Chino's Noise Ordinances: The Rules That Matter

Every city handles noise ordinances a little differently. In Chino, California, there are 10 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Quiet Hours

Chino does not impose a strict bedtime curfew on residents, but Chino Municipal Code Chapter 9.40 (Noise) sets enforceable A-weighted decibel limits at the receiving residential property line that drop 5 dB between 10:00 p.m. and 7:00 a.m. Section 9.40.040 (Exterior Noise Standards) caps continuous noise (L50) at 55 dBA daytime / 50 dBA nighttime, with maximum (Lmax) of 75 dBA daytime / 70 dBA nighttime.

Key details: Code section: Chino Municipal Code § 9.40.040 (Exterior Noise Standards). Nighttime window: 10:00 p.m. to 7:00 a.m.. Continuous noise cap (L50): 55 dBA day / 50 dBA night at the property line. Absolute max (Lmax): 75 dBA day / 70 dBA night. Loud-party fines: $250 / $500 / $750 per response (CMC Ch. 9.36, Ord. 2019-005).

Noise above the table limits is an infraction under Title 9 and a public nuisance. Loud-gathering violations under CMC Chapter 9.36 (amended by Ord. 2019-005, eff. 2019): written warning first response; $250 second response; $500 third response; $750 fourth response, cumulative within a 72-hour period (up to $1,500 for four calls). Parents responsible if the host is a minor.

Amplified Music & Events

Amplified music is regulated under two parallel layers in Chino: CMC § 9.40.040 (general exterior noise standards) caps any amplified sound at 55/50 dBA L50 day/night at the neighbor's property line, and CMC Chapter 9.36 — substantially rewritten by Ordinance No. 2019-005 — imposes flat administrative fines on hosts of 'loud or unruly gatherings' without any decibel proof, on a per-response escalating schedule.

Key details: Loud-party code: Chino Municipal Code Ch. 9.36 (rewritten by Ord. 2019-005). Fine schedule: Warning / $250 / $500 / $750 per response. Cumulative window: 72 hours; up to $1,500 for four responses. Decibel cap (any source): 75 dBA Lmax day / 70 dBA Lmax night at property line. Parental liability: Parents pay if responsible host is a minor.

First police response: written warning to the responsible person. Second response: $250. Third response: $500. Fourth response: $750. Fines are cumulative within 72 hours (up to $1,500 for four calls). Independent CMC § 9.40 citations and California Penal Code § 415 (disturbing the peace) charges remain available.

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

Vehicle Noise

On-road motor-vehicle exhaust and engine noise is primarily a matter of California Vehicle Code, not the Chino Municipal Code. Vehicle Code §27150 requires every motor vehicle to have an adequate muffler in constant operation, with no cutout, bypass, or similar device. §27151 prohibits modifying an exhaust system to amplify or increase noise; for passenger vehicles under 6,000 lb GVWR (other than motorcycles), an exhaust sound level over 95 dBA (measured per SAE J1492 / J1169) is a violation. CHP and Chino Police enforce these under state law. Article 2.5 (Veh. Code §§27200–27207) sets vehicle-class noise limits (e.g., motorcycles: 80 dBA at 50 ft for post-1985 models). Loud cars off public roadways, or stationary vehicle noise (revving in a driveway, idling refrigerated trucks), fall under Chino CMC §9.40 exterior noise standards (65 dBA day / 55 dBA night at residential property line). Cal. Vehicle Code §21461 preempts cities from regulating equipment on vehicles operated on public highways beyond what state law allows.

Key details: On-road exhaust muffler: Cal. Veh. Code §27150 — required, no cutouts/bypasses. Modified exhaust limit (passenger <6,000 lb GVWR): Cal. Veh. Code §27151 — 95 dBA SAE-method ceiling. Motorcycle limit (post-1985): 80 dBA at 50 ft (Veh. Code §§27200–27207). Vehicle Code preemption: Cal. Veh. Code §21461 — limits local equipment regulation. Stationary/off-road vehicle noise: Chino CMC §9.40.040 — 65 dBA day / 55 dBA night.

Vehicle Code §27150/§27151 violation: correctable 'fix-it' citation requiring muffler restoration and proof of correction; uncorrected becomes a standard infraction with bail schedule (~$193–$238 in San Bernardino County). Idling: CARB §2485 violation up to $300 per occurrence. Stationary off-road vehicle noise under CMC §9.40: $100 first / $200 second / $500 third administrative citation within 12 months.

Leaf Blower Rules

Chino has no leaf-blower–specific ban or hour restriction in its Municipal Code; leaf-blower operation is governed by the general exterior noise standards in CMC § 9.40.040 and by California state law. Under California AB 1346, the California Air Resources Board prohibits the sale of new gas-powered small off-road engines (SORE) — including most gas leaf blowers — beginning with model-year 2024.

