Hillsboro Tree Removal Permit & Ordinance Guide
Washington County, Oregon
Protected Tree Definition
Significant tree: 6 inches DBH or greater on development sites. Tree preservation required during land use review. Heritage and historic trees designated separately.
Heritage / Landmark Trees
Heritage trees designated for exceptional size, species, age, or community value.
Permit Requirements
Tree Preservation Plan and Tree Mitigation Plan required during land use applications. Tree removal permits for significant trees outside approved activity.
Who can apply: Property owner or authorized agent with arborist report
Required Report Sections
Tree inventory with DBH, species, condition, retention plan, mitigation calculation
Replacement Requirements
Inch-for-inch caliper mitigation or tree unit replacement
On-site replacement preferred; fee-in-lieu to tree fund when infeasible.
Fees & Fines
Processing Time
4-6 weeks
Required Certifications
ISA Certified Arborist
Municipal Code
Hillsboro Community Development Code Section 12.70 (Tree Preservation)
View full ordinanceContact
Planning Department
(503) 681-6153
Nearby Cities in Washington County
Other Oregon cities
Compare with nearby cities
Data last verified: April 2026. This information is provided as a reference. Always verify requirements directly with Hillsboro before submitting permits or reports.
Ready to apply? How to apply for a permit in Hillsboro →
See Oregon replacement obligations compared: How Hillsboro's replacement ratio ranks in Oregon →
See Oregon heritage criteria compared: How Hillsboro's heritage designation ranks in Oregon →
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