Cook County Chapter 126 requires permits for removing deciduous trees over 6 inches in diameter and evergreens over 10 feet tall on unimproved/partially improved land. Tree Removal Application submitted to Building and Zoning.
The Cook County Tree Preservation, Landscaping and Screening Ordinance (Chapter 126) requires permits for tree removal on unimproved or partially improved land in unincorporated areas. Deciduous trees with trunk diameter exceeding 6 inches (measured at 6 inches above ground) and evergreen trees 10 feet or taller require a Tree Removal Application submitted to the Department of Building and Zoning. The Commissioner of Building and Zoning oversees tree preservation matters. Permit applications must include site plans showing trees to be removed and any proposed replacement plantings. The ordinance aims to safeguard environmental conservation and maintain tree canopy in unincorporated Cook County. Removal without a permit results in heavy fines and potential tree replacement requirements.
Unpermitted tree removal: heavy fines ($100–$1,000+ per offense). Tree replacement may be required. Each removed tree may constitute a separate violation.
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