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Coconino County, AZ Tree Protection: Heritage & Protected Trees (2026)

Heavy Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified July 2026

Key Facts

Approach
Forest protected as system
Highest Priority
Ponderosa 18"+ DBH
Method
Point-based survey threshold
Goal
Reduce wildfire risk

Summary

Flagstaff does not use a classic heritage-tree list; instead its Resource Protection Standards safeguard the ponderosa pine forest as a natural resource, prioritizing the largest pines and requiring protection plans on development sites.

These county ordinances apply to unincorporated areas of Coconino County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

This division provides standards for the protection of natural resources, including floodplains, steep slopes, and forest.

Source: Arizona Revised StatutesView official code

Full Breakdown

Rather than designating individual landmark trees, Flagstaff protects its forest as a system. The Resource Protection Standards (Zoning Code Division 10-50.90) rate forest resources on a point system and set thresholds for how much must be retained, giving highest priority to large ponderosa pines, those 18 inches DBH or more, plus native tree stands and forest connected to floodplains and steep slopes. A stated goal is managing healthy, sustainable forests to reduce fire risk. Coconino County likewise weighs forest resources in development review. Large trees on development sites cannot simply be cleared without a plan and mitigation.

Violations & Fines

Removing high-priority forest or large ponderosa on a Flagstaff development site without an approved resource-protection plan triggers mitigation, replanting, and code enforcement under Division 10-50.90.

Frequently Asked Questions

Does Flagstaff have heritage or landmark trees?
Not in the traditional single-tree sense. Flagstaff instead protects the ponderosa forest as a resource, prioritizing the largest pines and requiring protection plans and mitigation on development sites.
Which trees get the most protection?
The largest ponderosa pines, 18 inches in diameter or more, along with native tree stands and forest connected to floodplains and steep slopes, under Flagstaff's point-based resource survey.

Sources & Official References

Other rules in Coconino County

All Coconino County rules

Compare Coconino County to another location·View the Arizona tree protection overview

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