Night Caps: Berkeley vs Castro Valley
How do night caps rules compare between Berkeley, CA and Castro Valley, CA?
Castro Valley has fewer restrictions than Berkeley.
Berkeley, CA
Alameda County
Berkeley limits un-hosted short-term rentals to 90 nights per calendar year. Hosted stays (where the host remains on-site) have no annual cap.
View full Berkeley rules →Castro Valley, CA
Alameda County
Unincorporated Alameda County does not currently impose a countywide annual night cap on short-term rentals, but individual cities and future county programs may limit un-hosted rentals to a set number of nights.
View full Castro Valley rules →Key Facts Comparison
| Fact | Berkeley | Castro Valley |
|---|---|---|
| Un-hosted Cap | 90 nights per calendar year | - |
| Hosted | No annual cap | - |
| Reset | January 1 each year | - |
| Violation Fine | Up to 1,000 dollars per day | - |
| Platform Data | Shared with Berkeley for enforcement | - |
| Countywide cap | - | None currently in unincorporated area |
| City-level caps | - | Some cities (e.g., Oakland, Berkeley) apply |
| Typical un-hosted cap | - | 60 to 180 nights per year |
| Hosted rentals | - | Often uncapped where regulated |
| Watch for | - | Future county STR ordinance |
Highlighted rows indicate differences between cities.
Berkeley FAQ
What counts as hosted vs un-hosted?
Hosted means the host is physically present in the dwelling during the guest stay. Un-hosted means the guest has the home to themselves.
How does Berkeley track the 90-night cap?
Hosts self-report, and platforms share booking data with the city under data-sharing agreements.
Castro Valley FAQ
Is there a limit right now in unincorporated Alameda County?
No countywide numeric cap exists; regulations may change, so check with the Community Development Agency before heavy hosting.
How is hosted versus un-hosted defined?
Hosted typically means the primary resident remains on-site during guest stays; un-hosted means the whole home is rented without the resident present.
Compare other topics
See how Berkeley and Castro Valley compare on other ordinance categories.
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