This single-level detached ADU has a 27'-11" × 32'-6" footprint and 830 sq ft of living space, with two bedrooms and one bathroom. The living room is the largest room at 13'-3" × 15'-9". The 8'-0" × 13'-7" kitchen sits beside it, so cooking and daily life share one open area. A covered porch extends the living space outdoors.
A 4'-6" × 15'-4" hall leads to the private rooms. Bedroom 1 measures 12'-3" × 10'-0". Bedroom 2 measures 7'-4" × 12'-11" and can serve as a second bedroom, home office or guest room. The bathroom is 7'-4" × 6'-10". A 4'-6" × 4'-5" laundry closet keeps the washer and dryer out of the main rooms. The plan has no garage.
Layout highlights
- Living room of 13'-3" × 15'-9" is the largest room and anchors the open plan.
- Kitchen of 8'-0" × 13'-7" sits next to the living room.
- Bedroom 1 is 12'-3" × 10'-0"; Bedroom 2 is 7'-4" × 12'-11".
- One 7'-4" × 6'-10" bathroom and a 4'-6" × 4'-5" laundry closet.
- Compact 27'-11" × 32'-6" single-level footprint with a covered porch and no garage.
Room sizes
| Room | Size | Area |
|---|---|---|
| Bedroom 2 | 7'-4" × 12'-11" | 95 sq ft |
| Bathroom | 7'-4" × 6'-10" | 50 sq ft |
| Laundry Closet | 4'-6" × 4'-5" | 20 sq ft |
| Hall | 4'-6" × 15'-4" | 70 sq ft |
| Bedroom 1 | 12'-3" × 10'-0" | 122 sq ft |
| Kitchen | 8'-0" × 13'-7" | 109 sq ft |
| Living Room | 13'-3" × 15'-9" | 209 sq ft |
Who this plan suits
This plan suits homeowners adding a rental, a guest house or a space for family on the same property. It needs a backyard lot that can fit a 27'-11" × 32'-6" footprint plus the setbacks your local code requires.
How this plan was made
It was generated in AI Architectures Plan Studio from this one-line brief: “Detached backyard ADU (accessory dwelling unit) with about 850 sq ft of living space: 2 bedrooms, 1 bath, open kitchen and living, laundry closet, covered porch.” 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 850 sq ft ADU plans?
They are plans for a small accessory dwelling unit, usually a detached backyard home, with its own kitchen, bath and sleeping space. This version has 830 sq ft of living space on one level, with 2 bedrooms and 1 bath.
What affects the cost and lot requirements of this ADU?
The main drivers are site work, utility connections to the main house or the street, foundation type and local permit fees. The 27'-11" × 32'-6" footprint must fit within your setbacks, so check lot size, access and height limits with your local planning office.
Can I change this plan by chat?
Yes. You can ask for changes in plain language, such as resizing or moving rooms, adding a garage and choosing its side, or fitting a narrower or wider lot. The plan is regenerated so the rooms and sizes stay consistent.
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 drafting and detailing, and the IFC imports into BIM tools. A local architect or engineer should review the plans before construction to confirm they meet your local code.