City of Los Angeles Noise Ordinance: Limits, Hours, and Penalties

The Los Angeles noise ordinance is a layered set of rules in Chapter XI and Section 41.40 of the Municipal Code that sets baseline decibel limits by zone, restricts when construction and loud equipment can operate, and gives police and animal services specific tools to handle music, barking dogs, car alarms, and repeat loud-party addresses. Most violations turn on one recurring standard: noise that pushes the level on a neighbor’s property more than five decibels above the ambient floor for that zone.

Ambient Decibel Limits by Zone

Section 111.03 sets the minimum presumed ambient noise level for every part of the city. Daytime runs from 7:00 a.m. to 10:00 p.m.; nighttime runs from 10:00 p.m. to 7:00 a.m.¹

Residential zones (R1 through R5 and similar): 50 dB(A) day, 40 dB(A) night
Commercial zones (C1, C2, and similar): 60 dB(A) day, 55 dB(A) night
Light industrial (M1): 60 dB(A) day, 55 dB(A) night
Heavy industrial (M2, M3): 65 dB(A) day and night

Where two zones share a boundary, the lower limit applies. If the real background noise in an area is quieter than the table, the presumed level still acts as the floor for enforcement. That floor matters because a long list of sections (radios and TVs, air conditioners, powered equipment, vehicle repairs) define a violation as any source that pushes a neighbor’s noise level more than five decibels above that ambient number.¹

Construction Hours

Section 41.40 controls when construction, excavation, and repair work can happen. The windows are tighter than most people expect, and they shift across the week.²

Monday through Friday: 7:00 a.m. to 9:00 p.m.
Saturdays and national holidays: 8:00 a.m. to 6:00 p.m.
Sundays: no construction, with a narrow exception for homeowners working on their own single-family dwelling

The rule covers power tools, heavy machinery, and even loud hand-tool work that disturbs nearby residences. Contractors are caught out regularly by two details: Saturday starts at 8:00 a.m. rather than 7:00, and Saturday ends at 6:00 p.m. rather than 9:00. Hired contractors do not get the Sunday homeowner exception.²

A project that genuinely needs to work outside these hours can apply to the Board of Police Commissioners for a temporary noise variance. Without one, officers can cite the contractor or order work to stop on the spot.

Music, Parties, and Amplified Sound

Section 112.01 covers radios, televisions, musical instruments, and any device that produces or amplifies sound. It sets up several independent tests, and failing any one of them is enough.³

It is unlawful to operate any sound-producing device in a way that disturbs the peace and comfort of neighbors or a reasonable person in the area. That standard applies around the clock. Separately, any noise from these devices that carries more than 150 feet from the property line in a residential zone (or within 500 feet of one) is automatically a violation, whether anyone has complained or not. And if the noise exceeds the ambient level on a neighbor’s property by more than five decibels, that is a separate violation under the same section.³

The LAPD Noise Enforcement Team applies the five-decibel standard for nightclub complaints as well.⁴

Repeat loud-party addresses face an escalating fee schedule under Section 41.58. Fines can reach $8,000 per occurrence by the sixth violation at the same address within a 12-month period. Because the fees attach to the location, landlords have a direct financial reason to act on problem tenants.

Leaf Blowers, AC Units, and Powered Equipment

Section 112.04 restricts leaf blowers, lawn mowers, riding tractors, and similar powered landscaping equipment in residential areas. They cannot run between 10:00 p.m. and 7:00 a.m. inside any residential zone or within 500 feet of a residence.⁵

Even during allowed hours the five-decibel-above-ambient rule still applies, and Section 112.05 caps powered residential equipment at 65 dB(A) measured at 50 feet, which limits how loud the machine itself can be.⁶

Air conditioners, pool pumps, filtering systems, and heating equipment fall under Section 112.02. The test is the same: raising the noise on a neighbor’s property, or in an adjoining unit in a multi-family building, more than five decibels above ambient is a violation. Routine maintenance, testing reasonably needed to keep the equipment working, and emergency repairs are exempt. A chronically loud AC unit that runs all summer with no attempt at repair or dampening is enforceable.⁷

Trash Trucks, Deliveries, and Car Alarms

Commercial refuse trucks, parking-lot sweepers, and vacuum trucks cannot operate within 200 feet of any residential building between 9:00 p.m. and 6:00 a.m. under Section 113.01. Emergency work and operations with a permit from the Board of Police Commissioners are the only exceptions.⁸

Commercial deliveries and other loading and unloading within 200 feet of a residence are restricted to the hours of 7:00 a.m. to 10:00 p.m. under Section 114.03. Beyond that 200-foot buffer, deliveries can happen at any time, so if an early-morning truck is a recurring problem, the distance from the residence is often the deciding fact.⁴

Under Section 114.06, any vehicle theft alarm that does not silence itself within five minutes of first sounding is in violation. The five-minute clock runs from the first audible sound. A violation is classified as an infraction.⁹

Vehicle repairs get their own rule. Repairing or testing a vehicle in a way that raises noise on a neighbor’s residential property more than five decibels above ambient is a violation, which is the trap for anyone running a repair side business out of a garage.

