Alameda, CA Accessory Structures: ADU Rental Restrictions (2026)
Key Facts
- Minimum rental term
- Longer than 30 days
- Separate sale
- Prohibited except under Gov. Code Sec. 65852.26
- Applies to
- All ADUs under AMC Sec. 30-5.18
- Short-term rentals
- Effectively barred for the accessory unit
Summary
Alameda bars selling or conveying an accessory dwelling unit apart from the primary home, except as state law allows, and requires any ADU rental to run longer than 30 days, ruling out short-term and vacation rentals of the unit.
e.Rental and Sale Limitations. The accessory dwelling unit shall not be sold or otherwise conveyed separately from the primary dwelling except as allowed pursuant to Government Code Section 65852.26, and rental of an accessory dwelling unit shall be for a period longer than thirty (30) days.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 74).
Full Breakdown
18(e), titled Rental and Sale Limitations, sets two separate restrictions on how an accessory dwelling unit can be used once built. 26 allows a separate conveyance under the state's more recent ADU ownership provisions. Second, any rental of the accessory dwelling unit must be for a period longer than 30 days, which functions as a direct ban on nightly or weekly short-term rentals of an ADU through platforms like Airbnb or VRBO. The 30-day threshold matches the same minimum used elsewhere in the ordinance for junior accessory dwelling units under subsection (c)(6)(h)(1), keeping the rental rule consistent across both ADU types on a property.
18, regardless of whether it is attached, detached, or created from a converted garage. The rule does not restrict rental of the primary dwelling itself, only the accessory unit, and it does not set a maximum on how long the tenancy can run, only a floor of more than 30 days.
Violations & Fines
Renting an ADU for 30 days or less, or selling it apart from the primary dwelling outside the Government Code Section 65852.26 pathway, is a violation of Alameda Municipal Code Section 1-5.1(b), a misdemeanor punishable by up to a $1,000 fine, up to six months in jail, or both. Each day the unit is advertised or rented short-term is treated as a separate continuing violation under Section 1-5.1(e), and code enforcement can act on a neighbor complaint or a short-term rental platform listing.
Frequently Asked Questions
Can I list my Alameda ADU on Airbnb for weekend stays?
Can I sell my ADU separately from my house in Alameda?
Does the 30-day rental rule apply to the main house too?
Sources & Official References
Other rules in Alameda
California rules heatmap·Compare Alameda to another location·View the California accessory structures overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.
ADU Rental Restrictions in Nearby Cities
How other cities in Alameda County handle adu rental restrictions.