Key details: Local hour restriction: None specific; subject to CMC § 9.40.040 (7 a.m.–10 p.m. daytime envelope). Decibel cap (daytime): 55 dBA L50 / 75 dBA Lmax at neighbor's property line. State rule: AB 1346 — new gas SORE sales banned starting MY 2024. Existing equipment: Continued use of pre-2024 gas blowers remains lawful. Quieter alternative: Battery-electric blowers typically 55–65 dBA at 50 ft.

Operating a leaf blower outside the 7 a.m.–10 p.m. daytime window, or at levels exceeding CMC § 9.40.040, is a CMC violation enforceable as a public nuisance. Selling or distributing new (model-year 2024+) gas-powered SORE in California violates CARB regulations adopted under AB 1346.

If you are coming from a city with tighter rules, you will find Chino gives residents more flexibility on leaf blower rules.

Construction Hours

Construction noise in Chino is exempt from the exterior decibel limits in CMC § 9.40.040 only when the work occurs within designated construction hours. The City of Chino General Plan Noise Element (Objective N-1.3, Policy P2) limits construction work near noise-sensitive uses to 7:00 a.m. to 7:00 p.m., and CMC Chapter 9.40 carries that limit through as the exemption window.

Key details: Permitted hours: 7:00 a.m. to 7:00 p.m.. Source authority: Chino General Plan Noise Element, Objective N-1.3 Policy P2. Exemption mechanism: CMC § 9.40 exempts construction within designated hours. Sunday/holiday rule: Same 7 a.m.–7 p.m. window applies; outside that window standard noise limits control. Typical construction noise: 80–90 dBA at 50 ft (per Chino GP EIR §4.10).

Construction outside 7 a.m.–7 p.m. that exceeds CMC § 9.40.040 limits is a public-nuisance infraction. Construction-related noise levels typically run 80–90 dBA at 50 feet (per General Plan EIR), well above the 70 dBA Lmax nighttime cap.

Decibel Limits

Chino Municipal Code §9.40.040 (Exterior Noise Standards) establishes maximum permitted noise levels at the receiving (residential) property line: 65 dBA during daytime hours (7 a.m. to 10 p.m.) and 55 dBA during nighttime hours (10 p.m. to 7 a.m.). Measurement is per §9.40.020: A-weighted scale, slow response, referenced to 20 micropascals, using a sound level meter that meets ANSI specifications. Noise sources in commercial and industrial zones must comply with the residential standard when measured at the nearest residential property line. The standard is exceeded when the level is exceeded for any 30 minutes in an hour; lower thresholds (typically 5 dBA below the base) apply for shorter cumulative durations (15 min, 5 min, 1 min, instantaneous).

Key details: Daytime exterior limit (residential): 65 dBA, 7 a.m.–10 p.m.. Nighttime exterior limit (residential): 55 dBA, 10 p.m.–7 a.m.. Measurement standard: CMC §9.40.020 — A-weighted, slow response, 20 µPa reference. Duration trigger: Standard violated if exceeded any 30 minutes in any hour. Pure-tone penalty: +5 dBA added to measured level.

Administrative citation under CMC §9.40: $100 first violation, $200 second, $500 each subsequent within 12 months (standard Chino administrative-citation tiers). Continued violations may be referred for misdemeanor prosecution under CMC general penalty provisions (CMC §1.16.010) — up to $1,000 fine and/or six months in county jail. Civil-nuisance remedies under Civil Code §3479 remain available.

Barking Dogs

Chino contracts with San Bernardino County Animal Care & Control for animal services (not the Inland Valley Humane Society, which serves neighboring Chino Hills). Continuous or habitual barking that exceeds the CMC § 9.40.040 decibel limits, or that constitutes a public nuisance under CMC Title 9, can be cited. San Bernardino County Code Title 3, Division 2 (Animal Control) prohibits keeping any animal whose noise disturbs the peace and quiet of any neighborhood.

Key details: Animal control provider: San Bernardino County Animal Care & Control (contracted). Applicable noise code: CMC § 9.40.040 (general noise) + County Code § 32.0301 et seq.. Nighttime barking cap: 50 dBA L50 at neighbor's property line. Complaint process: Log barking dates/times; multi-neighbor petition typically required. Not served by IVHS: Inland Valley Humane Society serves Chino Hills, not Chino.

Habitual barking can result in a County animal control citation, public-nuisance abatement under CMC Title 9, or escalating administrative fines. Owners may receive a written warning, followed by misdemeanor or infraction citations under San Bernardino County Code if barking continues.

