This tiny house design plan fits a one-story, 1-bedroom, 1-bath home on an 18'-0" × 27'-0" rectangular footprint, with 490 square feet of living space. It sits on a foundation and has no porch, deck or patio, so the whole footprint is enclosed living area.
The living room measures 8'-8" × 12'-7" and opens to a U-shaped kitchen of 7'-4" × 7'-6". A dining nook of 7'-0" × 6'-10" sits by the window. The bedroom is 8'-4" × 12'-0", the bathroom is 7'-0" × 5'-5", and a 7'-4" × 4'-2" laundry closet keeps laundry out of the main rooms. Every size comes from the drawn plan, so you can check furniture fit before you build.
Layout highlights
- Single story on a foundation, with a simple 18'-0" × 27'-0" rectangular footprint.
- U-shaped kitchen of 7'-4" × 7'-6" opens directly to the living room.
- Dining nook of 7'-0" × 6'-10" sits by the window.
- Bedroom of 8'-4" × 12'-0" is separate from the main living space.
- Laundry closet and a 7'-0" × 5'-5" bathroom are built into the plan.
Room sizes
| Room | Size | Area |
|---|---|---|
| Living Room | 8'-8" × 12'-7" | 109 sq ft |
| Bathroom | 7'-0" × 5'-5" | 38 sq ft |
| Dining Nook | 7'-0" × 6'-10" | 48 sq ft |
| Bedroom | 8'-4" × 12'-0" | 100 sq ft |
| U-Shaped Kitchen | 7'-4" × 7'-6" | 55 sq ft |
| Laundry Closet | 7'-4" × 4'-2" | 30 sq ft |
Who this plan suits
This plan suits a single person or couple who want a compact, one-level home with a real kitchen, a dining spot and in-unit laundry. It also works as a guest house or rental unit where an enclosed 490 sq ft layout with no outdoor structures is wanted.
How this plan was made
It was generated in AI Architectures Plan Studio from this one-line brief: “Tiny house on a 18 x 27 ft rectangular footprint (486 sq ft), one story, on a foundation: 1 bedroom, 1 bath, U-shaped kitchen open to the living room, dining spot by the window, 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 makes a good tiny house design plan?
A good tiny house plan uses a simple rectangular footprint and places each room so little space is lost to hallways. Here, the kitchen opens to the living room and the dining nook sits by the window, which keeps the main area open at 490 sq ft.
Can this tiny house be built on a foundation?
Yes, this plan is drawn as a one-story home on a foundation, with an 18'-0" × 27'-0" footprint. Foundation type, structure and energy requirements vary by location, so have a local engineer or builder review the plan and your local code before construction.
How can I customize this plan with AI?
You can describe changes in plain language, such as moving the laundry closet or resizing the bedroom, and the AI will propose an updated layout. Check each revised room size and the overall footprint before you rely on the new plan.
Can I use the plan in CAD with DXF files?
DXF is a common exchange format that opens in most CAD programs, so you can import the plan to measure, edit or add details. Confirm units and scale after import, and have the final drawings reviewed before permit submission.