Noise Ordinances in Downey, CA (2026)
9 verified noise ordinances for Downey, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Quiet Hours
Downey enforces quiet hours from 10 PM to 7 AM in residential zones under Municipal Code Section 4600. Power tools, machinery, and equipment creating disturbing noise are prohibited during these hours.
Downey Quiet Hours Ordinance
Some RestrictionsConstruction Hours
Downey Municipal Code Section 4600 restricts construction noise in residential zones between 10 PM and 7 AM. Construction is effectively permitted from 7 AM to 10 PM on all days in residential areas.
Downey Construction Hours Ordinance
Some RestrictionsBarking Dogs
Downey Municipal Code Section 4600 prohibits keeping any dog, animal, or fowl that by barking, howling, or other sound disturbs the peace or comfort of neighboring inhabitants.
Downey Barking Dog Ordinance
Some RestrictionsLeaf Blower Rules
Downey regulates leaf blower noise under its general noise ordinance. Gas-powered leaf blowers must comply with the 85 dBA construction equipment limit and operate only during permitted hours.
Downey Leaf Blower & Equipment Noise Rules
Some RestrictionsCal. AB 1346 (2021) - Small Off-Road Engines (Gas Leaf Blower Phase-Out)
Existing law imposes various limitations on the emissions of air contaminants for the control of air pollution from vehicular and nonvehicular sources. Existing law assigns the responsibility for controlling vehicular sources of air pollution to the State Air Resources Board. This bill would require the state board, by July 1, 2022, consistent with federal law, to adopt cost-effective and techn...
Amplified Music & Events
Downey prohibits amplified music that exceeds ambient noise levels by more than 5 dBA at the property line. Quiet hours from 10 PM to 7 AM carry stricter limits.
Downey Amplified Music & Sound Regulations
Some RestrictionsAircraft Noise
Downey does not have a local aircraft noise ordinance. Aircraft noise is regulated federally by the FAA. The nearest major airports are Long Beach Airport (LGB) and LAX. The former NASA/Vultee industrial site affects local noise patterns.
Downey Aircraft Noise Information
Few RestrictionsIndustrial Noise
Industrial noise in Downey must not exceed established ambient levels by more than 5 dBA at the receiving property line. Corrective factors apply during daytime hours (7 AM - 10 PM).
Downey Industrial & Commercial Noise Limits
Some RestrictionsDecibel Limits
Downey Municipal Code Section 4600 establishes noise standards. Any noise exceeding 100 decibels at 25 feet or more from the source is a prima facie violation. Power tools and equipment in residential zones are restricted between 10 PM and 7 AM.
Downey Noise Decibel Limits
Some RestrictionsOutdoor Music
Downey Municipal Code Section 4600 prohibits noise from radios, musical instruments, loudspeakers, or amplified sound that disturbs neighboring residents, particularly between 10 PM and 7 AM in residential zones.
Downey Outdoor Music & Amplified Sound Rules
Some RestrictionsLooking for Los Angeles County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Downey city rules.
Noise Ordinances in Los Angeles County →