San Clemente, CA Noise from Specific Sources: Generator Noise (2026)
Key Facts
- Classification
- Generators are a 'fixed noise source'
- Daytime residential limit
- 55 dB(A), 7 a.m.-10 p.m.
- Nighttime residential limit
- 50 dB(A), 10 p.m.-7 a.m.
- Emergency exemption
- Backup power during outage exempt
- Exception process
- Apply to Community Development Director
Summary
San Clemente treats a generator as a fixed noise source under Chapter 8.48, meaning it must stay within the same exterior decibel limits as any stationary equipment, dropping from 55 dB(A) daytime to 50 dB(A) at night on residential property, unless it is emergency backup power.
"Fixed noise source" shall mean a stationary device which creates sounds while fixed or motionless including but not limited to industrial and commercial machinery and equipment, pumps, fans, compressors, generators, air conditioners and refrigeration equipment.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Traffic: Supplement 30 | Code of Ordinances: Supplement 66 Update 1).
Full Breakdown
020 defines a 'fixed noise source' as a stationary device that creates sound while fixed or motionless, expressly listing generators alongside pumps, fans, compressors, air conditioners and refrigeration equipment. and 50 dB(A) overnight on residential land, with higher allowances on commercial and industrial parcels. A generator running continuously that pushes ambient noise more than 5 dB(A) over the standard for more than fifteen minutes in an hour, or more than 20 dB(A) over the standard at all, violates the chapter regardless of the time of day.
090(D) exempts any mechanical device, apparatus or equipment connected with emergency machinery, vehicle or work, which covers a generator used during an actual power outage or declared emergency, but does not excuse a generator run routinely for testing or as a standing power source. 040 separately bars any loud or unnecessary noise that disturbs a neighborhood regardless of the source.
Violations & Fines
A generator that violates the exterior noise standards is enforced as a public nuisance under Section 8.48.010, and each of the five exceedance thresholds in Section 8.48.050 is independently prima facie evidence of a violation under Section 8.48.070(Q). Violations are cited through the City's administrative citation program and, absent a different specified penalty, fall under the general Section 1.16.010 penalty of up to $1,000 and six months in jail as a misdemeanor, or infraction fines starting at $100.
Frequently Asked Questions
Does San Clemente regulate the noise from a home backup generator?
Is a generator exempt from noise limits during a power outage?
Can I get permission to run a noisy generator over the limit?
Sources & Official References
Other rules in San Clemente
California rules heatmap·Compare San Clemente to another location·View the California noise from specific sources overview
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