Accessory Dwelling Unit

Applying for an Accessory Dwelling Unit

To apply for an Accessory Dwelling Unit (ADU) and/or Junior Accessory Dwelling Unit (JADU) please contact Alyssa Chung, Assistant Planner.

The Planning Application is available here.

ADU/JADU Regulations

Fees

The Planning fee for an Accessory Dwelling Unit is currently $528.00 (see page 8 of the Master Fee Schedule). Building permit fees are based on project valuation but ADUs are not subject to Development Impact Fees.

Resources

• Alameda County ADU Resource Center
• Alameda Count ADU Calculator
• CA Department of Housing and Community Development's (HCD) ADU Website
• CA Department of Housing and Community Development's (HCD) 2025 ADU Handbook
• CA Department of Housing and Community Development's (HCD) 2025 ADU Handbook Webinar