Noise Rules: Antioch vs El Cerrito

What noise rules apply to Airbnb guests in Antioch?

The city's standard noise ordinance applies. Guests should keep noise down especially between 10 PM and 7 AM.

Am I liable if my Airbnb guests are loud?

Yes, property owners can face nuisance enforcement for repeated disturbances from their rental property.

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.