Tippecanoe County, IN Noise Ordinances: Decibel Limits (2026)
Key Facts
- Residential daytime limit
- 55 dBA (7am-9pm)
- Residential nighttime limit
- 45 dBA (9pm-7am)
- Commercial land use limit
- 60 dBA
- Industrial zone boundary limit
- 65 dBA
- Short exceedance allowed
- +10 dBA, up to 15 min/day
- Fine per violation
- $50-$1,500, each day separate
Summary
Tippecanoe County's Unified Zoning Ordinance sets numeric noise ceilings by land use in Section 4-10-6: 55 dBA by day and 45 dBA at night at any residential zone line, 60 dBA at commercial land uses, and 65 dBA across an I1, I2 or I3 industrial zone boundary, measured with an ANSI-standard, A-weighted sound level meter.
4-10-6 NOISE: (a) Noise shall be measured in decibels with a sound level meter meeting the latest standards of the American National Standards Institute (ANSI). The instrument shall be set to the A-weighting scale and the meter to slow response. (b) The table in 4-10-6-b-1 below specifies noise limits that apply on or beyond adjacent lot lines or zone boundaries outside the user's property. Noises shall not exceed the maximum sound levels specified in the table... CATEGORY A: 55/45(1) On adjacent rural and residential land uses. CATEGORY B: 60 On adjacent commercial land uses. CATEGORY C: 65 Across I1, I2 or I3 zone boundary line. FOOTNOTES TO 4-10-6-b-1: 1 In any residential zone, the maximum permitted sound level shall not exceed 55 dbA between 7:00am and 9:00pm and 45 dbA between 9:00pm and 7:00am. (c) The levels specified in 4-10-6-b-1 above may be exceeded by 10 dbA for a single period, no longer than 15 minutes, in any one day.
Full Breakdown
Section 4-10-6, NOISE, is an industrial performance standard measured "with a sound level meter meeting the latest standards of the American National Standards Institute (ANSI)," set to the A-weighting scale with the meter on slow response, using the latest ANSI method. The Table of Noise Limits at 4-10-6-b-1 sets three tiers applying "on or beyond adjacent lot lines or zone boundaries outside the user's property": Category A covers adjacent rural and residential land uses, Category B covers adjacent commercial land uses at 60 dBA, and Category C covers the boundary of an I1, I2 or I3 industrial zone at 65 dBA.
m. Where more than one specified sound level could apply to a site, the most restrictive number governs, and readings must be taken at the point of maximum noise intensity, not an average location. Section 4-10-6(c) allows a single, short-duration exceedance: any of the table's limits may be exceeded by 10 dBA for one period per day, capped at 15 minutes. Impact noises, meaning peaks more than 6 dBA above the meter's indicated value, get an extra 20 dBA allowance under 4-10-6(d), while noise from independent transportation not under the direct control of the industrial operation is excluded entirely.
Violations & Fines
A source that exceeds its category's decibel ceiling, or the nighttime 45 dBA residential cap, without qualifying for the 10 dBA short-duration or impact-noise allowances is a zoning violation under Section 6-3-1. The operator faces a fine of $50 to $1,500 per violation determination, with each day the excess noise continues counted as a separate violation, plus possible attorney's fees and litigation costs recoverable by the Administrative Officer or Area Board of Zoning Appeals.
Frequently Asked Questions
What is the nighttime noise limit near homes in Tippecanoe County?
How loud can a commercial or industrial use be at its property line?
Can a noise level briefly exceed the table's decibel limits?
Sources & Official References
Other rules in Tippecanoe County
Compare Tippecanoe County to another location·View the Indiana noise ordinances overview
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