Monterey County, CA Noise Ordinances: Amplified Music & Outdoor Sound (2026)

Amplified music at parties and special events drives most noise complaints in unincorporated Monterey County, with North Monterey County identified as the hotspot in the County's 2022-23 Civil Grand Jury report. Under Sec. 040 of the County Code, amplified sound during the protected nighttime period is restricted as a 'loud and unreasonable sound,' is subject to the 'plainly audible' detection standard added in 2019, and may not exceed the Table 1 exterior standards of 45 Leq dBA (hourly equivalent) and 65 dBA maximum measured at the property line.

Separately, large gatherings that charge admission, serve food or alcohol, use amplified music, large tents, or stages require special-event permits coordinated through Housing and Community Development (HCD); the Grand Jury report describes amplified music as one of the permitted activities. There is a limited exemption in Sec. 040(C) for outdoor gatherings, dances, shows, and sporting/entertainment events conducted on commercial or institutional premises under applicable permits. Hosting an unpermitted event with amplified music can trigger both noise-ordinance citations and separate permit-violation enforcement, and repeat-offender properties (six to ten were known to the County) face escalating fines.