Dearborn uses a combination of plainly-audible standards and zoning-based decibel limits, typically 60-65 dBA daytime and 50-55 dBA nighttime at residential property lines.
Dearborn enforces noise with both a subjective plainly-audible standard and objective decibel limits measured at property lines. In residential zones, the typical daytime limit is 60 dBA (7 AM to 10 PM) and 50 dBA at night. Commercial zones allow 65 dBA day and 55 dBA night. Industrial districts permit higher levels internally but must meet the receiving-zone limit at any boundary with residential or commercial property. Officers may use calibrated sound level meters for industrial or repeat complaints, while patrol-level calls rely on the plainly-audible test. Impulsive noises like pile driving or jackhammering have a 5 dBA correction applied. Medical and emergency equipment is exempt.
Contact your local code enforcement office for specific penalty information.
See how other cities in Wayne County handle decibel limits.
See how Dearborn's decibel limits rules stack up against other locations.
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