This tiny house plan fits 400 square feet of living space on a single story, with a 16'-0" × 25'-0" rectangular footprint built on a foundation. It has one bedroom, one bathroom, an L-shaped kitchen, a dining nook and a living area, with no porch, deck or patio.
The bedroom measures 8'-4" × 8'-0" and has a closet of 5'-4" × 2'-9". The bathroom is 5'-4" × 4'-10". The living area measures 14'-1" × 8'-2". The L-shaped kitchen is 6'-11" × 6'-1", and the dining nook is 6'-8" × 6'-1". Every room is compact and each has a stated size, which makes the plan easy to read and adjust before you build.
Layout highlights
- One bedroom of 8'-4" × 8'-0" with its own dedicated closet.
- Bedroom closet measures 5'-4" × 2'-9" for built-in storage.
- L-shaped kitchen of 6'-11" × 6'-1" paired with a separate dining nook.
- Living area of 14'-1" × 8'-2" is the largest room in the plan.
- Single story on a 16'-0" × 25'-0" rectangle, with no porch or deck.
Room sizes
| Room | Size | Area |
|---|---|---|
| Bedroom | 8'-4" × 8'-0" | 67 sq ft |
| Bedroom Closet | 5'-4" × 2'-9" | 15 sq ft |
| Bathroom | 5'-4" × 4'-10" | 26 sq ft |
| Living Area | 14'-1" × 8'-2" | 114 sq ft |
| Dining Nook | 6'-8" × 6'-1" | 41 sq ft |
| L-Shaped Kitchen | 6'-11" × 6'-1" | 42 sq ft |
Who this plan suits
This plan suits a single person or a couple who want a one-bedroom home with a full bathroom and a real kitchen in 400 square feet. It also works as a guest house, rental unit or small primary residence on a lot that allows a compact single-story foundation build.
How this plan was made
It was generated in AI Architectures Plan Studio from this one-line brief: “Tiny house on a 16 x 25 ft rectangular footprint (400 sq ft), one story, on a foundation: 1 bedroom with a closet, 1 bath, L-shaped kitchen with a dining nook, living area. 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 400 sq ft tiny house plan?
This plan has one bedroom with a closet, one bathroom, an L-shaped kitchen, a dining nook and a living area, all on one level. Room sizes are listed so you can check furniture fit and clearances before you commit to a build.
Can this tiny house be built on a foundation?
Yes, the plan is drawn for a foundation build on a 16'-0" × 25'-0" rectangular footprint. Foundation type, framing and structural details depend on your site, climate and local code, so have a local engineer or building department review them before construction.
Can I customize this plan with AI?
Yes. You can describe changes in plain language, such as a different kitchen layout, a larger closet or a moved bathroom, and the AI will propose an updated layout. Check each change against your local code and your own measurements before you build.
Can I use this plan in CAD with a DXF file?
The plan can be exported as a DXF file, which opens in most CAD programs, including AutoCAD, LibreOffice Draw and many others. You can then edit walls, rooms and dimensions, add details or send the drawing to a designer or contractor.