Key Facts Full Breakdown Violations FAQ Sources

Multnomah County, OR Landscaping Rules: Tree Trimming (2026)

Some Restrictions

Verified 1 month ago|Source: City of Hillsboro →

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Key Facts

Private Property Trimming: No permit required for standard conditions outside sensitive areas
Road Overhang: Property owners must maintain safe clearance for county roads
Sensitive Areas: Floodplain/habitat/steep slope trees may need county approval
Tree Removal Info: multco.us/info/tree-removal-and-revegetation

City-specific rules exist: Portland, Troutdale, and Gresham have their own tree trimming rules that differ from Multnomah County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Summary

In unincorporated Multnomah County, trees on private property generally do not require permits for trimming. Trees overhanging county roads must be maintained for safe clearance. Trees in sensitive areas (floodplain, habitat, steep slopes) may require special approval.

Full Breakdown

Unincorporated Multnomah County does not require permits for trimming or removal of trees on private property outside sensitive land areas. Trees that overhang county-maintained roads must be maintained by the property owner to ensure safe clearance for traffic — Multnomah County Land Use and Transportation can require owners to trim overhanging branches. Trees in floodplains, steep slope areas, significant habitat areas, or other environmentally sensitive zones may require county approval before removal or major trimming. Contact Multnomah County Land Use Planning: 503-988-3043.

Violations & Fines

Unauthorized removal of protected trees: $500 to $10,000+ per tree. Replacement planting required.

Frequently Asked Questions

Can I trim tree branches that hang over my property in Multnomah County?

Do I need a permit to trim trees in Multnomah County?

Private Property Trimming: No permit required for standard conditions outside sensitive areas. Road Overhang: Property owners must maintain safe clearance for county roads. Sensitive Areas: Floodplain/habitat/steep slope trees may need county approval. Tree Removal Info: multco.us/info/tree-removal-and-revegetation.

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Multnomah County, OR Landscaping Rules: Tree Trimming (2026)

Key Facts

Summary

Full Breakdown

Violations & Fines

Frequently Asked Questions

Sources & Official References

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