How Antioch Handles Noise Ordinances: A Practical Guide

Antioch maintains 94 local ordinances across all categories, and 7 of those deal specifically with noise ordinances. Here is a breakdown of what the city actually requires, what is prohibited, and where Antioch falls on the strict-to-permissive spectrum compared to other cities.

Leaf Blower Rules

Powered lawn and garden equipment in Antioch may be operated between 7:00 AM and 7:00 PM on weekdays and 8:00 AM to 5:00 PM on weekends and holidays. This includes lawn mowers, edgers, trimmers, chainsaws, and pressure washers.

Key details: Weekday Hours: 7:00 AM – 7:00 PM. Weekend/Holiday: 8:00 AM – 5:00 PM. State Law: AB 1346 (no new gas SORE after 1/1/2024). Covered Equipment: Mowers, trimmers, blowers, chainsaws. HOA Override: HOAs may set stricter hours.

Contact your local code enforcement office for specific penalty information.

Vehicle Noise

Antioch Municipal Code section 5-17.02(B)(1)-(2) designates unauthorized vehicle horn use, modified/loud exhaust, and racing a stationary engine as disturbing noises that violate Chapter 17.

Key details: Citation: Antioch Municipal Code section 5-17.02(B)(1)-(2). Horn use: Only as required by California Vehicle Code. Exhaust standard: Equipped/constructed to prevent unreasonably loud noise. Engine racing: Prohibited when vehicle not in motion (except for repair/testing). State law overlay: Cal. Veh. Code sections 27150-27151.

Infraction citation under Antioch Municipal Code section 1-2.01 et seq., commonly issued together with a California Vehicle Code section 27150/27151 muffler citation.

Amplified Music & Events

Under Antioch Municipal Code section 5-17.03, no person may operate a loudspeaker or sound amplifier that projects sound outside of any building or vehicle anywhere in the city except during public events or for matters of public interest, and then only with a permit from the Antioch Chief of Police.

Key details: Citation: Antioch Municipal Code section 5-17.03. Default rule: No outdoor-projected amplified sound. Exceptions: Public events or matters of public interest with a Chief of Police permit. Vehicle stereos: Separately prohibited as a disturbing noise under section 5-17.02(B)(3).

Violation is an infraction or misdemeanor under Antioch Municipal Code section 1-2.01 et seq. Officers can also seize amplification equipment used in continuing violations and cite the operator under Penal Code section 415.

This is not one of those rules that cities tend to ignore. Antioch actively enforces its amplified music & events requirements.

Aircraft Noise

Antioch lies under the airspace of Contra Costa County's Buchanan Field Airport (CCR). County Airport Ordinance 88-82 Section 27 caps takeoff noise at 78 dBA daytime and 75 dBA from 10 PM to 7 AM, and prohibits touch-and-go and pattern operations from 10 PM to 7 AM weekdays (to 8 AM weekends and holidays).

Key details: Daytime takeoff cap: 78.0 dBA per FAA AC 36-3. Nighttime takeoff cap (10 PM - 7 AM): 75.0 dBA per FAA AC 36-3. Touch-and-go curfew: 10 PM - 7 AM weekdays; 10 PM - 8 AM weekends/holidays. Preferential arrival runway: Runway 19R. Preferential departure runway: Runway 32R.

Pilot or owner of a non-exempt aircraft exceeding the dBA caps, or conducting prohibited touch-and-go operations, is subject to administrative action under the Airport Regulations and may be cited as an infraction enforceable by the Public Works Director under Penal Code section 836.5 and Contra Costa County Ordinance Code section 14-8.000. Appeal to the Director of Public Works within 10 calendar days.

This is one of the stricter rules in Antioch's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

Quiet Hours

Antioch does not set fixed numeric quiet hours; instead, Antioch Municipal Code Chapter 17 prohibits any unreasonably loud, disturbing, or unnecessary noise that disturbs the peace, quiet, and comfort of a neighborhood at any hour.

Key details: Authority: Antioch Municipal Code Chapter 17 (Sections 5-17.01 - 5-17.06). Standard: Unreasonably loud, disturbing, or unnecessary noise. Fixed quiet hours: None set by ordinance; construction hours are codified separately. Enforcement agency: Antioch Police Department.

Violation of Chapter 17 is a misdemeanor or infraction under Antioch Municipal Code section 1-2.01 et seq. (general penalty). Police may also cite under California Penal Code section 415 for separate disturbing-the-peace charges.

Construction Hours

Antioch Municipal Code sections 5-17.04 and 5-17.05 limit construction activity and heavy construction equipment to 7 AM-6 PM weekdays (8 AM-5 PM if within 300 feet of an occupied dwelling) and 9 AM-5 PM on weekends and holidays. Violations can trigger Stop Work Orders.

Key details: Weekday hours: 7:00 a.m. - 6:00 p.m. (8:00 a.m. - 5:00 p.m. within 300 ft of an occupied dwelling). Weekend/holiday hours: 9:00 a.m. - 5:00 p.m. regardless of distance from dwellings. Heavy equipment definition: Grading/earth-moving equipment and diesel engine equipped machines; pickup trucks 1 ton or less excluded. Construction activity definition: Hammering, sawing, drilling, demolition, deliveries; audible beyond parcel perimeter. Enforcement tool: Stop Work Order (section 5-17.05(C)) plus general penalties.

Stop Work Order under section 5-17.05(C) plus an infraction/misdemeanor citation under section 1-2.01 et seq. Building permit holder must give assurance against future violations before the order is released.

This is one of the stricter rules in Antioch's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

Barking Dogs

Antioch Municipal Code section 6-1.102 defines a 'barking dog' as one that barks, bays, cries, howls or makes any noise for an extended period of time disturbing a person at any hour. An 'extended period of time' is incessant barking for 30+ minutes or intermittent barking for 60+ minutes in any 24-hour period. Antioch Animal Services enforces under both city code and Contra Costa County Code section 416-12.202.

Key details: Antioch citation: Antioch Municipal Code section 6-1.102 (definition); enforcement under Chapter 6-1. County citation: Contra Costa County Ordinance Code section 416-12.202. Incessant threshold: 30+ continuous minutes in 24 hours. Intermittent threshold: 60+ minutes on/off in 24 hours. Compliance window: 15 days after warning before second-report citation.

Notice of Citation and Fine from Antioch Animal Services under Contra Costa County Code section 416-12.202 after the 15-day compliance window expires. Continued violations can lead to escalating administrative penalties and, in extreme cases, a public-nuisance abatement action.

The Bottom Line

Antioch is tougher than many cities when it comes to noise ordinances. Out of the 7 rules covered here, 3 are rated strict. If you are a homeowner, renter, or business owner in Antioch, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

These rules come from Antioch's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.