How Portland Handles Tree Protection: A Practical Guide
Portland maintains 144 local ordinances across all categories, and 2 of those deal specifically with tree protection. Here is a breakdown of what the city actually requires, what is prohibited, and where Portland falls on the strict-to-permissive spectrum compared to other cities.
Parkway Planting
Portland requires new development and street-improvement projects to plant one street tree for every 25 feet of frontage in the public right-of-way, reviewed under City Code Title 11's street tree planting standards.
Key details: Planting rate: 1 tree per 25 ft frontage. Small-project exemption: under $25,000 in value. Cost cap: 10% of development value. Alternative: fee in lieu of planting. Sets species/location: City Administrator (Urban Forestry).
When the required number of street trees can't physically be planted, the developer must instead pay a fee in lieu of planting into the Tree Planting and Preservation Fund under § 11.15.010.
Heritage & Protected Trees
Portland designates Heritage Trees by City Council action, and removing, pruning, or injuring one without written authorization from the City Administrator is unlawful.
Key details: Governing body: Urban Forestry Commission + City Council. Designation basis: Age, size, historical or horticultural value. Private tree consent: Owner consent required, recorded on deed. Removal without consent: Unlawful without written authorization. Removal vote threshold: 6 of 11 UFC members.
Removing, pruning, or injuring a designated Heritage Tree without prior written City Administrator authorization is unlawful under § 11.20.060(H); removal otherwise requires Urban Forestry Commission consent following a public hearing.
This is one of the stricter rules in Portland's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.
The Bottom Line
Portland's tree protection rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Portland is broadly strict or permissive.
This guide is based on Portland's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.