Step 1 of 4
Where is your property?
ADU rules vary significantly by state. Select yours to get accurate requirements.
🌴
California
Most ADU-friendly
☀️
Florida
SB-48 expanding rules
🌲
Washington
HB 1337 expanded
🏔️
Colorado
New 2025 mandate
🗽
New York
New ADU rules 2025
🌧️
Oregon
Progressive ADU laws
🍑
Georgia
Atlanta-led growth
🌵
Arizona
ADU-friendly laws
🗺️
Other State
All 50 states covered
Step 2 of 4
Tell us about your lot
These numbers determine what size ADU your property can support.
Step 3 of 4
What type of ADU?
Each type has different cost, timeline, and site requirements.
🏡
Detached ADU
New backyard structure
🏠
Attached ADU
Addition to main home
🚗
Garage Conversion
Convert existing garage
🏗️
Basement / Interior
Convert existing space
Intended use
Long-term rental
Family / in-law suite
Short-term (Airbnb)
Home office
Increase property value
Step 4 of 4 — Almost there
A few more details
This helps us flag any extra hurdles specific to your situation.
Which apply to your property?
Historic district
Steep / sloped lot
Septic system
Lot under 5,000 sq ft
None of the above
Do you have a garage?
Yes – attached
Yes – detached
No garage