Barking Dogs

Section 53.63 handles barking dogs through a structured complaint process rather than an on-the-spot citation. “Excessive noise” means barking that unreasonably disturbs neighbors, and the city weighs frequency, volume, time of day, and whether the dog is being provoked.¹⁰

The stages work like this. A written complaint (with the complainant’s name, address, and phone number, the dog owner’s address, and a description of the noise) triggers a written notice to the owner asking for immediate abatement. A second complaint filed at least 15 days later lets the Department of Animal Services require both parties to a meeting. If the problem continues after the meeting, or the owner does not appear, the matter moves to a formal hearing. A second complaint generally needs to come from a different residence, though Animal Services can proceed on one complainant when the noise clearly affects that person.¹⁰

Penalties

Vehicle alarm violations under Section 114.06 are infractions, which carry fines but no jail time. Other noise violations can be charged as misdemeanors under the Municipal Code’s general penalty provisions, though enforcement in practice usually starts with warnings and escalates from there.

Loud-party fines under Section 41.58 climb with each repeat offense at the same address and can reach $8,000 per violation by the sixth occurrence in a 12-month window. Because those fees attach to the property, they follow the address regardless of who is throwing the party.

Barking-dog cases begin with a written warning and a 10-day correction window. If the noise continues, administrative citations start at $100 for the first offense and rise on a progressive scale to $500 per occurrence.

One boundary worth naming: aircraft noise is not covered. The Airport Noise and Capacity Act of 1990 largely preempts local rules on aircraft operations, so complaints about LAX or other local airport flights cannot be handled under the Municipal Code.

How to File a Noise Complaint

The right channel depends on whether the noise is happening right now and what kind of source it is.

For an active disturbance that needs a police response, call the LAPD non-emergency line at 877-ASK-LAPD (877-275-5273), which operates 24 hours a day. Do not call 911 for a noise complaint unless there is a genuine safety threat.¹¹

For recurring problems that do not need an officer tonight, use MyLA311. Call 311 or 213-473-3231, or use the MyLA311 website or mobile app.¹²

Specific categories handled by the LAPD Noise Enforcement Team (early or late construction, early or late trash pickup, early or late deliveries, and nightclub music) go through a written form. Download the NET complaint form from the LAPD website and email it to noise@lapd.online. A NET officer reviews each submission and contacts the reporting party with a disposition.¹³

Every complaint needs the same core details: the exact location of the noise source, the specific dates and times, and a description of what you see and hear. If the source is a business, include the company name, visible signage, and descriptions of managers, workers, trucks, or equipment. A dated log across multiple incidents makes a real difference. A single report of a loud Tuesday is hard to act on; a log showing construction starting at 6:30 a.m. every Saturday for three weeks gives officers a pattern and a reason to prioritize a site visit.¹⁴

1
American Legal Publishing. Los Angeles Municipal Code Section 111.03 – Minimum Ambient Noise Level
2
American Legal Publishing. Los Angeles Municipal Code Section 41.40 – Noise Due to Construction, Excavation Work – When Prohibited
3
American Legal Publishing. Los Angeles Municipal Code Section 112.01 – Radios, Television Sets, and Similar Devices
4
LAPD Online. Noise Enforcement Team
5
American Legal Publishing. Los Angeles Municipal Code Section 112.04 – Powered Equipment Intended for Repetitive Use in Residential Areas and Other Machinery, Equipment, and Devices
6
American Legal Publishing. Los Angeles Municipal Code Section 112.05 – Maximum Noise Level of Powered Equipment or Powered Hand Tools
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American Legal Publishing. Los Angeles Municipal Code Section 112.02 – Air Conditioning, Refrigeration, Heating, Pumping, Filtering Equipment
8
American Legal Publishing. Los Angeles Municipal Code Section 113.01 – Rubbish and Garbage Collection and Disposal
9
American Legal Publishing. Los Angeles Municipal Code Section 114.06 – Vehicle Theft Alarm Systems
10
American Legal Publishing. Los Angeles Municipal Code Section 53.63 – Barking Dog Noise
11
City of Los Angeles. Request City Services/Report Problems
12
City of Los Angeles. MyLA311 – Your Connection to City Services and Information
13
LAPD Online. CID Complaint Forms
14
Los Angeles Police Department. Noise Complaint Form