Tree removal permit rules in Cook County, IL — sometimes called heritage tree, protected tree, or street tree ordinances — list which trees require a permit before you can cut them down.
Cook County Chapter 126 requires tree removal permits for deciduous trees over 6 inches in diameter and evergreen trees 10+ feet tall on unimproved or partially improved land. A Tree Removal Application must be submitted to Building and Zoning.
The Cook County Tree Preservation, Landscaping and Screening Ordinance (Chapter 126) requires permits for removing trees on unimproved or partially improved land in unincorporated areas. Deciduous trees with a trunk diameter exceeding 6 inches (measured at 6 inches above ground) and evergreen trees 10 feet or taller in height require a removal permit. The Tree Removal Application is submitted to the Cook County Department of Building and Zoning. The permit process evaluates the necessity of removal and may require tree replacement. Removing protected trees without a permit results in heavy fines. The ordinance aims to safeguard environmental conservation and maintain the tree canopy in unincorporated Cook County. The Cook County Forest Preserve District separately manages trees on preserve land.
Tree removal without permit: heavy fines. Standard building violation: $100–$1,000 per offense. Tree replacement may be required.
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See how Cook County's tree removal & heritage trees rules stack up against other locations.
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