Noise Ordinances in Los Angeles County, CA (2026)

7 county-level rules, plus city-specific rules for 20 cities in Los Angeles County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Los Angeles County. If you live within an incorporated city, that city's own rules apply — see the city list below.

Quiet Hours

Los Angeles County Code Title 12, Chapter 12.08 establishes exterior noise standards for unincorporated areas. Residential zones are limited to 50 dBA daytime and 45 dBA nighttime. Nighttime quiet hours run from 10 PM to 7 AM.

LA County Quiet Hours & Noise Standards

Heavy Restrictions

Full ordinance details →Official source ↗

Construction Hours

LA County Code Section 12.08.440 restricts construction in unincorporated areas to weekdays 7 AM–7 PM and Saturdays 8 AM–5 PM. Construction is prohibited on Sundays and legal holidays. Equipment must have mufflers in good condition.

LA County Construction Noise Hours

Heavy Restrictions

Full ordinance details →Official source ↗

Barking Dogs

LA County Code Title 10, Section 10.40.065 addresses habitual barking as a public nuisance. Dogs that bark, howl, or whine excessively for prolonged periods disturbing neighbors may trigger enforcement by LA County Animal Care and Control.

LA County Barking Dog Noise Rules

Some Restrictions

Full ordinance details →Official source ↗

Leaf Blower Rules

Gas-powered leaf blower sales banned statewide since January 2024. In unincorporated LA County, no lawn mower, blower, or mechanical device creating loud noise may operate between 10 PM and 7 AM within residential zones or 500 ft of a residence per Chapter 12.08.

LA County Unincorporated Leaf Blower and Equipment Noise Rules

Some Restrictions

California AB 1346 (2021–2022) — Small Off-Road Engines (Gas-Powered Leaf Blower Phase-Out)

(a) (1) By July 1, 2022, the state board shall, consistent with federal law, adopt cost-effective and technologically feasible regulations to prohibit engine exhaust and evaporative emissions from new small off-road engines, as defined by the state board. Those regulations shall apply to engines produced on or after January 1, 2024, or as soon as the state board determines is feasible, whicheve...

Full ordinance details →Official source ↗

Amplified Music & Events

Amplified music and sound devices in unincorporated LA County are regulated under Chapter 12.08 (Noise Control). Residential areas: 45 dB nighttime (10 PM-7 AM), 50 dB daytime. Sound amplifying equipment in or within 500 ft of residential zones is restricted for commercial purposes.

LA County Unincorporated Amplified Music Noise Standards

Some Restrictions

Full ordinance details →Official source ↗

Decibel Limits

LA County Code Section 12.08.390 establishes tiered exterior noise standards by zone for unincorporated areas. Residential limits are 50 dBA day and 45 dBA night. Commercial zones allow 60/55 dBA and industrial zones allow 70 dBA at all times.

LA County Decibel Limits by Zone

Heavy Restrictions

Full ordinance details →Official source ↗

Outdoor Music

LA County Code Chapter 12.08 restricts amplified sound and outdoor music in unincorporated areas to the same exterior noise standards by zone. Loudspeakers and amplified devices are specifically regulated under Section 12.08.450.