Tree removal permit rules: Beaverton vs Lake Oswego, Oregon

A side-by-side comparison drawn from each city's tree-protection ordinance. For the underlying full ordinance text, see the Beaverton ordinance page or the Lake Oswego ordinance page.

Side-by-side comparison

Field Beaverton Lake Oswego
Protected tree definition Significant tree: 10 inches DBH or greater. Heritage trees designated separately. Tree preservation required during development. 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, or community significance. Heritage Tree designation for exceptional size, species, age, or historical association.
Who can apply Property owner or authorized agent with arborist report Property owner or authorized agent with arborist report
Replacement ratio Based on retention percentage and mitigation standards Based on tree size category and reason for removal
Replacement details On-site replacement preferred; fee-in-lieu to tree fund when infeasible. On-site replacement with minimum caliper standards; in-lieu fee available.
Typical processing time Not documented 3-6 weeks
Permit fee Not documented $220.00
Permitting department Community Development Department Planning and Building Services
Municipal code View ordinance → View ordinance →

How they differ

Which city has stricter heritage tree protections, Beaverton or Lake Oswego?
Both Beaverton and Lake Oswego maintain heritage / landmark tree designations. Beaverton: Heritage Tree designation for exceptional size, species, or community significance. Lake Oswego: Heritage Tree designation for exceptional size, species, age, or historical association.
Where is a tree removal permit processed faster, Beaverton or Lake Oswego?
Lake Oswego publishes a typical processing time of 3-6 weeks. Beaverton does not publish a typical processing time, so confirm the current turnaround directly with Beaverton's permitting department.
Where are tree replacement obligations heavier, Beaverton or Lake Oswego?
Beaverton requires a replacement ratio of Based on retention percentage and mitigation standards. Lake Oswego requires a replacement ratio of Based on tree size category and reason for removal. Beaverton: On-site replacement preferred; fee-in-lieu to tree fund when infeasible. Lake Oswego: On-site replacement with minimum caliper standards; in-lieu fee available.

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