Gresham, OR Tree Protection: Parkway Planting (2026)
Key Facts
- Trees per frontage
- 1 per 35 feet
- Minimum caliper
- 1.75 inches
- Tree spacing
- 20 feet minimum apart
- Clearance from crosswalk
- 12 feet
Summary
New Gresham development must include one street tree for every 35 feet of frontage, each at least 1.75 inches in caliper and spaced no closer than 20 feet apart in the planter strip.
Street Trees of a minimum 1.75-inch caliper are required when a land use or building permit requires street trees. 1. The number and separation of required street trees shall meet the following standards:
City of Gresham Development Code
[9.1000]-15
(06/26)
a. Number: On all street classifications, one street tree shall be required for every 35 feet of frontage for the development site. When a development site contains more than 10 feet and less than 35 feet of frontage on any street, a minimum of 1 street tree per lot, including middle housing lots, shall be planted. For the purpose of Section 9.1044 the measurement shall be taken along right-ofway frontage but not through curb returns at intersections.
b. Street Tree Separation: Trees shall be placed a minimum of 20 feet apart. The separation requirement may be modified by the Manager.
Full Breakdown
A Street Tree plan must be submitted with any building permit, partition, subdivision, planned development, or design review application. Required street trees must come from the City's Approved Tree List, be spaced at least 15 feet from streetlights and stormwater catch basins, 5 feet from driveway cuts, and kept clear of the 12 feet nearest a crosswalk at intersections. Where site constraints make planting infeasible, the Manager may approve a fee-in-lieu contribution to the City's tree fund instead, set by Council resolution.
Violations & Fines
Developing without the required Street Tree plan, or planting outside the approved species list and spacing standards, is a Development Code violation enforceable through the City's permit process.
Frequently Asked Questions
How many street trees does a new Gresham home need?
Can I plant any tree species along the street?
Sources & Official References
Other rules in Gresham
Compare Gresham to another location·View the Oregon tree protection overview
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Parkway Planting in Nearby Cities
How other cities in Multnomah County handle parkway planting.