ADU Owner Occupancy: Berkeley vs Hayward
How do adu owner occupancy rules compare between Berkeley, CA and Hayward, CA?
Berkeley has fewer restrictions than Hayward.
Berkeley, CA
Alameda County
Under BMC 23.304 and California Government Code 65852.2(a)(8), Berkeley does NOT require owner-occupancy for standard ADUs permitted between January 1, 2020 and December 31, 2024. Owner-occupancy is required only for Junior ADUs (JADUs) under Gov. Code 65852.22, with a recorded deed restriction.
View full Berkeley rules →Hayward, CA
Alameda County
Hayward does not impose an owner-occupancy requirement on detached or attached ADUs under HMC 10-1.2740 and California Government Code 65852.2(a)(6). Owner-occupancy is still required when a JADU is on the property, per Government Code 65852.22(a)(2). The owner must occupy either the main dwelling or the JADU.
View full Hayward rules →Key Facts Comparison
| Fact | Berkeley | Hayward |
|---|---|---|
| Standard ADU | No owner-occupancy required | - |
| JADU Rule | Owner must live in primary OR JADU | - |
| State Authority | Gov. Code 65852.2(a)(8); 65852.22 | - |
| JADU Deed Restriction | Recorded with Alameda County | - |
| Occupancy Limit | Same as single-family home | - |
| Stand-Alone ADU | - | No owner-occupancy required |
| JADU | - | Owner-occupancy required (recorded deed) |
| Authority | - | Gov. Code 65852.2(a)(6), 65852.22(a)(2) |
| Deed Restriction | - | Recorded at permit for JADUs |
| Enforcement | - | HMC 1-7 administrative citations |
Highlighted rows indicate differences between cities.
Berkeley FAQ
Does Berkeley require me to live on-site if I build an ADU?
No, not for a standard ADU. California Government Code 65852.2(a)(8) preempts owner-occupancy rules, and BMC 23.304 has not adopted such a requirement. The only exception is a Junior ADU - the owner must occupy either the primary house or the JADU under Gov. Code 65852.22.
Can I rent out both my Berkeley house and my ADU?
Yes for a standard ADU - state law allows renting both units as long as each is rented for 30 days or longer. Berkeley's rent-control ordinance (BMC 13.76) applies to all rental units in the city. For a JADU, the deed restriction requires you to live in either the primary house or the JADU.
Do I have to record a deed restriction for my Berkeley ADU?
Only for a JADU under Government Code 65852.22 and BMC 23.304. The deed restriction (owner occupancy, no short-term rental, no separate sale) must be recorded with the Alameda County Recorder before the Certificate of Occupancy issues. Standard ADUs only have a deed restriction against short-term rental.
Hayward FAQ
Do I have to live on-site to rent out a Hayward ADU?
No, not for a stand-alone ADU. California Government Code 65852.2(a)(6) and HMC 10-1.2740 prohibit Hayward from requiring owner-occupancy for ADUs permitted through January 1, 2025 and indefinitely thereafter. JADUs are different - the owner must occupy either the main house or the JADU under Gov. Code 65852.22(a)(2).
What is the JADU owner-occupancy deed restriction in Hayward?
Under California Government Code 65852.22(a)(2), every JADU permitted in Hayward triggers a deed restriction recorded with Alameda County. The restriction requires the property owner to live in either the main residence or the JADU, prohibits separate sale, and runs with the land.
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