This 800 sq ft ADU plan is a single-story detached backyard unit with two bedrooms and one bathroom. The footprint measures 26'-11" × 32'-2". A covered entry porch leads into the living room, which measures 11'-3" × 17'-9" and sits next to the kitchen, 13'-3" × 8'-8", so cooking, dining and sitting share one open space.
A short hall, 7'-6" × 6'-2", separates the sleeping area from the living space. Bedroom 1 is 10'-0" × 11'-3" and Bedroom 2 is 9'-4" × 11'-3". The bathroom, 5'-5" × 9'-5", opens off the hall and serves both bedrooms. A laundry closet, 7'-6" × 2'-11", keeps the washer and dryer out of the main rooms. All 800 sq ft is on one level with no stairs, which keeps the layout simple to furnish and build.
Layout highlights
- Living room of 11'-3" × 17'-9" opens to the kitchen for one shared main space.
- Kitchen of 13'-3" × 8'-8" sits beside the living room.
- Bedroom 1 is 10'-0" × 11'-3"; Bedroom 2 is 9'-4" × 11'-3".
- Single 5'-5" × 9'-5" bathroom opens off the 7'-6" × 6'-2" hall.
- Laundry closet of 7'-6" × 2'-11" and a covered entry porch on a 26'-11" × 32'-2" footprint.
Room sizes
| Room | Size | Area |
|---|---|---|
| Bedroom 2 | 9'-4" × 11'-3" | 105 sq ft |
| Bedroom 1 | 10'-0" × 11'-3" | 113 sq ft |
| Bathroom | 5'-5" × 9'-5" | 51 sq ft |
| Hall | 7'-6" × 6'-2" | 46 sq ft |
| Laundry Closet | 7'-6" × 2'-11" | 22 sq ft |
| Kitchen | 13'-3" × 8'-8" | 115 sq ft |
| Living Room | 11'-3" × 17'-9" | 200 sq ft |
Who this plan suits
This plan suits homeowners adding a rental, guest house or space for family in a backyard, where one level and no garage are preferred. It needs a lot with room for a 26'-11" × 32'-2" footprint plus the setbacks and access your local rules require.
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 800 sq ft of living space: 2 bedrooms, 1 bath, open kitchen and living, laundry closet, covered entry 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 800 sq ft ADU plans?
They are plans for an accessory dwelling unit with about 800 sq ft of living space, built on the same lot as a main house. This version is a detached single-story unit with two bedrooms, one bath, an open kitchen and living area, and a laundry closet.
What affects the lot fit and cost of building this ADU?
The 26'-11" × 32'-2" footprint must fit within your lot's setbacks, and utility connections, site slope and access for equipment also matter. Local ADU rules on height, separation and parking vary, so check them with your planning department before you finalize the plan.
Can I change this plan by chat?
Yes. You can ask for changes such as different room sizes, a swapped porch location or a narrower or wider footprint to suit your lot width. The layout is then redrawn so the rooms still connect.
How do I use the PDF, DXF and IFC files?
The PDF is for reviewing and printing the drawings. The DXF opens in CAD software for editing or site layout, and the IFC imports into BIM tools. Your builder or designer can use them as a starting point, and local permit review may require stamped drawings.