Oakland ADU permits and regulations 2021
More than 400 ADUs (accessory dwelling units) were permitted in Oakland, California, back in 2018—even before favorable laws were enacted. While that sounds promising, the city as of 2021 has a reputation for being somewhat difficult when it comes to building ADUs.
The Center for Community Innovation at UC Berkeley gives Oakland’s ADU program a grade of B+ on its ADU California website. The resources below will also help you in evaluating whether building an ADU in Oakland is the right choice for you.
Free webinar: Building an ADU in California
Oakland ADU resources

California building code
Learn about statewide ADU regulations that apply to Oakland.

Oakland ADU regulations chart
This handy downloadable chart shows maximum sizes, heights, setbacks, and more by ADU type.

Rental rate trends in Oakland
The average rent for a one-bedroom apartment in Oakland is $1,975 a month as of May 2021. Two-bedroom apartments rent for $2,500 a month on average.

Oakland ADU application—single-family
Submit this form to the Planning and Building Department if your ADU will be built in conjunction with a single-family dwelling.

City of Oakland ADU Info
This page on the city’s website provides links to state and local building codes, ADU permit applications, contact info, and more.

ADU financing options
See traditional and alternative ways to pay for your ADU. While Villa is not a lender, we can connect you with a lender who specializes in ADU financing.
Oakland ADU laws: Fast facts
(Compiled in June 2021)

Maximum ADU size
For a detached unit on a property with a single-family dwelling: 850 square feet for a studio or one-bedroom unit, or 1,000 square feet for a unit with more than one bedroom.

Front setback
Varies by the lot’s base zone, which you can check on the City of Oakland zoning map.

Maximum number allowed
Lots with a single-family dwelling as the primary residence can have one junior ADU and one detached ADU.

Side and rear setbacks
Both are 4 feet.
Additional setback requirements may apply per building and fire codes, or as a result of no-build easements; compliance with existing easement restrictions may also be required.
ADU news and events
Stay up to date on all things ADU.
Webinar: Building an Accessory Dwelling Unit in California
Hear about the new state laws, our process, and the advantages of building with Villa.