Lafayette Parish, LA Noise from Specific Sources: Generator Noise (2026)
Key Facts
- Residential daytime limit
- 60 dB(A), 7 a.m.–10 p.m.
- Residential nighttime limit
- 50 dB(A), 10 p.m.–7 a.m.
- Commercial limit
- 65 dB(A), 24 hours
- Industrial limit
- 70 dB(A), 24 hours
- Minimum fine
- $150 (Sec. 34-370(f))
Summary
Generators count as ordinary sound sources under Lafayette's noise code: their output at the property line can't top 60 dB(A) by day or 50 dB(A) overnight in residential areas, 65 dB(A) commercial, 70 dB(A) industrial.
No person shall cause, suffer, allow, or permit the operation of any source of sound on any source property in such a manner as to create a sound level that exceeds the sound level limits listed in Table I, as measured at any location at or within the property line of the receptor property.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 65).
Full Breakdown
City-Parish Code § 34-366(a) bars operating 'any source of sound', which includes portable and standby generators, above the Table I limits measured at the receptor property line: 60 dB(A) from 7 a.m. to 10 p.m. and 50 dB(A) from 10 p.m. to 7 a.m. in residential areas, 65 dB(A) commercial and 70 dB(A) industrial around the clock. The rule covers the City of Lafayette and the unincorporated parish alike, the code defines 'Lafayette' as both areas together. No exemption covers ordinary backup power; only true emergency-energy-release devices and declared emergency work are excused under § 34-368.
Violations & Fines
A noise control officer can cite generator noise as a major or minor violation under § 34-370; an uncorrected or major violation carries a minimum $150 fine plus court costs, and enforcement agencies may order the generator shut off immediately.
Frequently Asked Questions
Can I run a generator overnight in Lafayette?
Does this apply if I live outside Lafayette city limits?
Is my emergency generator exempt during a power outage?
Sources & Official References
Other rules in Lafayette Parish
Compare Lafayette Parish to another location·View the Louisiana noise from specific sources overview
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