This studio ADU plan fits 350 square feet of living area into a single-level footprint of 18'-1" × 21'-0". The covered entry opens into the Living / Sleeping room, which measures 10'-8" × 14'-9" and holds a bed, seating and storage in one open space.
The kitchenette (5'-1" × 11'-7") and the full bath (5'-1" × 7'-0") share the same 5'-1" width, which lets the wet rooms be grouped together. A stacked laundry closet at 3'-1" × 3'-1" keeps the washer and dryer out of the main room. There is no garage and no separate bedroom, so the plan works as a compact rental, guest suite or home office with a bath. Each space is reached from the main room without a hallway.
Layout highlights
- Open Living / Sleeping room of 10'-8" × 14'-9" combines bed and seating areas.
- Kitchenette measures 5'-1" × 11'-7", a full run of counter in a narrow room.
- Full bath at 5'-1" × 7'-0" sits beside the kitchenette's matching 5'-1" width.
- Stacked laundry occupies only 3'-1" × 3'-1" and stays out of the main room.
- Covered entry shelters the door; the whole unit is one level at 18'-1" × 21'-0".
Room sizes
| Room | Size | Area |
|---|---|---|
| Kitchenette | 5'-1" × 11'-7" | 59 sq ft |
| Full Bath | 5'-1" × 7'-0" | 35 sq ft |
| Stacked Laundry | 3'-1" × 3'-1" | 10 sq ft |
| Living / Sleeping | 10'-8" × 14'-9" | 157 sq ft |
Who this plan suits
This plan suits homeowners adding a backyard rental, guest suite or home office who want one bath and no stairs. It needs a lot with room for an 18'-1" × 21'-0" footprint plus required setbacks and utility access.
How this plan was made
It was generated in AI Architectures Plan Studio from this one-line brief: “Studio ADU (no separate bedroom room count beyond one sleeping room): open sleeping and living room, kitchenette, full bath, stacked laundry, covered entry, about 380 sq ft.” 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 are studio ADU plans?
Studio ADU plans describe an accessory dwelling unit with one open room for living and sleeping, plus a kitchenette and bath. This one has 350 sq ft of living area, no separate bedroom and no garage.
What affects the lot and cost of building this plan?
The 18'-1" × 21'-0" footprint must fit within your setbacks, and utility connections to the main house or street affect site work. The kitchenette, bath and laundry are grouped in a compact wet zone, which can keep plumbing runs short. Local permit rules and foundation type also change the final cost.
Can I change this plan by chat?
Yes. You can ask in chat to adjust room sizes, move the covered entry, flip the layout or fit a narrower or wider lot. The plan is regenerated with the updated dimensions.
How do I use the PDF, DXF and IFC files?
The PDF is for review, sharing and permit discussions. The DXF opens in CAD software for editing the 2D drawings, and the IFC loads into BIM tools for 3D coordination. Have a local designer or engineer confirm the plans meet your jurisdiction's requirements.