Denver, CO Tree Protection: Protected Tree Species (2026)
Key Facts
- Protected size threshold
- 6-inch trunk diameter, 4.5 ft up
- Applies during
- residential demolition or construction only
- Permit issuer
- city forester
- Violation remedy
- replacement or full appraised-value payment
Summary
Before residential demolition or construction, Denver requires a city forester permit to remove any 'established tree', six inches or wider in trunk diameter, standing in a required setback area.
As provided in section 57-20(c), certain established trees shall not be removed during the course of residential demolition or construction unless the responsible party obtains a permit for removal of the tree from the city forester. The city forester shall issue such a permit only upon a finding that: (1) The tree is irreparably damaged, diseased, dying or dead; (2) The tree poses a threat to public health and safety; or (3) The tree is of a type the city forester has determined by regulation to be undesirable or a nuisance species.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 147 Update 3).
Full Breakdown
Denver Revised Municipal Code § 57-25 protects established trees, self-supporting woody plants with at least a 6-inch trunk diameter measured 4.5 feet above ground, standing in the front or street-side setback of single-, two-, or multi-unit residential zone lots. A responsible party may not injure, destroy, or remove one during demolition or construction without a city forester permit, issued only if the tree is irreparably damaged, hazardous, a nuisance species, or leaves the property with no buildable area wider and taller than 15 feet. Owners must also fence and protect surviving trees throughout construction under § 57-25(c).
Violations & Fines
Removing a protected established tree without a permit lets the city forester order replacement or payment of the tree's full appraised value, enforceable as a property lien under §§ 57-27–57-28.
Frequently Asked Questions
What makes a tree 'established' under Denver's code?
Can I cut down a protected tree during a home remodel?
Sources & Official References
Other rules in Denver
Compare Denver to another location·View the Colorado tree protection overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.