Noise from Specific Sources in Los Angeles, CA (2026)
11 verified noise from specific sources rules for Los Angeles, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
HVAC & Mechanical Noise
LAMC Section 112.02 makes it unlawful to operate air conditioning, refrigeration, heating, pumping, or filtering equipment in a manner that causes noise on any other occupied property to exceed the ambient noise level by more than 5 decibels. This applies to all residential and commercial HVAC systems.
Los Angeles HVAC & Mechanical Equipment Noise
Heavy RestrictionsBar & Nightclub Noise
Los Angeles regulates bar and nightclub noise under LAMC Section 116.01 (loud, unnecessary, and unusual noise) and LAMC 115.02 (amplified sound). The LAPD Noise Enforcement Team specifically handles music from nightclubs. Venues must keep noise from disturbing the peace of any neighborhood.
Los Angeles Bar & Nightclub Noise Regulations
Heavy RestrictionsCar Alarm Limits
LAMC Section 114.06 requires vehicle theft alarm systems to automatically silence within 5 minutes. Violation is an infraction. Vehicle owners are responsible for ensuring their alarms comply, and chronically malfunctioning alarms may result in the vehicle being towed.
Los Angeles Car Alarm Regulations
Heavy RestrictionsGenerator Noise
LAMC Section 112.05 limits powered equipment to 75 dB(A) at 50 feet. Section 116.01 prohibits operating machinery creating loud noise in residential zones between 10 PM and 7 AM. Emergency generator use during power outages is generally permitted but must still minimize disturbance.
Los Angeles Generator Noise Regulations
Heavy RestrictionsHelicopter Noise
Federal aviation law preempts most local helicopter-noise authority, leaving Los Angeles to coordinate voluntary routes through the FAA Los Angeles Helicopter Noise Initiative while LAMC §41.40 covers only ground-based aircraft operations and accessory equipment.
Helicopter Noise In Los Angeles Largely Federally Preempted
Some RestrictionsConstruction Equipment Noise
LAMC §112.05 limits powered construction equipment operating within 500 feet of any residence to 75 dBA measured at 50 feet, and LAMC §41.40 confines noisy work to weekday daytime hours, Saturday mornings, with Sunday and holiday silence.
LA Caps Construction Equipment Noise Near Residences
Some RestrictionsDelivery Truck Noise
LAMC §80.36.4 restricts commercial vehicles over three tons in residential zones during nighttime hours, LAMC §41.40 bars excessive noise generally, and California Vehicle Code §27007 mandates working mufflers and bans modified exhausts.
Late-Night Delivery Truck Noise Restricted In LA Residential Areas
Some RestrictionsHelicopter Flight Paths
FAA controls all helicopter routes and altitudes; Los Angeles cannot regulate flight paths. Voluntary measures from the LA Helicopter Noise Coalition and FAA Reauthorization Act 2018 §175 set non-binding altitude and routing guidance over residential areas.
Helicopter Flight Paths Over Los Angeles
Few RestrictionsHospital Helipad Noise
Hospital emergency helipads in Los Angeles need a Conditional Use Permit under LAMC §13.04 and must meet LABC §1503 design standards. California exempts emergency helicopter operations at hospital pads from local noise enforcement during patient transport.
Hospital Helipad Noise And Permitting
Some RestrictionsAirport Engine Run-up
Non-emergency engine maintenance run-ups at LAX must occur inside the Ground Run-up Enclosure operating since 2010. LAWA noise abatement procedures bar nighttime open-ramp run-ups and restrict thrust levels and durations on aircraft parking aprons.
LAX Airport Engine Run-Up Restrictions
Heavy RestrictionsLow-Frequency Bass Limits
LAMC §111.03 sets dB(C) bass limits at the property line in addition to dB(A) ambient thresholds, targeting subwoofer and amplified sub-bass below 125 Hz. Exceeding either A-weighted or C-weighted limit qualifies as a noise violation.
Low-Frequency Bass Limits Under LAMC
Some RestrictionsLooking for Los Angeles County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Los Angeles city rules.
Noise from Specific Sources in Los Angeles County →