Alpine County, CA Short-Term Rentals: Noise Rules (2026)

Noise is one of Alpine County's central short-term rental concerns. Section 18.73.070(B) of the County Code prohibits any activity at any time that produces sounds exceeding the standards stated in Section 18.68.090(B) of the noise chapter, with exceptions for the sources and activities listed in Section 18.68.090(F). The required interior guest notice under Section 18.73.070(J)(5) instructs occupants and guests not to create unreasonable noise or disturbances, engage in disorderly conduct, or violate any provision of the county code or state law on noise, and specifically directs that voices shall be kept to average conversation levels and shall not produce noise such that neighboring properties are disturbed between the hours of nine p.m. and seven a.m. The County backs this up with an escalating enforcement tool: under Section 18.73.070(B)(1), a property that receives three or more noise complaints within a 12-month period must install a noise monitoring system approved by the Community Development Director and make that system's data available to the County on request. Noise is also one of the three nuisance categories (with trash and parking) that the designated 24/7 emergency contact must abate within one hour of notification under Section 18.73.070(N). Occupants themselves may be cited and fined for noise violations under Section 18.73.070(J)(6).