Mono County, CA Noise Ordinances: Amplified Music & Events (2026)

Section 10.16.070(B)(1) (Music/Television) of the Mono County Code prohibits operating or playing any radio, television, musical instrument or similar device that reproduces or amplifies sound between 10:00 p.m. and 7:00 a.m. in a manner that creates a noise disturbance across a residential or commercial real property line, or that exceeds the levels set for public space measured at least 50 feet away on a public right-of-way. The only exception is activity for which the county has issued a variance. Section 10.16.070(B)(2) (Loudspeakers/Public Address Systems) separately bars using any loudspeaker, public address system or similar device between 10:00 p.m. and 7:00 a.m. when it creates a noise disturbance across a residential property line, unless a variance or use permit has been issued. A noise disturbance means a sound exceeding background by 10 dBA in the day or 5 dBA at night. Section 10.16.070(B)(13) adds that any loudspeaker or instrument in a place of public entertainment that exceeds 95 dBA at a point normally occupied by a customer requires a conspicuous hearing-impairment warning sign. These provisions apply in the unincorporated Eastern Sierra communities and not in the Town of Mammoth Lakes.