1 bedroom ADU floor plans
A 1 bedroom ADU fits from about 400 sq ft, but 500 to 750 sq ft gives a real bedroom with a closet, a full bath and an open kitchen and living room. Here are three measured layouts you can open, change and download as CAD files.
600 sq ft 1 bedroom
| Kitchen | 15'-2" x 8' |
|---|---|
| Bath | 6' x 8' |
| Laundry closet | 5' x 8' |
| Living | 16'-8" x 14'-11" |
| Bedroom | 9'-6" x 14'-11" |
$240K to $321K estimated build cost in Sacramento. Add your ZIP in the editor for your area.
More floor plans to start from
500 sq ft 1 bedroom
$213K to $286K estimated build cost in Sacramento. Add your ZIP in the editor for your area.
750 sq ft 1 bedroom
$279K to $375K estimated build cost in Sacramento. Add your ZIP in the editor for your area.
What fits in a 1 bedroom ADU
At 500 sq ft: a bedroom of about 9.5 by 13 ft, a full bath, a laundry closet and a kitchen run beside the living room. At 600: the bedroom and living room grow to about 15 ft deep and the kitchen to 15 ft long. At 750: a living room of about 24 by 15 ft.
Every bedroom here has an egress window, and the bath and kitchen keep usable widths, so the plan is a sound starting point for a designer.
Will it fit your lot?
For homes in the California areas we cover, the free lot check reads your parcel, setbacks and local rules and shows the biggest unit that fits.
Check your lotQuestions
How big is a 1 bedroom ADU?
Most are 500 to 750 sq ft. Under about 450 sq ft the bedroom gets tight; over 800 the cost climbs faster than the comfort.
How much does a 1 bedroom ADU cost?
In Sacramento these layouts estimate about $213K to $375K to build, from 500 to 750 sq ft. Open one in the editor and add your ZIP for your area; a builder's bid is the real number.
Can I get the 1 bedroom plan as a CAD file?
Yes. The DXF download has the walls, doors, windows and room sizes in inches, so a designer can start from it.
Last checked 2026-11-02. Costs are estimates priced at ZIP 95818, not bids. Floor plans are concept layouts; a licensed designer or architect prepares the plans your city approves.