10 rules for unincorporated Glenn County, California.
Verified from official government sources
Unincorporated Glenn County has a nighttime quiet period for amplified sound. Under Glenn County Code Chapter 10.25 (Noise Control), adopted January 24, 2023, audio equipment may not disturb neighbors between 10:00 p.m. and 7:00 a.m., extended to 11:00 p.m. on Friday and Saturday. The zoning noise standard in Section 15.56.100 also lowers allowable dBA limits at night.
Unincorporated Glenn County does not impose a stand-alone construction-hours permit limit, but its zoning noise standard exempts construction-site noise only between 7:00 a.m. and 7:00 p.m. Under Glenn County Code Section 15.56.100, construction-site sounds outside those hours lose their exemption and must meet the general dBA noise limits.
Glenn County's 2023 audio-equipment noise ordinance (Chapter 10.25) does not specifically address barking dogs. The county's zoning noise standard (Section 15.56.100) and California law (Penal Code 415, Civil Code 3479 nuisance) provide the framework. Animal-noise complaints in unincorporated areas are generally handled as nuisances and through animal control under Title 8 of the Glenn County Code.
Unincorporated Glenn County has no leaf-blower-specific ban or noise limit. Its zoning noise standard, Glenn County Code Section 15.56.100, exempts lawn and plant-care machinery from the county's dBA limits when fitted with working sound-suppression equipment and operated between 7:00 a.m. and 8:00 p.m. Outside those hours such equipment must meet standard noise limits.
Unincorporated Glenn County directly regulates amplified music. Glenn County Code Section 10.25.020 (Ord. 1322, adopted Jan. 24, 2023) makes it unlawful, between 10:00 p.m. and 7:00 a.m. (11:00 p.m. Fri/Sat), to play audio equipment so as to disturb neighbors. Sound plainly audible 50 feet from the building or device is prima facie evidence of a violation.
Unincorporated Glenn County does not set its own aircraft-noise limits. Glenn County Code Section 15.56.100 expressly exempts 'aircraft when subject to federal or state regulations' from the county's noise standards. Aircraft noise is governed by the FAA and California Department of Transportation, Division of Aeronautics, not by the county code.
Industrial and commercial noise in unincorporated Glenn County is capped by Glenn County Code Section 15.56.100. Industrial uses may not exceed 65 dBA day / 60 dBA night (one-hour Leq) at neighboring property lines. An agricultural processing facility needs a use permit if noise exceeds 65 dBA day or 60 dBA night at the property line.
Unincorporated Glenn County sets numeric decibel limits in its zoning noise standard, Glenn County Code Section 15.56.100. Maximum one-hour equivalent sound levels (Leq, dBA) at a receiving property are 55 day / 45 night for residential, 60 / 55 for commercial, and 65 / 60 for industrial. Sensitive receptors (dwellings, hospitals, schools) are capped at 57 day / 50 night.
Outdoor amplified music in unincorporated Glenn County is regulated by Glenn County Code Section 10.25.020: between 10:00 p.m. and 7:00 a.m. (11:00 p.m. Fri/Sat), audio equipment operated outside is prohibited if plainly audible 50 feet from the device. The zoning code (Section 15.56.100) also exempts only non-electronically amplified sound at sporting, amusement, and entertainment events.
Glenn County Code Section 10.25.020 limits audio equipment played from a motor vehicle on any county roadway: sound plainly audible 10 feet from the vehicle is prima facie evidence of a violation, at any time. Engine and exhaust noise is governed by California Vehicle Code sections 27150-27151, enforced by the CHP and Sheriff.
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