Lake Oswego Tree Removal Permit & Ordinance Guide
Clackamas County, Oregon
Protected Tree Definition
Regulated tree: 5 inches DBH or greater on most properties. Heritage trees designated separately for exceptional significance. Sensitive Lands overlay adds additional restrictions.
Heritage / Landmark Trees
Heritage Tree designation for exceptional size, species, age, or historical association.
Permit Requirements
Tree Cutting Permit required for removal of regulated trees on private property. Type II review for larger projects.
Who can apply: Property owner or authorized agent with arborist report
Required Report Sections
Tree inventory, species, DBH, condition, justification for removal, mitigation plan
Replacement Requirements
Based on tree size category and reason for removal
On-site replacement with minimum caliper standards; in-lieu fee available.
Fees & Fines
- Permit fee
- $220.00
Processing Time
3-6 weeks
Required Certifications
ISA Certified Arborist
Municipal Code
Lake Oswego Code Chapter 55 (Tree Code)
View full ordinanceContact
Planning and Building Services
(503) 635-0290
planning@lakeoswego.cityNearby Cities in Clackamas County
Other Oregon cities
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Data last verified: April 2026. This information is provided as a reference. Always verify requirements directly with Lake Oswego before submitting permits or reports.
Ready to apply? How to apply for a permit in Lake Oswego →
See Oregon permit fees compared: How Lake Oswego's $220.00 fee ranks in Oregon →
See Oregon replacement obligations compared: How Lake Oswego's replacement ratio ranks in Oregon →
See Oregon heritage criteria compared: How Lake Oswego's heritage designation ranks in Oregon →
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