The Indianapolis noise ordinance, found in Chapter 391, Article III of the Revised Code of the Consolidated City of Indianapolis and Marion County, bans “unreasonable noise” at any hour and tightens the rules overnight. Between 10:00 p.m. and 7:00 a.m., sound that a person with normal hearing can plainly hear from outside your property is treated as automatic evidence of a violation. Construction has to stop even earlier, at 7:00 p.m. There are no fixed decibel limits. Fines start with a civil penalty for a first offense and climb to a $500 minimum for repeat violations within a year.
What Counts as Unreasonable Noise
Section 391-302 defines unreasonable noise as any sound whose volume, frequency, or pattern disrupts or endangers the health, comfort, or rest of a reasonable person of ordinary sensitivity, given the time of day and the setting. Context does real work here. A volume that reads as normal on a busy commercial block in the afternoon can still be unreasonable in a quiet residential area at the same hour.
For several categories of noise, the ordinance only treats the conduct as a violation once the person has been asked to stop and keeps going. Loud music, a car horn, shouting in the street, a barking dog: in each of these, asking the person to stop is part of what turns the behavior into a citable offense. That step matters if you’re the one complaining and if you’re the one being complained about.
Quiet Hours and the Plainly Audible Test
The overnight rule is stricter and more mechanical than the general standard. Between 10:00 p.m. and 7:00 a.m., operating a radio, television, loudspeaker, musical instrument, or amplifier in a way that is plainly audible from outside the property is automatic evidence of a violation. No decibel reading is needed and no subjective judgment about reasonableness has to be made. If a neighbor with normal hearing can hear it from off your property during those hours, that alone satisfies the standard.
The same automatic-evidence rule applies overnight to engines and motors operated without proper mufflers, and to steam whistles, when the sound carries past the property line. Vehicles with sound-amplifying equipment, such as ice cream trucks or mobile advertising, face a wider restricted window that runs from 10:00 p.m. to 10:00 a.m.
Construction Hours
Construction runs on a tighter clock than the general quiet-hours rule. Building construction, demolition, alteration, repair, and excavation are prohibited between 7:00 p.m. and 7:00 a.m. Heavy equipment such as pile drivers, pneumatic hammers, derricks, and steam or electric hoists follows the same 7:00 p.m. to 7:00 a.m. limit.
Two narrow exceptions exist. Overnight work can proceed if there is an urgent public health or safety need and the operator gets a permit from the division of construction and business services, which can be issued for up to three days and renewed once. The division of compliance can also approve overnight construction if it finds public health and safety will not be affected. Public utility emergency repairs are treated as their own exception for heavy equipment.
Noise in Public Streets and Public Places
Sound-producing devices operated in a public street or public place, rather than on private property, are governed by a distance test that applies at any hour. If the sound is plainly audible to a person with normal hearing from more than 75 feet away, that is automatic evidence of a violation. The same rule applies on buses and other public transit, with the only carve-out being earbuds or headphones.
Specific Activities the Ordinance Names
Section 391-302(c) spells out the categories enforcement officers most often work from:
- Radios, televisions, loudspeakers, instruments, amplifiers, and similar devices operated so loudly that they create unreasonable noise, once the operator has been asked to stop.
- Vehicle horns and alarms used in a public street in a way that creates unreasonable noise, once the operator has been asked to stop.
- Shouting, whistling, or singing in a public street or place that creates unreasonable noise, once the person has been asked to stop.
- Animals or birds that make unreasonable noise when the keeper fails to quiet them after being asked.
- Engines, motors, or vehicles with modified exhausts, including straight pipes, muffler cutouts, and bypasses, operated in a way that creates unreasonable noise. Muffler-bypass equipment is specifically prohibited in public streets. Scheduled races and sporting events, and construction, demolition, and maintenance equipment, are excepted.
- Trash pickup from any container larger than six cubic feet between 10:00 p.m. and 7:00 a.m. that is audible beyond the property line.
Permits for Events
Many of the specific restrictions include an exception for activity covered by a permit for a special occasion. Block parties, outdoor concerts, festivals, and similar events can apply through the city’s special events permitting process to temporarily authorize sound levels, shouting, engine noise, or steam whistles that would otherwise draw a citation. The city notes that the 10:00 p.m. to 7:00 a.m. quiet hours still function as a baseline, so late-night event requests can face additional scrutiny.
How to Report a Noise Complaint
Where you call depends on how urgent the situation is.
- 311 handles non-emergency noise complaints. Cell phone users in Marion County can dial it directly.
- The IMPD non-emergency line, 317-327-3811, is for active disturbances that need a police response but do not involve injury or property damage.
- The Mayor’s Action Center, 317-327-4622, takes ongoing or recurring complaints that need follow-up rather than an immediate dispatch. It operates Monday through Friday from 8:00 a.m. to 5:00 p.m.
- The RequestIndy online portal lets residents submit service requests and track their status.
When you call, give the exact address of the noise source, the time it started, and a description of what you’re hearing. For recurring problems like weekly late-night parties, a written log of dates and times strengthens the complaint. IMPD also takes reports about loud or speeding vehicles through a separate online traffic complaint form.
Fines and Penalties
Section 391-302(d) sets a graduated schedule. A first violation within any 12-month period goes through the city’s ordinance violations bureau, where the person cited can admit the violation and pay a civil penalty. A second violation within that same 12-month window carries a minimum fine of $250. Any further violation in the same window carries a minimum of $500.
Each day a continuing violation persists can be treated as a separate offense, so an unresolved noise source can generate stacking fines quickly. Ignoring citations can add court costs and lead to an injunction ordering the activity to stop.
What the Ordinance Cannot Reach
Some noise sources fall outside local authority. The federal Noise Control Act reserves regulation of interstate railroads and motor carriers to federal standards, and aircraft noise is governed by the Federal Aviation Administration. Routine train horns at crossings, engine noise from interstate trucking, and aircraft on normal approach and departure paths are not enforceable through the Indianapolis ordinance, even if the sound would otherwise meet the local definition of unreasonable.