ADU and Guest House Plans
ADU and guest house plans are small, complete homes for a backyard or a second lot: a bedroom or two, a bath, a kitchen and laundry. Check your city's ADU size limit before choosing one.
This collection has 43 plans from 310 to 1,386 sq ft of living space, 6 with an attached garage and 4 on two stories. Every plan is a real measured drawing: walls, doors and windows are placed, room sizes add up to the total, and you can download the PDF plan set, a DXF for AutoCAD and an IFC model at no cost. To change one, open it in Plan Chat and describe the change; the rest of the house stays as it is.
43 plans
571 sq ft · 1 bd · 1 ba · 1 story · garage
704 sq ft · 1 bd · 1 ba · 1 story · garage
900 sq ft · 1 bd · 1 ba · 2 stories · garage
1,085 sq ft · 2 bd · 1 ba · 2 stories · garage
1,386 sq ft · 2 bd · 2 ba · 2 stories · garage
Frequently asked questions
How big are these ADU and guest house plans?
The plans in this collection range from 310 to 1,386 sq ft of living space (garage, porches and patios not included). The median is 642 sq ft. Each plan page lists every room with its inside dimensions.
Are the dimensions real?
Yes. Each plan is a measured model, not a picture: the room table is computed from the walls, and the same model produces the PDF, DXF, IFC and 3D files. They are concept plans, so a local designer or engineer still has to adapt them to your site and code before you build.
Can I change one of these ADU and guest house plans?
Open the plan in Plan Chat and describe what you want, for example "add a home office", "move the garage to the left" or "fit a 45 ft wide lot". Plan Chat changes only what you ask for and keeps every version. Changes use credits from a paid plan.
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