Grass Valley, CA Short-Term Rentals: Noise Rules (2026)

Communities with formal short-term rental ordinances often attach mandatory quiet hours (for example, 10 p.m. to 7 a.m.) and noise-complaint response requirements directly to the STR permit. Unincorporated Nevada County does not have a dedicated STR ordinance, so there are no STR-specific quiet hours imposed as a permit condition. Instead, noise generated by short-term rental guests is addressed through the County's generally applicable noise and nuisance rules, which apply equally to all residences in the unincorporated area. Operators remain responsible for ensuring that guests do not create excessive noise, late-night disturbances, or other nuisances that affect neighbors. Because the County relies on its general nuisance framework rather than STR-specific enforcement, repeated noise complaints are typically handled through code enforcement and law-enforcement nuisance response rather than through suspension of an STR permit (which does not exist in the unincorporated county). It is good practice for operators to provide guests with clear house rules covering noise, outdoor amplified music, and consideration for neighbors, and to post emergency and operator contact information. Note that the Town of Truckee and the cities within Nevada County do attach specific quiet-hour conditions to their STR permits; references to a 10 p.m. quiet hour generally describe those city or town programs, not a county STR ordinance for unincorporated areas.