Des Plaines's Noise Ordinances: The Rules That Matter

Every city handles noise ordinances a little differently. In Des Plaines, Illinois, there are 6 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

Des Plaines City Code 6-2-7(E)(3) sets quiet hours from 10:00 P.M. to 7:00 A.M. on weeknights, and from 11:00 P.M. to 10:00 A.M. before Saturdays, Sundays, and official city holidays. During quiet hours, sound crossing a lot line above 50 dBA (or 40 dBA inside another structure) is excessive noise.

Key details: Code Section: Des Plaines City Code 6-2-7(E)(3)-(4). Weeknight quiet hours: 10:00 P.M. - 7:00 A.M.. Pre-weekend/holiday quiet hours: 11:00 P.M. - 10:00 A.M.. Nighttime lot-line limit: 50 dBA (40 dBA inside another structure). Enforcement: Trained Des Plaines Police using ANSI sound meter.

Violators are fined under the general penalty in City Code Title 1, Chapter 4, for each offense (6-2-7(G)).

This is not one of those rules that cities tend to ignore. Des Plaines actively enforces its quiet hours requirements.

Aircraft Noise

No Des Plaines-specific ordinance regulates aircraft noise; City Code 6-2-7(B)(1)(f) expressly exempts aircraft operated under federal law, and aircraft-in-flight noise is preempted by the federal government (FAA). Des Plaines lies under O'Hare International Airport approach paths governed by the federal/ONCC noise program.

Key details: Code Section: Des Plaines City Code 6-2-7(B)(1)(f) (aircraft exemption). Preemption: Federal (FAA / Noise Control Act of 1972; 49 U.S.C. 40103, 47524). Nearby airport: Chicago O'Hare International (ORD), adjacent to Des Plaines. Complaint channel: O'Hare Noise Compatibility Commission (ONCC) / Fly Quiet program. City rule: Aircraft operated under federal law are exempt from local noise limits.

Not applicable at the city level; aircraft operations are regulated and enforced federally by the FAA. City Code 6-2-7(B)(1)(f) exempts compliant aircraft from local noise penalties.

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

Amplified Music & Outdoor Sound

Des Plaines City Code 6-2-7(F) makes it unlawful to operate any sound-production or amplification device whose sound crosses a property line and raises total sound on another property above the neighborhood residual level by more than 3 dBC during quiet hours or 6 dBC at all other times, measured inside a complainant's residence.

Key details: Code Section: Des Plaines City Code 6-2-7(F). Quiet-hours limit: 3 dBC above neighborhood residual sound level. Other-times limit: 6 dBC above neighborhood residual sound level. Measurement: C-weighting, 'fast' response, inside complainant's residence. Stacks with general limits: Also subject to 6-2-7(E) dBA thresholds.

Violators are fined under the general penalty in City Code Title 1, Chapter 4, for each offense (6-2-7(G)).

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

Vehicle Noise

Des Plaines City Code 6-2-7(E) applies its dBA limits to vehicles and equipment on the public right of way (excessive at 65 dBA daytime / 50 dBA quiet hours more than 30 feet away), while vehicles on state roads and interstates are exempt (6-2-7(B)(1)(g)) and governed by Illinois Vehicle Code muffler law.

Key details: Code Section: Des Plaines City Code 6-2-7(E)(4)(b), (E)(5)(b); 6-2-7(B)(1)(g). Right-of-way limit: 65 dBA daytime / 50 dBA quiet hours, more than 30 ft from source. State-road exemption: Vehicles on state roads/interstates exempt from local ordinance. State muffler law: 625 ILCS 5/12-602 (adequate muffler; no cutouts/amplified exhaust). Enforcement: Des Plaines Police Department.

City noise penalties under Title 1, Chapter 4 for right-of-way violations (6-2-7(G)); state muffler/exhaust violations are petty offenses under 625 ILCS 5/12-602 enforced by police.

Construction Hours

Des Plaines City Code 6-2-7(B)(1)(b) exempts construction, demolition, and property-improvement work from the noise ordinance only when performed 7:00 A.M.-7:00 P.M. Monday through Saturday, and 10:00 A.M.-6:00 P.M. on Sundays and official city holidays. Work outside those windows is subject to the excessive-noise limits.

Key details: Code Section: Des Plaines City Code 6-2-7(B)(1)(b). Mon-Sat hours: 7:00 A.M. - 7:00 P.M.. Sun/holiday hours: 10:00 A.M. - 6:00 P.M.. Covered activities: Grading, excavation, demolition, repair, landscaping, deliveries, heavy-vehicle idling. Variance: City Council may grant by resolution after public review (6-2-7(B)(2)).

Work outside the exempt hours is subject to the noise penalty in City Code Title 1, Chapter 4, for each offense (6-2-7(G)).

Barking Dogs

Des Plaines City Code 6-1A-11 (Disturbing the Peace) prohibits keeping any animal that by barking, meowing, or other noise constantly disturbs the peace of a family, individual, or neighborhood, and a dog left outdoors barking excessively three or more times in 24 hours may be impounded at the owner's expense.

Key details: Code Section: Des Plaines City Code 6-1A-11 (Disturbing the Peace). Standard: Animal noise that constantly disturbs the peace of a family or neighborhood. Impoundment trigger: Dog barking excessively 3+ times in 24 hours, owner absent/uncontactable. State overlay: Illinois Animal Control Act, 510 ILCS 5/. Enforcement: Des Plaines Animal Control / Police Department.

Impoundment of a habitually barking dog at the owner's expense under 6-1A-11, plus general penalties under City Code Title 1, Chapter 4.

The Bottom Line

Des Plaines is tougher than many cities when it comes to noise ordinances. Out of the 6 rules covered here, 2 are rated strict. If you are a homeowner, renter, or business owner in Des Plaines, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

All of the above reflects Des Plaines's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.