How Chico Handles Noise Ordinances: A Practical Guide

Chico maintains 96 local ordinances across all categories, and 10 of those deal specifically with noise ordinances. Here is a breakdown of what the city actually requires, what is prohibited, and where Chico falls on the strict-to-permissive spectrum compared to other cities.

Quiet Hours

Chico Municipal Code Chapter 9.38 sets dB-based limits at the property line. On residential property the cap is 70 dBA daytime (7 a.m.–9 p.m.) and 60 dBA nighttime (9 p.m.–7 a.m.). A separate 'general noise' rule under §9.38.052 prohibits any unreasonable noise at any time without needing a sound-level meter.

Key details: Daytime residential limit: 70 dBA, 7 a.m.–9 p.m. (CMC §9.38.030). Nighttime residential limit: 60 dBA, 9 p.m.–7 a.m. (CMC §9.38.030). General unreasonable noise: Prohibited any time, no meter needed (CMC §9.38.052). Measurement standard: A-weighted dB, Type 1 or 2 sound-level meter. Code chapter: Chico Municipal Code Ch. 9.38.

Citations under CMC §9.38.054 are typically issued as administrative citations or misdemeanor infractions. Repeated nuisance party noise in the south-campus CSU Chico neighborhoods is a frequent enforcement focus.

Construction Hours

Under CMC §9.38.060 categorical exemptions, construction is permitted 7 a.m.–9 p.m. Monday–Saturday and 10 a.m.–6 p.m. on Sundays and holidays. For new residential development and for work in commercial/industrial zones, an extended summer window (June 15–Sept 15) allows a 6 a.m. start on non-Sunday/holiday days. Construction equipment must stay under 83 dBA at 25 ft and 86 dBA at the property line.

Key details: Weekday/Saturday hours: 7 a.m.–9 p.m. (CMC §9.38.060). Sunday/holiday hours: 10 a.m.–6 p.m.. Summer early start (Jun 15–Sep 15): 6 a.m. start for new residential & commercial/industrial zones. Equipment limit: 83 dBA at 25 ft from source. Property line limit: 86 dBA at project property plane.

Working outside permitted hours, or exceeding the 83/86 dBA equipment caps, subjects the contractor and property owner to citation under CMC §9.38.054. Stop-work orders may issue for repeated violations.

Outdoor Music

Amplified outdoor music in Chico is bounded by the dBA limits in §§9.38.030–9.38.050 unless the public works director issues a special-event permit under CMC §9.38.080. Applications must be filed at least 14 days before the event, and permitted noise cannot exceed the public-property baseline (60 dBA at 25 ft).

Key details: Application lead time: 14 days before event (§9.38.080(B)). Issuing officer: Public Works Director. Cap on permitted noise: Not more lenient than 60 dBA @ 25 ft (public-property limit). Conditional permit term: Up to 6 months (§9.38.070), council ratification. Bidwell Park events: Also subject to CMC Title 12R.04 park rules.

Operating outdoor amplified equipment without a permit when limits will be exceeded is an infraction: $250 / $500 / $1,000 (§9.38.130). Public-property events at Bidwell Park are additionally subject to the park rules in CMC Title 12R.04 (per §9.38.015(A)).

This is not one of those rules that cities tend to ignore. Chico actively enforces its outdoor music requirements.

Barking Dogs

Barking dogs are regulated under Title 7 (not Title 6) of the Chico Municipal Code. CMC §7.08.120 declares howling, barking, or unusual noises that disturb a neighborhood a public nuisance. Chico Animal Services uses a structured process: a 7-day Notice of Violation, then a complainant-completed barking log, then an administrative citation ($75 / $150 / $300).

Key details: Primary code section: CMC §7.08.120 (Title 7, Animals). Process step 1: 7-day Notice of Violation. Process step 2: Complainant barking log. Fines: $75 / $150 / $300 escalating. Animal Services phone: (530) 897-4960.

Title 7 administrative fines: $75 first offense, $150 second offense, $300 third offense. Each day a violation continues counts as a separate offense.

Aircraft Noise

Chico has no local aircraft-noise ordinance. Aircraft in flight are exclusively regulated by the FAA under federal law (49 U.S.C. §40103), which preempts municipal noise rules. Chico Municipal Airport (CIC) operations are governed by FAA Part 150 framework. Chico's noise chapter (CMC Ch. 9.38) regulates ground-based human, machine, animal and device sources — it does not list aircraft as a regulated source.

Key details: Local aircraft rule: None — CMC Ch. 9.38 does not regulate aircraft. Preempting law: 49 U.S.C. §40103 (FAA exclusive in-flight authority). Local airport: Chico Municipal Airport (CIC), city-owned. Complaint to: FAA, not Chico Police. Drone noise: FAA Part 107 governs operation.

No Chico-issued violations for aircraft in flight. FAA Form 8740-5 is the federal complaint pathway. Ground noise from airport operations would fall under CMC §9.38.040's 70 dBA commercial/industrial property-plane limit.

If you are coming from a city with tighter rules, you will find Chico gives residents more flexibility on aircraft noise.

