2-Story ADU Plans for California
Two-story ADUs are the right choice when your lot is narrow or you want to preserve outdoor space. Going vertical doubles your livable area without doubling the footprint. Each design includes shear-wall layout, holdown details, and second-floor framing sized for California seismic loads.
Showing 7 plans from the ADU plan catalog.

A21-1017
1,017 sqft•1 bed / 1.5 bath•2 storiesFrom $250
A21-821
821 sqft•1 bed / 1.5 bath•2 storiesFrom $250
A21-890
890 sqft•1 bed / 1.5 bath•2 storiesFrom $250
A22-1084
1,084 sqft•2 bed / 1.5 bath•2 storiesFrom $250
A22-1158
1,158 sqft•2 bed / 1.5 bath•2 storiesFrom $250
A22-1199
1,199 sqft•2 bed / 2 bath•2 storiesFrom $250
A22-1200
1,200 sqft•2 bed / 2 bath•2 storiesFrom $250