Industrial Noise

Industrial noise in Chino is governed primarily by Chino Municipal Code Chapter 9.40 (NOISE), §9.40.040 Exterior Noise Standards, with measurement methodology fixed in §9.40.020 (A-weighted, slow response, reference 20 micropascals). Per the city's General Plan Noise Element and CMC, the baseline exterior noise standard applied at the receiving property line is 65 dBA. Industrial sources (M-1 Light Industrial and M-2 General Industrial zones, including The Preserve specific-plan industrial areas, Chino Industrial Park along Edison Ave / Pine Ave, and the Auto Center) must not cause noise at adjoining residential property lines exceeding the residential standard (65 dBA daytime 7 a.m.–10 p.m. / 55 dBA nighttime 10 p.m.–7 a.m.). Mechanical and electrical equipment at industrial sites (cooling towers, compressors, dust collectors) is independently regulated under CMC §§9.40.030–9.40.060. Title 20 Zoning performance standards layer in vibration, glare, and noise limits enforced at the time of site-plan review.

Key details: Primary code: Chino Municipal Code Chapter 9.40 NOISE — §§9.40.020 (measurement), 9.40.040 (exterior standards). Baseline exterior standard: 65 dBA (residential receiving zone). Day/night thresholds: Daytime 7 a.m.–10 p.m.; Nighttime 10 p.m.–7 a.m.. Equipment-specific limits: Mechanical/electrical equipment: CMC §§9.40.030–9.40.060. Worker exposure: Cal/OSHA 8 CCR §5095 (separate from CMC).

Administrative citation under CMC §9.40 for exceedance of exterior noise standard at receiving property line: typical fines $100 first offense, $200 second, $500 third within 12 months (Chino's standard administrative citation schedule). Industrial CUP holders also face conditions-of-approval enforcement, with permit revocation as the ultimate remedy. Civil nuisance actions under Civil Code §3479 remain available to neighboring property owners.

Outdoor Music

Amplified outdoor music in Chino is regulated by Chino Municipal Code Chapter 9.40 (NOISE) plus the City's special-event permitting process. Amplified sound that exceeds the §9.40.040 exterior noise standards (65 dBA daytime / 55 dBA nighttime at the nearest residential property line) is a violation unless covered by an exemption — most commonly a city-permitted special event, parade, or authorized public-park activity. Routine amplified music from a backyard party, restaurant patio, or event venue must comply with the standard. Chino updated its loud-party ordinance in 2019 to impose a flat-rate fine schedule for noise nuisance / disturbing-the-peace responses; subsequent responses to the same address within a defined period trigger escalating cost-recovery charges and may be assessed against the property owner.

Key details: Primary code: Chino Municipal Code Chapter 9.40 NOISE. Limit applied to amplified music: §9.40.040 exterior standards: 65 dBA day / 55 dBA night at residential property line. Special event permit: City Manager's Office / City Clerk — required for amplified events on public or private property open to the public. Typical event cutoff: 10 p.m. weekdays / 11 p.m. weekends (permit conditions). 2019 loud-party ordinance: Flat-rate response fee, escalating for repeat responses.

First response under the 2019 loud-party / noise ordinance: flat-rate response fee plus administrative citation (typically $100–$250). Repeat responses within the look-back period escalate fees and may be liened against the property. Unpermitted commercial outdoor entertainment is independently a Title 20 zoning violation (CUP-required use without permit): up to $1,000/day administrative citation, plus risk of CUP revocation hearing for licensed venues.

Aircraft Noise

Federal law (49 U.S.C. §§40103, 41713 and FAA regulations) preempts the City of Chino from regulating aircraft-in-flight noise. Operations at Chino Airport (KCNO) — a San Bernardino County-owned general aviation reliever airport along Merrill Avenue at the southern edge of the city — are governed by the FAA and the airport sponsor, not Chino Municipal Code §9.40. What Chino does regulate is the land-use side: under the Chino Airport Comprehensive Land Use Plan (ACLUP) administered through San Bernardino County's 'Alternative Process' (no formal ALUC; local jurisdictions handle compatibility planning), the City must notice development applications within adopted airport noise and safety zones and assure compatibility with Chino Airport operations. The CMC §9.40.040 exterior noise standards (65 dBA daytime / 55 dBA nighttime in residential zones) expressly do not apply to aircraft operations.

Key details: FAA preemption: 49 U.S.C. §§40103, 41713 — federal exclusive authority over aircraft in flight. Airport sponsor: San Bernardino County Department of Airports (KCNO). Local noise code exemption: Chino CMC §9.40 does not apply to aircraft operations. Compatibility plan: Chino Airport Comprehensive Land Use Plan (ACLUP), Alternative Process. CNEL contour requiring attenuation: 65 dB CNEL — interior 45 dB CNEL required per CBC §1207.

City code enforcement cannot cite aircraft operators for in-flight noise — complaints are referred to the FAA (Flight Standards District Office, Riverside FSDO) and the County airport sponsor. Land-use violations (e.g., building within an airport safety zone without ACLUP review) are enforced through Title 20 zoning citations; administrative citations up to $1,000/day for continuing zoning violations.

The rules around aircraft noise in Chino lean permissive, but that does not mean anything goes.

The Bottom Line

Compared to many U.S. cities, Chino 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.

This guide is based on Chino's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.