Tree Protection in Gresham, OR (2026)
3 verified tree protection rules for Gresham, Oregon, sourced directly from the municipal code and official government pages.
Verified from official government sources
Heritage & Protected Trees
Gresham designates individual trees or groves as Significant when they show distinctive size, beauty, historic association, or ecological value, adding them to a protected inventory the Urban Forestry Subcommittee maintains.
Gresham Significant Tree Designation Rules
Some RestrictionsGresham Community Development Code § 9.1052(A)
An individual tree may be considered Significant if it is apparently in a healthy growing condition and on of the following exist: 1. The tree has a distinctive size, shape, or location, or is of a distinctive species or age which warrants a Significant status; or 2. The tree possesses exceptional beauty which warrants a Significant status.
Protected Tree Species
Before a Gresham building or land-use permit disturbs ground near a Regulated, Required, or Significant tree, the developer must fence off a protection zone sized to the tree's trunk diameter.
Gresham Required Tree Protection Zones
Some RestrictionsGresham Community Development Code § 9.1031(B)
A Tree Protection Plan is required and shall designate as protected all Regulated, Required, and Significant Trees/Significant Groves that are to remain on the site after development is complete and other trees recommended for protection by the Certified Arborist preparing the plan, if a Certified Arborist is required below. The Tree Protection Plan shall show all required tree protection, but ...
Parkway Planting
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.
Gresham Street Tree Planting Standards
Some RestrictionsGresham Community Development Code § 9.1044(B)
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 s...
Looking for Multnomah County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Gresham city rules.
Tree Protection in Multnomah County →