This 20x20 tiny house plan is a one-story home with a 20'-0" × 20'-0" footprint, built on a foundation. It has one bedroom, one bathroom, and an open kitchen and living area. The plan has no porch, deck, or patio, so the whole footprint is enclosed living space.
The kitchen measures 6'-4" × 10'-11" and the living room measures 11'-3" × 10'-11", so both rooms share the same 10'-11" depth. The bedroom is 12'-3" × 6'-8", and the bathroom is 5'-5" × 6'-8". Everything sits on one level with no stairs. Because the footprint is a plain rectangle, the foundation and roof stay simple to frame, and the layout is easy to read at a glance.
Layout highlights
- One story on a foundation, with no stairs between rooms
- Open kitchen, 6'-4" × 10'-11", shares space with the living room
- Living room measures 11'-3" × 10'-11" for seating and daily use
- Bedroom is 12'-3" × 6'-8", sized for a bed and storage
- Full bathroom at 5'-5" × 6'-8", with no porch or deck added
Room sizes
| Room | Size | Area |
|---|---|---|
| Kitchen | 6'-4" × 10'-11" | 70 sq ft |
| Living Room | 11'-3" × 10'-11" | 124 sq ft |
| Bedroom | 12'-3" × 6'-8" | 82 sq ft |
| Bathroom | 5'-5" × 6'-8" | 36 sq ft |
Who this plan suits
This plan suits one or two people who want a compact, single-level home with a separate bedroom and bath. It also fits a guest house or backyard unit where local rules allow a 20'-0" × 20'-0" building.
How this plan was made
It was generated in AI Architectures Plan Studio from this one-line brief: “Tiny house on a 20 x 20 ft rectangular footprint (400 sq ft), one story, on a foundation: 1 bedroom, 1 bath, open kitchen and living. 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 a 20x20 tiny house plan?
It is a small house design built on a square footprint of 20 feet by 20 feet. This version is a single story with one bedroom, one bathroom, and an open kitchen and living area.
Can I build this plan on a foundation?
Yes. The plan is drawn as a one-story house on a foundation, with a simple rectangular footprint that keeps framing and roofing straightforward. Check local zoning, setbacks, and building codes first, and have a licensed professional review the drawings before you apply for a permit.
Can I customize this plan with AI?
Yes. You can describe changes in plain language, such as moving a wall, resizing a room, or changing the kitchen layout, and the plan is regenerated to match. Review any changed room sizes and structure before building.
Can I open the plan in CAD software as a DXF file?
DXF is a common 2D exchange format that most CAD programs can open, so you can use it to measure, annotate, or edit the plan. Check scale and units when you import, and confirm dimensions against the room sizes listed on this page.