Decibel Limits: Rancho Cucamonga vs Victorville
How do decibel limits rules compare between Rancho Cucamonga, CA and Victorville, CA?
Rancho Cucamonga and Victorville have similar restriction levels.
Rancho Cucamonga, CA
San Bernardino County
Rancho Cucamonga Municipal Code Chapter 8.17 sets exterior decibel limits by receiving land use. Residential zones are capped around 55 dBA day (7 AM-10 PM) and 45 dBA night (10 PM-7 AM) at the property line.
View full Rancho Cucamonga rules →Victorville, CA
San Bernardino County
Victorville sets zoning-based exterior decibel limits under VMC Chapter 13.01. Residential zones cap at about 65 dB(A) daytime and 55 dB(A) at night; commercial near 70 dB(A); industrial near 75 dB(A).
View full Victorville rules →Key Facts Comparison
| Fact | Rancho Cucamonga | Victorville |
|---|---|---|
| Residential Day | About 55 dBA 7 AM-10 PM | About 65 dB(A) |
| Residential Night | About 45 dBA 10 PM-7 AM | About 55 dB(A) |
| Commercial | About 60-65 dBA | About 70 dB(A) |
| Industrial | About 70-75 dBA | About 75 dB(A) |
| Measurement | At receiving property line | - |
| Method | - | A-weighted Type 2 meter |
Highlighted rows indicate differences between cities.
Rancho Cucamonga FAQ
How loud is 45 dBA?
About the level of a quiet library or soft conversation 10 feet away. That is why nighttime music audible inside a neighbor's home usually violates the ordinance.
Does the city use dBA meters?
Yes. Code Enforcement staff carry calibrated Type 2 sound-level meters for complex or disputed complaints, measured at the property line of the receiving parcel.
Victorville FAQ
How are decibels measured in Victorville?
With an A-weighted Type 2 sound level meter at the receiving property line. Impulsive or tonal sounds can receive a 5 dB assessment penalty.
What if the freeway ambient already exceeds the limit?
The measured ambient becomes the enforceable standard, so new sources cannot raise the total noise level above that ambient.
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