Noise from Specific Sources in Lafayette, LA (2026)
4 verified noise from specific sources rules for Lafayette, Louisiana, sourced directly from the municipal code and official government pages.
Verified from official government sources
HVAC & Mechanical Noise
Lafayette treats HVAC units, refrigeration equipment, and transformers as 'steady pure tone' noise sources under City-Parish Code § 34-366(d): mechanical devices emitting a whine, hum or buzz. Their Table I decibel ceiling drops by 5 dB(A) versus ordinary sound, and residential HVAC specifically can't exceed 55 dB(A) at night.
Lafayette HVAC Steady-Tone Noise Limit
Some RestrictionsLafayette City-Parish Code of Ordinances § 34-366(d)
Steady pure tones. If the sound source under investigation is a mechanical device, and is, in the investigating officer's opinion, emitting a sound with a steady tonal quality, the permissible sound level limits in Table I shall be reduced by five dB(A). The sound emissions must be comprised of a single frequency or a narrow cluster of frequencies, which may be referred to as a whine, hum or bu...
Car Alarm Limits
Lafayette requires exterior burglar and fire alarms on both buildings and motor vehicles to self-terminate under City-Parish Code § 34-369(6): within five minutes for continuous sound, or ten minutes if the alarm sounds intermittently. The rule applies regardless of the alarm's measured decibel level.
Lafayette Car & Building Alarm Time Limit
Some RestrictionsLafayette City-Parish Code of Ordinances § 34-369(6)
An exterior burglar alarm and/or fire alarm of a building or motor vehicle must be activated in such a manner that the alarm terminates its operation, after activation, within five minutes if the sound is emitted without interruption and ten minutes if the sound emitted is intermittent. At all times, the limits set forth in Table I of section 34-366 do not apply.
Delivery Truck Noise
Lafayette bars commercial trucks from running refrigeration units within 250 feet of residential property overnight under City-Parish Code § 34-369(4): 10:00 p.m. to 7:00 a.m. on weekdays, and 10:00 p.m. to 9:00 a.m. on weekends. The restriction applies regardless of the unit's measured decibel level.
Lafayette Truck Refrigeration Unit Noise Curfew
Some RestrictionsLafayette City-Parish Code of Ordinances § 34-369(4)
The operation of any commercial truck with refrigeration units may not be conducted within 250 feet of any residential property between the hours of 10:00 p.m. and 7:00 a.m. on weekdays or between the hours of 10:00 p.m. and 9:00 a.m. on weekends.
Low-Frequency Bass Limits
Lafayette lets its noise control officer measure rhythmic bass from an amplified sound system inside a complainant's residence, then caps it under City Code § 34-366(c) Table II at 3 dB(C) above ambient on weeknights between 10:00 p.m. and 7:00 a.m., and 5 dB(C) above ambient on weekend nights and all other times.
Lafayette Rhythmic Bass & Amplified Sound Limit
Some RestrictionsLafayette City-Parish Code of Ordinances § 34-366(c), Table II
If the source of sound is an amplified sound reproduction device, and the complainant states that the rhythmic bass component of the music is disturbing within the complainant's residence, the noise control officer may take sound level measurements within the residence of the complainant. No person shall cause, suffer, allow, or permit the operation of any amplified source of sound in such a ma...
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County ordinances apply to unincorporated areas and may supplement Lafayette city rules.
Noise from Specific Sources in Lafayette Parish →