
Build small and make a big difference
THERE’S NEVER BEEN A BETTER TIME TO BUILD AN ACCESSORY DWELLING UNIT (ADU) IN SANTA CLARA COUNTY.
Quicklinks
RESOURCES FOR EVERY STEP OF THE WAY

SUPPORTING ALL OF SANTA CLARA COUNTY
What is Santa Clara ADU?
Santa Clara ADU is a collaborative effort of all Santa Clara cities and Santa Clara County, led by the Santa Clara County Planning Collaborative in partnership with the Cities Association of Santa Clara County. These resources support all residents of Santa Clara County through the process of building an Accessory Dwelling Unit (ADU).
Key Resources
ADU Guidebook
ADU Guidebook
ADU Calculator
ADU Calculator
ADU Process At-A-Glance
ADU Process At-A-Glance
Plans Gallery
Coming Soon!
Plans Gallery
Coming Soon
ADU Glossary
ADU Glossary
Local ADU Rules
Local ADU Rules
ADU Guidebook
ADU Guidebook
ADU Calculator
ADU Calculator
ADU Process At-A-Glance
ADU Process At-A-Glance
Plans Gallery
Coming Soon
Plans Gallery
Coming Soon
ADU Glossary
ADU Glossary
Local ADU Rules
Local ADU Rules

ADUs benefit
the community.
loved ones.
your property.
the next generation.
the environment.
Santa Clara County.

Real ADU Stories
Get to know ADUs by reading stories about what your neighbors are building.