Pre-Approved Plans
Find your dream ADU design
Save time and money by choosing an existing set of plans and connecting directly with the architect, designer, or company. Plus, some locations have already reviewed plans for building code compliance, saving you even more time in the permitting process!
PLEASE NOTE: All existing ADU designs – even pre-approved plans – require planning for your property and other permit applications. You most likely need to hire a professional to complete this work. Not all designs work on all properties, so ask a professional before purchasing or using a design.
Visit your local ADU Plans Gallery (if available)
Many Santa Clara County locations are launching online galleries listing their pre-approved designs. Click on the logos below for currently launched galleries or use this statewide gallery search page.
Ask local staff
As of January 1, 2025, all local governments in California are required to accept ADU plans for pre-approval and keep a list of locally pre-approved plans online so homeowners can get in touch with the designers to purchase or use the plans.
Use our Local Rules & Contact page to find contact information for your local staff and ask about locally pre-approved plans.
The City of San Jose offers a selection of pre-approved ADU plans for faster, lower-cost permitting. You will need to contract with a pre-approved vendor and prepare a property-specific site. Learn more here.
The City of Cupertino also offers pre-approved plans for detached ADUs to speed up permitting. You will need to contract with one of the approved vendors and final approval is still subject to site concerns. View available plans here.