Construction hours in Cook County, IL — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
Cook County regulates construction noise in unincorporated areas under Chapter 30, Article V. Construction activity is generally permitted during daytime hours. The County's building code (Chapter 102) requires compliance with noise provisions during building operations.
Construction and demolition work in unincorporated Cook County is subject to the noise provisions of Chapter 30, Article V. Construction that generates unreasonably loud noise during nighttime or early morning hours may result in enforcement action. The County's adopted International Building Code (2009 IBC as amended) under Chapter 102 governs building operations and requires contractors to minimize disturbance to adjacent properties. Cook County Building and Zoning issues permits and can impose conditions on construction activity. Properties must achieve compliance within 30 days of a violation notice per Section 102-105.
Construction noise violation: $100–$1,000 fine per offense. Stop-work order possible for repeated violations. Each day constitutes a separate offense.
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See how Cook County's construction hours rules stack up against other locations.
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