How to apply for a tree removal permit in Lake Oswego, Oregon

A 5-step walkthrough drawn from Lake Oswego's tree-protection ordinance. For the underlying DBH thresholds, protected-species list, and full fee schedule, see the city ordinance page.

Expected processing time: 3-6 weeks. Plan removal timing accordingly — emergency-tree provisions may differ.

  1. 1

    Determine if your tree is regulated

    Trees at or above 5" DBH (diameter at breast height) are regulated. Regulated tree: 5 inches DBH or greater on most properties. Heritage trees designated separately for exceptional significance. Sensitive Lands overlay adds additional restrictions. Heritage / landmark designation: Heritage Tree designation for exceptional size, species, age, or historical association.

  2. 2

    Determine who must apply

    Eligible applicants in Lake Oswego: Property owner or authorized agent with arborist report.

  3. 3

    Prepare your assessment report

    Your assessment report must include: Tree inventory, species, DBH, condition, justification for removal, mitigation plan. Required certifications: ISA Certified Arborist.

  4. 4

    Submit to the permitting department

    Submit your application and assessment report to Planning and Building Services. Permit fee: $220.00. Typical processing time: 3-6 weeks. Reference the full ordinance at https://www.ci.oswego.or.us/planning/tree-code.

    View the full Lake Oswego ordinance

  5. 5

    Plan for replacement obligations

    Replacement ratio: Based on tree size category and reason for removal. On-site replacement with minimum caliper standards; in-lieu fee available.

Where to file

Planning and Building Services

(503) 635-0290

planning@lakeoswego.city

Other Oregon permit walkthroughs

See Oregon permit fees compared — Lake Oswego's $220.00 fee in context.

See Oregon replacement obligations compared — how Lake Oswego's replacement ratio ranks against the rest of the state.

See Oregon heritage criteria compared — how Lake Oswego's designation rules stack against the rest of the state.

Compare with nearby cities

Need an arborist report for your Lake Oswego permit?

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

Start a TRAQ assessment