire footprint is enclosed living space.
The kitchen with island measures 8'-8" × 8'-8" and sits next to the dining area at 8'-8" × 9'-5". The living room is 9'-0" × 18'-6". Bedroom 1 is 9'-4" × 11'-11" and Bedroom 2 is 8'-4" × 11'-11". The hall is 7'-6" × 6'-10", the bathroom is 5'-5" × 6'-10", and the laundry closet is 4'-5" × 6'-10".
Layout highlights
- Single-story rectangle, 20'-0" × 40'-0", with no stairs to climb.
- Kitchen with island, dining and living room share one open area.
- Living room measures 9'-0" × 18'-6", the longest room in the plan.
- Two bedrooms of 9'-4" × 11'-11" and 8'-4" × 11'-11".
- One 5'-5" × 6'-10" bathroom and a separate laundry closet.
Room sizes
| Room | Size | Area |
|---|---|---|
| Kitchen with Island | 8'-8" × 8'-8" | 75 sq ft |
| Dining | 8'-8" × 9'-5" | 82 sq ft |
| Living Room | 9'-0" × 18'-6" | 166 sq ft |
| Bathroom | 5'-5" × 6'-10" | 37 sq ft |
| Hall | 7'-6" × 6'-10" | 51 sq ft |
| Laundry Closet | 4'-5" × 6'-10" | 30 sq ft |
| Bedroom 1 | 9'-4" × 11'-11" | 111 sq ft |
| Bedroom 2 | 8'-4" × 11'-11" | 99 sq ft |
Who this plan suits
This plan suits a couple, a small family, or a owner who wants a guest room or home office beside the main bedroom. It also fits buyers who want a compact one-story home with no outdoor structures to build or maintain.
How this plan was made
It was generated in AI Architectures Plan Studio from this one-line brief: “Tiny house on a 20 x 40 ft rectangular footprint (800 sq ft), one story, on a foundation: 2 bedrooms, 1 bath, open kitchen with island, dining and living, laundry closet. No porch, deck or patio.” 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 included in a 20x40 tiny house plan?
This plan is a single-story, two-bedroom, one-bath home with an open kitchen, dining and living area and a laundry closet. It is drawn for a 20'-0" × 40'-0" footprint on a foundation, with no porch, deck or patio.
Can a 20x40 tiny house be built on a foundation?
Yes, this plan is designed for a foundation. The foundation type, such as slab, crawl space or basement, depends on your site, soil and local code, so have a local engineer or builder confirm it before construction.
Can I customize this plan with AI?
Yes. You can describe changes in plain language, such as swapping bedroom sizes, moving the laundry closet or reshaping the kitchen island. The layout is then redrawn within the same rectangular footprint. Have any changes reviewed against local code before you build.
Can I use the plan in CAD with a DXF file?
DXF is a common exchange format that opens in most CAD programs, so you can measure, annotate or edit the drawing there. Check dimensions against your own survey and permit requirements before using it for construction.