Accessory Dwelling Units (ADUs)

Photos of ADUs

Accessory dwelling units (ADUs), also known as “secondary dwelling units” or “in-law apartments,” are attached or detached units that are subordinate to a primary dwelling on the same lot. ADUs include separate, independent, and permanent facilities for living, sleeping, eating, cooking, and sanitation. ADUs are allowed on both single-family and multi-family properties, subject to City regulations.

The City also allows Junior ADUs (JADUs), which are smaller units converted out of existing space in a home that have an efficiency kitchen but may share bathroom facilities with the main home.

Adding an ADU or JADU is a substantial construction project, but new state laws have recently made it easier. If you are a homeowner who is considering adding an ADU to your property, it is important that you speak with City staff early in the process to understand the regulations and constraints.

Take a look at the process to add an ADU to a property in Fremont:

Path to a Completed ADU

Path to a Completed ADU

ADU Resources

ADU Handout...Start Here!

Permitting Resources

Financial Resources

ADU Customer Experience Survey

Customer Experience SurveyADU Customer Experience Survey Opens in new window

Have suggestions for how the City can make it easier for residents to add an ADU? Complete the City's ADU Customer Experience Survey to provide feedback.