3 county-level rules, plus city-specific rules for 1 city in Arapahoe County, Colorado.
Verified from official government sources
Aurora City Code §94-350 requires permits to remove public trees (right-of-way); private property trees over 12 inches DBH may require review. Centennial has street tree protections through public works. Cherry Hills Village strictly protects mature trees. Unincorporated Arapahoe County has limited tree regulations.
Arapahoe County does not have a formal heritage tree program, but Aurora's Forestry Division and Cherry Hills Village protect significant specimen trees. The Colorado Tree Coalition maintains a Champion Tree registry. Mature cottonwoods in Cherry Creek corridor receive informal preservation through landscape review.
Aurora, Centennial, and Cherry Hills Village require replacement of permitted tree removals in public right-of-way and subdivisions. Replacement ratios 1:1 to 3:1 with 2-inch caliper minimum. Colorado native and drought-tolerant species preferred. Fee-in-lieu to city tree fund permitted.
1 cities in Arapahoe County have their own tree protection rules. Each link goes to that city's dedicated page with code citations.
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