10 county-level rules, plus city-specific rules for 1 city in Stanislaus County, California.
Verified from official government sources
Unincorporated Stanislaus County's Noise Control Ordinance (Chapter 10.46) sets a nighttime period of 10:00 p.m. to 6:59 a.m. when exterior noise standards tighten. In residential zones the permitted maximum drops from 50 dB(A) during the day to 45 dB(A) at night, measured at the receiving property.
In unincorporated Stanislaus County, Section 10.46.060 of the Noise Control Ordinance bars construction equipment from producing an average sound level above 75 decibels at the property line of any parcel with a dwelling between 7:00 p.m. and 7:00 a.m. Daytime construction (7 a.m. to 7 p.m.) is effectively the permitted window.
Stanislaus County's Noise Control Ordinance (Chapter 10.46) does not apply decibel limits to barking dogs. Instead, animal noise complaints in the unincorporated county are referred to Stanislaus County Animal Services at (209) 558-7387, which encourages neighbor resolution and logs before a formal complaint.
Unincorporated Stanislaus County does not ban leaf blowers. Section 10.46.080 of the Noise Control Ordinance specifically exempts routine residential maintenance noise - including lawnmowers and leaf blowers - from the chapter's noise limits, provided the work occurs between 7:00 a.m. and 10:00 p.m.
In unincorporated Stanislaus County, Section 10.46.060 of the Noise Control Ordinance bars sound-amplifying equipment and live music from being audible to the human ear more than 200 feet away. Music and speech also trigger a 5 dB(A) reduction in the general exterior limits under Section 10.46.050.
Aircraft are expressly exempt from unincorporated Stanislaus County's Noise Control Ordinance under Section 10.46.080. Aircraft and airport noise are controlled by federal law (the FAA), with California setting a 65 dB CNEL airport-compatibility standard - the county cannot impose its own aircraft noise limits.
Industrial-zoned parcels in unincorporated Stanislaus County face a 75 dB(A) exterior limit day and night under Section 10.46.050, but noise received at a neighboring residential or noise-sensitive property is held to that property's stricter limit. Section 10.46.070 also prohibits perceptible vibration beyond the property line.
Section 10.46.050 of unincorporated Stanislaus County's Noise Control Ordinance sets exterior A-weighted decibel limits by zone: noise-sensitive 45/45, residential 50/45, commercial 60/55, and industrial 75/75 dB(A) for daytime (7 a.m.-9:59 p.m.) and nighttime (10 p.m.-6:59 a.m.).
Outdoor live music and sound systems in unincorporated Stanislaus County must not be audible more than 200 feet away under Section 10.46.060, and music noise reduces the general exterior limits by 5 dB(A) under Section 10.46.050. Permitted special events are exempt if they meet all permit conditions.
Section 10.46.060 of unincorporated Stanislaus County's Noise Control Ordinance bars car sound systems from being audible inside any dwelling from 10:00 p.m. to 7:00 a.m., or audible more than 50 feet away at other times, and requires vehicle alarms to shut off within 15 minutes. State Vehicle Code rules also apply.
1 cities in Stanislaus County have their own noise ordinances rules. Each link goes to that city's dedicated page with code citations.
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