ADU Rental Restrictions: Castro Valley vs Fremont
How do adu rental restrictions rules compare between Castro Valley, CA and Fremont, CA?
Castro Valley, CA
Alameda County
No data available yet for Castro Valley.
Fremont, CA
Alameda County
Fremont prohibits short-term rentals (under 30 days) of any ADU under California Government Code 65852.2(a)(6) and FMC 18.190.005. Long-term rentals (30+ days) of an ADU are allowed but are subject to AB 1482 (Cal. Civ. Code 1946.2) just-cause eviction and statewide rent caps. Fremont does not have a local rent-control ordinance.
View full Fremont rules →Key Facts Comparison
| Fact | Castro Valley | Fremont |
|---|---|---|
| Min Rental Term | - | 30 days (Gov. Code 65852.2(a)(6)) |
| ADU as STR | - | Prohibited (not primary residence) |
| AB 1482 Cap | - | 5% + CPI / max 10% |
| Local Rent Control | - | None in Fremont |
| Just-Cause Eviction | - | Required after 12 months (AB 1482) |
Highlighted rows indicate differences between cities.
Castro Valley FAQ
No FAQs available.
Fremont FAQ
Can I list my Fremont ADU on Airbnb?
No. California Government Code 65852.2(a)(6) and FMC 18.190.005 require every ADU permit to carry a deed restriction prohibiting rentals shorter than 30 days. FMC Chapter 5.100 (Short-Term Rentals) does not authorize ADUs as STRs because they are not the host's primary residence.
Is my Fremont ADU subject to rent control?
Fremont has no local rent-control ordinance, so there is no city rent ceiling. California AB 1482 (Civil Code 1947.12) caps annual rent increases statewide at 5% plus CPI (maximum 10%) on units more than 15 years old. New ADUs are exempt from the cap until they reach 15 years from the initial Certificate of Occupancy.
Compare other topics
See how Castro Valley and Fremont compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool