Tree removal permit rules: Gresham 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 Gresham ordinance page or the Lake Oswego ordinance page.

Side-by-side comparison

Field Gresham Lake Oswego
Protected tree definition Significant tree: 6 inches DBH or greater on development sites. Tree preservation standards apply during land use review. Heritage trees designated separately. 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 trees designated for exceptional size, species, age, or historical 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 Inch-for-inch caliper mitigation 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 4-6 weeks 3-6 weeks
Permit fee Not documented $220.00
Permitting department Urban Design and Planning Department Planning and Building Services
Municipal code View ordinance → View ordinance →

How they differ

Which city has stricter heritage tree protections, Gresham or Lake Oswego?
Both Gresham and Lake Oswego maintain heritage / landmark tree designations. Gresham: Heritage trees designated for exceptional size, species, age, or historical significance. Lake Oswego: Heritage Tree designation for exceptional size, species, age, or historical association.
Where is a tree removal permit processed faster, Gresham or Lake Oswego?
Gresham publishes a typical processing time of 4-6 weeks; Lake Oswego publishes 3-6 weeks. Compare each city's published timeline and plan removal accordingly — emergency-tree provisions may shorten the wait in either city.
Where are tree replacement obligations heavier, Gresham or Lake Oswego?
Gresham requires a replacement ratio of Inch-for-inch caliper mitigation. Lake Oswego requires a replacement ratio of Based on tree size category and reason for removal. Gresham: 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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