ADU Guidebook

Project Lead: Marie Maniscalco, Associate Planner

Nevada County residents are invited to provide input on the draft accessory dwelling unit (ADU) guidebook being created specifically for Nevada County. 

ADUs (also known as “granny flats” or “in-law units”) come in a variety of shapes and sizes. They can range from prefabricated units to brand-new additions that are attached to or detached from the main home. They can range in size from a 150-square-foot studio to 1,200 square-foot unit with multiple bedrooms. 

To encourage ADUs throughout the region, the guidebook and associated tools are being developed through the Mother Lode ADU, a partnership between the Counties of Amador, Calaveras, Mariposa, and Nevada. This project is funded by the California Department of Housing and Community Development’s Regional Early Action Planning grant. 


What: Please review the guidebook and provide comments: DRAFT ADU Guidebook
When: Now through - September 18, 2023, at 5 p.m. 
How: Email your comments and input to

Mother Lode ADU Resources: 

Those interested in learning more about ADUs, should bookmark the website and stay tuned for more resources (guidebook, website, contractor list, and development checklist).

The new Mother Lode ADU website will walk people through all the steps needed to build an ADU, and includes a host of tools that will make the process easier.