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ADUs & JADUs
Accessory Dwelling Unit Regulations
Accessory Dwelling Unit Calculator
The ADU Calculator is a resource to help estimate the costs, returns, and benefits associated with building an ADU
ADU Rescue Program
Learn more on how you may qualify and apply for an ADU or JADU enforcement violation extension.
Napa Sonoma ADU Center
The Napa Sonoma ADU Center provides resources for homeowners in Napa and Sonoma counties who want to build an ADU.
Sonoma County Housing Authority
State ADU Law
California Department of Housing and Community Development's web site describing state laws and regulations about Accessory Dwelling Units.
View State Web Site