Leaf Blower Rules

Chico Municipal Code Ch. 9.38 contains no leaf-blower-specific time or gas-engine ban. Leaf blowers are regulated under the general residential noise caps in CMC §9.38.030 — 70 dBA at the property line 7 a.m.–9 p.m., 60 dBA 9 p.m.–7 a.m. — and the §9.38.052 unreasonable-noise standard. California Title 24 / CARB small off-road engine rules apply at the equipment level.

Key details: Local leaf-blower ordinance: None specific — general noise rules apply. Daytime cap at property line: 70 dBA, 7 a.m.–9 p.m.. Nighttime cap at property line: 60 dBA, 9 p.m.–7 a.m.. State SORE rule: CARB bans new gas blower SALES (not use) statewide. Enforcement path: CMC §9.38.052 unreasonable noise (no meter needed).

A blower exceeding the 70/60 dBA caps at the property line, or operating unreasonably (e.g., commercial crew running multiple units pre-dawn in a residential zone), is cited under CMC §9.38.054.

Chico is more permissive than most cities when it comes to leaf blower rules. That said, there are still limits.

Amplified Music & Events

Amplified sound at public-property special events requires a permit application filed at least 14 days in advance (CMC §9.38.080). Vehicle-mounted sound systems are banned if audible more than 50 ft in public parks/parking lots or 25 ft on private property. Outside permitted events, residential 70/60 dBA limits and the §9.38.052 unreasonable-noise rule apply.

Key details: Public event amplification permit: CMC §9.38.080 — file ≥14 days ahead. Vehicle audio (public park/lot): Not audible >50 ft. Vehicle audio (private property): Not audible >25 ft. Residential amplified cap (day): 70 dBA at property line. Residential amplified cap (night): 60 dBA at property line, 9 p.m.–7 a.m..

Unpermitted public-event amplification or violations of permit conditions are cited under CMC §9.38.054. Vehicle audio violations carry separate citation. Residential party noise is typically handled via §9.38.052 with a warning escalating to citation.

Industrial Noise

Chico Municipal Code §9.38.040 caps noise from any commercial or industrial property at 70 dBA, measured at any point outside the property plane — a single flat limit with no day/night split. Construction is treated separately under §9.38.060(B) with a higher 83 dBA equipment / 86 dBA property-plane allowance during permitted hours.

Key details: Limit: 70 dBA at property plane (24/7). Code section: Chico Municipal Code §9.38.040. Construction carve-out: 83 dBA @25 ft / 86 dBA property plane, 7a–9p. Fine schedule: $250 / $500 / $1,000 (1st/2nd/3rd). Meter standard: ANSI Type 1 or 2, A-weighted, slow response.

Infraction fines: $250 first offense, $500 second, $1,000 third (§9.38.130). Each hour of continuing violation is a separate offense. Also declared a public nuisance — city attorney may seek injunction (§9.38.140). Enforcement is complaint-driven (§9.38.015(B)).

Decibel Limits

Chico sets explicit, meter-enforceable dBA limits by property type. Residential (CMC §9.38.030): 70 dBA day (7 a.m.–9 p.m.) / 60 dBA night (9 p.m.–7 a.m.) at the property plane, plus a 60 dBA interior limit in multifamily units. Commercial/industrial (§9.38.040): 70 dBA flat. Public property (§9.38.050): 60 dBA at 25 feet from source.

Key details: Residential day: 70 dBA, 7 a.m.–9 p.m.. Residential night: 60 dBA, 9 p.m.–7 a.m.. Multifamily interior: 60 dBA inside neighbor unit, windows/doors closed. Commercial/industrial: 70 dBA flat, all hours. Public property: 60 dBA at 25 ft.

Infraction. Fines under §9.38.130: $250 / $500 / $1,000 minimum for 1st/2nd/3rd offense, including Butte County Superior Court assessments. Each hour is a separate offense. Officer normally issues warning first (§9.38.054(A)); warning is binding on all current residents for 180 days. Citation without warning allowed when two distinct complaints exist or noise is during weeknight quiet hours.

Vehicle Noise

CMC §9.38.056 regulates vehicle sound systems and horns. Sound amplification audible >50 ft from a vehicle on public property (other than a highway), or >25 ft / beyond the property line on private property, is prohibited. Vehicle horns may not be sounded when at rest absent imminent danger. Highway vehicle noise is governed by the California Vehicle Code (preempted from local meter limits).

Key details: Public-property audibility limit: 50 ft from vehicle. Private-property audibility limit: 25 ft from vehicle or property line. Highway noise: Cal. Veh. Code §27007, §§27150–27160. Horns at rest: Prohibited unless imminent danger (§9.38.056(C); cf. CVC §27001). Bicycle sound systems: Prohibited >50 ft audibility on public property.

Infraction under §9.38.130 (minimums: $250 / $500 / $1,000). Highway-based modified exhaust or excessive amplification is cited under the California Vehicle Code, not the CMC. Officer discretion under §9.38.054 (warning vs. citation) does not apply to §9.38.056 — direct citation is authorized.

The Bottom Line

Compared to many U.S. cities, Chico gives residents more room on noise ordinances. 2 of the 10 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.

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