Explore ADU legislation across 14 states. Each state has different rules governing where and how you can build an ADU.
Click on a state to see detailed ADU laws and city-by-city comparisons.
3 cities covered. Average ADU-friendliness score: 5.3/10.
View Arizona ADU laws →10 cities covered. Average ADU-friendliness score: 8.0/10.
View California ADU laws →3 cities covered. Average ADU-friendliness score: 7.7/10.
View Colorado ADU laws →4 cities covered. Average ADU-friendliness score: 5.2/10.
View Florida ADU laws →2 cities covered. Average ADU-friendliness score: 5.5/10.
View Georgia ADU laws →2 cities covered. Average ADU-friendliness score: 6.5/10.
View Illinois ADU laws →3 cities covered. Average ADU-friendliness score: 6.3/10.
View Massachusetts ADU laws →2 cities covered. Average ADU-friendliness score: 7.5/10.
View Minnesota ADU laws →3 cities covered. Average ADU-friendliness score: 5.7/10.
View New York ADU laws →3 cities covered. Average ADU-friendliness score: 6.0/10.
View North Carolina ADU laws →4 cities covered. Average ADU-friendliness score: 7.8/10.
View Oregon ADU laws →5 cities covered. Average ADU-friendliness score: 6.2/10.
View Texas ADU laws →2 cities covered. Average ADU-friendliness score: 6.5/10.
View Virginia ADU laws →4 cities covered. Average ADU-friendliness score: 7.5/10.
View Washington ADU laws →We're expanding coverage to all 50 states. Request a state to help us prioritize.