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ADUs In Oakland
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Oakland offers pre-approved studio, one-bedroom, and two-bedroom ADU plans, and says an application has two main steps: zoning approval and a building permit. HCD review letters from July 2023 and December 2025 raised concerns about ADU limits in the S-9 Fire Safety Zone, so check the current rules for your address.
The Local Program
Oakland's ADU page says an application has two main steps, zoning approval and a building permit. The city also offers pre-approved studio, one-bedroom, and two-bedroom plans, which it says still need a separate permit application for each site. In a July 5, 2023 review letter, HCD found parts of Oakland's ADU ordinance out of compliance, including limits in the S-9 Fire Safety Zone. A December 10, 2025 HCD letter on the city's newer ordinance says the S-9 zone restrictions on ADUs are unchanged and that HCD is concerned there have been no changes. Check the current rules for your address.
Converting a garage? See Garage Conversions In Oakland.
What Costs Look Like In The Region
The Terner Center's Terner Center statewide ADU owner survey found the Bay Area had the highest regional median: $177,500, or $329 per square foot. That survey was published in 2021, so current prices may be higher. See ADU Cost In California for the full table and the caveats.
What To Check At Your Address
- Find out whether your lot is in a fire safety or hillside zone before you pay for design.
- Ask if the pre-approved detached plans fit your lot and what site review still applies.
- Read the city page on category one and category two ADUs to learn which process applies to your project.
State Rules That Apply Here
- The review deadlines in Permits And Timeline: 15 business days for a completeness notice and 60 days to approve or deny a complete application.
- No impact fees for an ADU of 750 square feet or less (Government Code section 66311.5).
- No owner occupancy requirement for an ADU (Government Code section 66315).
Before You Hire Anyone
Call or visit the planning counter, and bring your address and a sketch of what you have in mind. Then read Questions To Ask An ADU Builder.
Common Questions
Does Oakland have pre-approved ADU plans?
Yes. The city offers pre-approved studio, one-bedroom, and two-bedroom plans, which it says still need a separate permit application for each site.
Are ADUs restricted in Oakland fire zones?
HCD wrote in a December 10, 2025 letter that the S-9 zone restrictions on ADUs are unchanged and that HCD is concerned there have been no changes. Confirm current rules with the city before paying for design.
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