Construction Hours: Chino vs Ontario
How do construction hours rules compare between Chino, CA and Ontario, CA?
Chino and Ontario have similar restriction levels.
Chino, CA
San Bernardino County
Construction noise in Chino is exempt from the exterior decibel limits in CMC § 9.40.040 only when the work occurs within designated construction hours. The City of Chino General Plan Noise Element (Objective N-1.3, Policy P2) limits construction work near noise-sensitive uses to 7:00 a.m. to 7:00 p.m., and CMC Chapter 9.40 carries that limit through as the exemption window.
View full Chino rules →Ontario, CA
San Bernardino County
Ontario limits construction noise under OMC 5-29.09. Allowed hours are 7 AM to 8 PM weekdays and 8 AM to 6 PM Saturday. Sunday and holiday work near residences is restricted absent a waiver.
View full Ontario rules →Key Facts Comparison
| Fact | Chino | Ontario |
|---|---|---|
| Permitted hours | 7:00 a.m. to 7:00 p.m. | - |
| Source authority | Chino General Plan Noise Element, Objective N-1.3 Policy P2 | - |
| Exemption mechanism | CMC § 9.40 exempts construction within designated hours | - |
| Sunday/holiday rule | Same 7 a.m.–7 p.m. window applies; outside that window standard noise limits control | - |
| Typical construction noise | 80–90 dBA at 50 ft (per Chino GP EIR §4.10) | - |
| Weekdays | - | 7 AM to 8 PM |
| Saturday | - | 8 AM to 6 PM |
| Sunday and Holidays | - | Restricted near homes |
| Code Section | - | OMC 5-29.09 |
| Equipment | - | Mufflers and noise reduction required |
Highlighted rows indicate differences between cities.
Chino FAQ
When can construction start in Chino?
7:00 a.m. is the earliest, per Chino General Plan Noise Element Policy P2 (Objective N-1.3). Work must stop by 7:00 p.m.
Can my neighbor pour concrete on Sunday?
Only within the 7 a.m.–7 p.m. window and only if the activity stays under CMC § 9.40.040 limits. The city does not separately exempt weekend or holiday construction.
What about emergency repairs?
Emergency repairs to gas, water, sewer, electrical, or telephone utilities are typically exempted from noise rules; non-emergency construction is not.
Ontario FAQ
When can construction start in Ontario, CA?
7 AM to 8 PM weekdays and 8 AM to 6 PM Saturdays. Sunday and holiday work near residences is generally not allowed without a waiver.
Are emergency repairs exempt?
Yes. Emergency utility, public-safety, and storm-damage repairs are exempt from the normal construction hours.
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