Permit Types, Requirements, and Applications
A permit is required to remove a tree 6 inches in diameter at breast height (DBH) or greater. City’s Tree Removal Guide with instructions on how to measure DBH and more detailed information on tree removal permit types.
Tree Removal Permits
The Reference Table of Permit Types summarizes the tree permits, submittal requirements and fees.
Due to COVID-19 restrictions, you must e-mail the application to Trees@lakeoswego.city, or mail in the application to City of Lake Oswego Planning Department. PO Box 369 Lake Oswego, OR 97034.
Prior to conducting any development activities on a property including, but not limited to, clearing, grading, construction, excavation, or demolition work on any site, tree protection fencing is required to be installed around all trees potentially affected by the development. The applicant must submit a Tree Protection Permit Application and the fencing must be inspected by City staff before the permit is issued. A tree protection inspection may be required prior to issuance of a plumbing permit.
Tree protection inspection days and times for conducting the above noted inspections are as follows:
Mondays (1:00 pm – 4:00 pm)
Wednesdays (8:30 am – 11:30 am)
Fridays (1:00 pm – 4:00 pm)
Tree Removal Application - Application for Type I, Type II, Dead, Hazard, Emergency and Verification removal of non-invasive trees. For invasive trees see the Invasive Tree Removal Application below. Type II applications require the Type II Checklist and Public Notice below. The Tree Hazard Evaluation Form may be required for hazardous tree removal applications.
Tree Hazard Evaluation Form - Find a Tree Risk Assessor Qualified Arborist to determine if your tree is a high or extreme risk by searching with the International Society of Arboriculture's Find an Arborist tool.
Tree Protection Application Packet- Plumbing - Tree Protection Application for plumbing permits.
Tree Protection Application Packet- Demolition - Tree Protection Application for demolition and plumbing permits.
Tree Protection Application Packet- General - Tree Protection Application for all permits, other than demolition and plumbing.
Large Forested Tract Tree Removal Application - Application to remove trees from a site with at least 1 acre of continuous tree canopy.