ADU Resources

Accessory Dwelling Units are additional structures located on a single-family lot.  They can be attached or detached, and each city has specific regulations governing how they are built.  

General resources to get started:

Casita Coalition

Napa Sonoma ADU – general content useful to all


ADU Developers

Click HERE to see a list of builders who completed an ADU and passed inspection in Los Altos as of September 2021.

This list was pulled from city records.  If you’d like to be added, please contact us.