Tree removal permit rules: Gresham vs Hillsboro, 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 Hillsboro ordinance page.

Side-by-side comparison

Field Gresham Hillsboro
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. 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 historical significance. Heritage trees designated for exceptional size, species, age, or community value.
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 Inch-for-inch caliper mitigation or tree unit replacement
Replacement details On-site replacement preferred; fee-in-lieu to tree fund when infeasible. On-site replacement preferred; fee-in-lieu to tree fund when infeasible.
Typical processing time 4-6 weeks 4-6 weeks
Permit fee Not documented Not documented
Permitting department Urban Design and Planning Department Planning Department
Municipal code View ordinance → View ordinance →

How they differ

Which city has stricter heritage tree protections, Gresham or Hillsboro?
Both Gresham and Hillsboro maintain heritage / landmark tree designations. Gresham: Heritage trees designated for exceptional size, species, age, or historical significance. Hillsboro: Heritage trees designated for exceptional size, species, age, or community value.
Where is a tree removal permit processed faster, Gresham or Hillsboro?
Gresham publishes a typical processing time of 4-6 weeks; Hillsboro publishes 4-6 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 Hillsboro?
Gresham requires a replacement ratio of Inch-for-inch caliper mitigation. Hillsboro requires a replacement ratio of Inch-for-inch caliper mitigation or tree unit replacement. Gresham: On-site replacement preferred; fee-in-lieu to tree fund when infeasible. Hillsboro: On-site replacement preferred; fee-in-lieu to tree fund when infeasible.

Filing in Gresham or Hillsboro?

Capture an ISA TRAQ Level 1, 2, or 3 assessment in the field and export a municipality-ready PDF that fits each city's required report sections. Free, no account required.

Start a TRAQ assessment