How Denver Handles Tree Protection: A Practical Guide

Denver maintains 204 local ordinances across all categories, and 5 of those deal specifically with tree protection. Here is a breakdown of what the city actually requires, what is prohibited, and where Denver falls on the strict-to-permissive spectrum compared to other cities.

Protected Tree Species

DRMC chapter 57 makes the Denver City Forester responsible for all trees in public rights-of-way and parks. Removal, pruning, or planting of street trees requires a Denver Forestry permit. Approved species list emphasizes climate-resilient, drought-tolerant, non-ash varieties.

Key details: Right-of-way trees: City property. Lead agency: Denver City Forester. Permit required: All street tree work. Banned species: Ash and others.

Unpermitted street-tree removal violates DRMC §57-43 with fines up to $999 plus replacement-cost restitution, often $1,000-$10,000 for a mature tree. Damaging a city tree during construction triggers tree-protection penalties under chapter 57 plus possible building-permit suspension.

This is one of the stricter rules in Denver's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

Tree Removal Permits

Denver requires permits for the removal of any tree on public property and trees in the public right-of-way under DRMC Chapter 57 (Vegetation) and the Denver Forestry Rules. The Office of the City Forester manages the tree permit program. Trees on private property may also require permits depending on size and the development context.

Key details: Governing Code: DRMC Chapter 57 (Vegetation). Permit Authority: Office of the City Forester. Permit Fee: Free for public tree permits. Tree Topping: Illegal in Denver. Penalty: Up to $999 per tree.

Removing a public tree without a permit is a violation of DRMC Chapter 57 with fines up to $999 per tree. Tree topping carries penalties and may require corrective pruning or replacement. Unauthorized removal of street trees can result in replacement requirements at significant cost. Developers who remove trees without required permits face stop-work orders and replacement mandates.

Compared to other cities, Denver takes a harder line on tree removal permits. The enforcement and penalty structure reflects that.

Tree Replacement Requirements

Denver requires tree replacement when public or right-of-way trees are removed, and often during development that impacts existing trees. The Office of the City Forester sets replacement species lists and standards. Denver's urban tree canopy goal drives replacement requirements to maintain and expand the city's tree cover.

Key details: Governing Code: DRMC Chapter 57. Minimum Caliper: 2 inches for deciduous replacements. Evergreen Minimum: 6 feet tall. In-Lieu Option: Payment to city tree planting fund. Warranty Period: Typically 2 years.

Failure to replace trees as required by the City Forester or development conditions violates DRMC Chapter 57. The city may withhold certificates of occupancy until replacement trees are planted. Trees that die within a warranty period (typically 2 years) must be replaced again at the property owner's expense.

Heritage & Protected Trees

Denver protects significant trees through the Office of the City Forester under DRMC Chapter 57. While Denver does not have a formal 'heritage tree' registry identical to some cities, the city protects notable, mature, and specimen trees on public property and during development review. Large-diameter trees receive additional scrutiny before removal is approved.

Key details: Governing Code: DRMC Chapter 57. Authority: Office of the City Forester. Formal Registry: No formal heritage tree registry. Protection Trigger: Large diameter, significant specimens. Replacement: Required for removal during development.

Removing a protected or significant public tree without City Forester approval violates DRMC Chapter 57. Penalties include fines up to $999 per tree and mandatory replacement at ratios that may exceed 1:1 for significant specimens. Damaging protected trees during construction can result in stop-work orders and replacement costs assessed at full appraised tree value.

Compared to other cities, Denver takes a harder line on heritage & protected trees. The enforcement and penalty structure reflects that.

Tree Ordinances

Denver protects public trees through the Denver Revised Municipal Code. The city forestry division manages street trees and trees in the public right-of-way. Private tree removal on residential lots generally does not require a city permit unless the tree is in the right-of-way.

Key details: Governing Code: DRMC Chapter 57 (Parks & Parkways). Public Trees: Protected — City Forester authorization required. Private Trees: Generally no permit needed on residential lots. Authority: Office of the City Forester / Parks & Recreation.

Unauthorized removal of or damage to public trees can result in fines, required replacement plantings at the city's specified ratio, and liability for the appraised value of the tree.

The Bottom Line

Denver is tougher than many cities when it comes to tree protection. Out of the 5 rules covered here, 3 are rated strict. If you are a homeowner, renter, or business owner in Denver, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

All of the above reflects Denver's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.