Noise Rules: El Cerrito vs San Ramon
How do noise rules rules compare between El Cerrito, CA and San Ramon, CA?
El Cerrito and San Ramon have similar restriction levels.
El Cerrito, CA
Contra Costa County
Unincorporated Contra Costa County regulates short-term rentals under Chapter 88-32 of the County Ordinance Code (added by Ordinance 2020-12). The STR operating standards prohibit excessive noise inconsistent with residential use. The ordinance does not set a specific decibel limit or fixed quiet-hour window; instead it pairs that standard with a hard 20-person gathering cap and a ban on weddings, conferences, and other commercial special events.
View full El Cerrito rules →San Ramon, CA
Contra Costa County
San Ramon allows STRs in any residential district subject to Zoning Ordinance D4-27, which makes the operator jointly responsible for compliance with all City noise regulations under Municipal Code Chapter V (B6-81 through B6-122). General nighttime quiet hours run 10 PM to 8 AM, and audio or yelling that is plainly audible at 50 feet from the building between those hours is prima facie evidence of a violation. Un-hosted STRs are capped at 12 weeks per year, and STRs may not be rented for parties or other special events.
View full San Ramon rules →Key Facts Comparison
| Fact | El Cerrito | San Ramon |
|---|---|---|
| Authority | Ord. Code Ch. 88-32 (Ord. 2020-12) | - |
| Noise Standard | No excessive noise inconsistent with residential use | - |
| Decibel Limit | None set | - |
| Quiet Hours | Not specified | 10 PM - 8 AM |
| Gathering Cap | 20 persons total | - |
| Special Events | Prohibited (weddings, conferences) | Prohibited (no parties/weddings) |
| State Fallback | Cal. Penal Code 415 | - |
| STR Status | - | Allowed with annual registration |
| STR Code Section | - | Zoning Ordinance D4-27 |
| Noise Code | - | Municipal Code Ch. V (B6-81 to B6-122) |
| Audible Standard | - | Plainly audible at 50 ft (prima facie) |
| Local Contact Response | - | 30 minutes, 24/7 (D4-27.C.2.d) |
| Un-hosted Cap | - | 12 weeks per year |
Highlighted rows indicate differences between cities.
El Cerrito FAQ
Are there fixed quiet hours for short-term rentals in unincorporated Contra Costa County?
No. Chapter 88-32 does not set a numerical decibel limit or a county-wide quiet-hours window. The operating standard is that excessive noise inconsistent with residential use is prohibited. The county also caps gatherings at 20 persons and bars weddings, conferences, and other commercial events at STRs.
Who responds to a noisy short-term rental complaint in unincorporated Contra Costa County?
The Contra Costa County Sheriff's Office responds to active disturbances and can cite under California Penal Code 415 (disturbing the peace). The local responsible party listed on the STR permit must also respond. Repeat complaints are forwarded to the Department of Conservation and Development for STR permit action under Chapter 88-32.
Do these rules apply inside cities like Walnut Creek or Concord?
No. Chapter 88-32 only applies in the unincorporated county. Cities like Walnut Creek, Concord, Richmond, Antioch, Pittsburg, San Ramon, and Danville set their own STR and noise ordinances, and many of those cities publish numeric quiet hours and decibel limits.
San Ramon FAQ
Does San Ramon set special noise limits for short-term rentals?
No. San Ramon does not impose STR-specific decibel limits. D4-27.D.6 makes operators jointly responsible for compliance with the citywide noise rules in Municipal Code Chapter V, including the 10 PM to 8 AM quiet hours.
How are noise complaints handled at a San Ramon STR?
Under D4-27.C.2.d, the registered local contact must be available 24 hours a day and able to respond physically to the rental within 30 minutes. Audio plainly audible at 50 feet between 10 PM and 8 AM is prima facie evidence of a B6-91 violation.
Can my San Ramon STR registration be revoked for noise problems?
Yes. Under D4-27.G, the Zoning Administrator may schedule a public hearing to revoke a registration for violations or public nuisance, and a revoked registration may not be re-issued for 12 months.
Are short-term rentals allowed for parties or weddings in San Ramon?
No. D4-27.D.2 expressly prohibits renting an STR for the purpose of holding special events such as weddings, conferences, or parties.
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