ADU Code by Town

Accessory Dwelling Unit code varies by town, as do the development standards that dictate how much of your lot can be covered by structures, how close the structures can be to the property line, and how tall they can be. All of this information is available on your town’s website, but it can be difficult to find. We’ve provided links to summaries, some of which were published by the town, and others that were compiled by Lilypad. 

ADU code for Marin County jurisdictions

ADU code for Sonoma County jurisdictions 

ADU code for Napa County jurisdictions