Community Development Agency
GENERAL PLAN, SPECIFIC PLANS, AND ORDINANCES
- ZONING
- CODE ENFORCEMENT
- RESIDENTIAL DESIGN GUIDELINES AND STANDARDS
- LAND USE PLANNING FORMS
- BOARDS AND COMMISSIONS
- MEETINGS
- PENDING LAND USE PROJECTS
- CEQA PROJECTS
- SURFACE MINE PERMITS
- CLIMATE CHANGE AND SUSTAINABILITY
- WASTE PROGRAM
- ALTAMONT OPEN SPACE
- QUICK LINKS
- ARCHIVE
Accessory Dwelling Units
Project Description
Accessory Dwelling Units (ADUs), also known as in-law units and casitas, are fully independent living quarters, created on properties which allow residential land use and are developed, or proposed for development, with a primary residence. ADUs are clearly accessory to a primary single-family or multi-family residence and are subordinate to it in size, location, and appearance. They may be created through new construction or through converting existing permitted interior space, or a carport, into an ADU. ADUs add to the local rental housing stock, can make home rental and ownership more affordable, allow opportunities for aging in place and may reduce greenhouse gas emissions when constructed in areas near public transit and services.
ADU Technical Assistance Program
The County of Alameda has a new ADU Technical Assistance program (HelloADU) that can help homeowners through every step of the ADU process. To learn more about the program and how to apply, please visit www.HelloADU.org. You can also email HelloADU@hellohousing.org with any questions that you may have.
Links & Resources
- Accessory Dwelling Unit and Junior Accessory Dwelling Unit Ordinance
- Alameda County ADU Process Graphic and Handout (PDF - 458kb)*
- California Government Code Section 66134 - 66332
- Previous Alameda County ADU regulations (PDF - 246kb)*
- California Department of Housing and Community Development
- JADU Deed Restriction Form
Contact for general ADU information:
Permit Center / Zoning Counter
399 Elmhurst Street, Suite 141
Hayward, CA 94544
Phone 510.670.5400
Contact for ADU regulations update status information:
Rodrigo Orduña
Alameda County Planning Department
224 West Winton Avenue, Suite 111
Hayward, CA 94544
Phone: (510) 670-5400