Short-term rentals in Santa Clara County must follow the noise ordinance: 45 dBA nighttime (10pm-7am), 55 dBA daytime at property lines. Excessive guest noise is enforced as a nuisance.
Santa Clara County noise regulations apply to short-term rental properties the same as any other residence. The county noise ordinance sets general nighttime quiet hours from 10 pm to 7 am, during which sound levels received at neighboring properties must not exceed 45 dBA (residential nighttime standard). Daytime limits are typically 55 dBA at a residential property line. Amplified music, parties, shouting, and vehicle noise from STR guests are all enforceable under the nuisance provisions. Hosts are expected to provide house rules describing quiet hours, occupancy limits, and neighbor contact information. Chronic nuisance properties can face escalating enforcement, permit revocation in cities that issue STR permits, and nuisance abatement actions. The Sheriff's Office responds to active noise complaints in unincorporated areas; city police handle calls within incorporated jurisdictions.
Noise violations may be cited under the county code as infractions with fines starting at 100 dollars and escalating to 500 dollars or more for repeat offenses. Chronic STR nuisance properties may face permit revocation and civil nuisance abatement.
Santa Clara County, CA
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