Noise from Specific Sources in Union City, CA (2026)
2 verified noise from specific sources rules for Union City, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Car Alarm Limits
Union City bars using a vehicle horn or car alarm when the vehicle is parked unless there is an actual, imminent threat to life, health, or property.
Union City Car Alarm Noise Limits
Some RestrictionsUnion City Municipal Code § 9.40.043(C)
Vehicle horns, or other devices primarily intended to create a loud noise for warning purposes, shall not be used when the vehicle is at rest, or when a situation endangering life, health, or property is not imminent.
Generator Noise
Union City bars any machine, including a generator, from causing a 'noise disturbance,' and caps added sound on residential lots at 10 dBA above the ambient level measured at the property line.
Generator Noise Limits in Union City, CA
Some RestrictionsUnion City Municipal Code §§ 9.40.040, 9.40.041
No person shall produce, suffer or allow to be produced by any machine, animal or device, or any combination of same, any noise disturbance. (Ord. 275-86 § 1, 1986) § 9.40.041. Residential property noise limits. No person shall produce, suffer or allow to be produced by any machine, animal or device, or any combination of same, on residential property, a noise level more than 10 dBA above th...
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