Noise Rules: El Cerrito vs Walnut Creek

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.

Are there special noise rules for Airbnbs in Walnut Creek?

No. Walnut Creek does not authorize short-term rentals, so no STR-specific noise regime exists. The citywide nuisance rules in Municipal Code Chapter 4-6 and the 8 AM-7 PM weekday equipment window apply to every residence.

How do I report a loud short-term rental in Walnut Creek?

Call WCPD non-emergency at (925) 943-5844 for the noise itself, and email DutyPlanner@walnut-creek.org or call Planning at (925) 256-3558 to report the underlying unpermitted rental use.

Can my STR permit be revoked for noise?

Walnut Creek does not issue STR permits. Any rental shorter than 31 days is treated as an unpermitted use regardless of guest behavior.