1-Story ADU Plans for California
Single-story ADUs are the most popular configuration in California — they build faster, cost less per square foot, and work for occupants of any age. Every plan below ships with both slab-on-grade and crawl-space foundation alternates, ready for plan check in any California jurisdiction.
Showing 8 plans from the ADU plan catalog.
A11-862
862 sqft•1 bed / 1 bath•1 storyFrom $250
A11-866
866 sqft•1 bed / 1 bath•1 storyFrom $250
A11-869
869 sqft•1 bed / 1 bath•1 storyFrom $250
A12-1067
1,067 sqft•2 bed / 2 bath•1 storyFrom $250
A12-1084
1,084 sqft•2 bed / 2 bath•1 storyFrom $250
A12-1100
1,100 sqft•2 bed / 1.5 bath•1 storyFrom $250
A12-1133
1,133 sqft•2 bed / 1 bath•1 storyFrom $250
A12-1200
1,200 sqft•2 bed / 2.5 bath•1 storyFrom $250