Tree Code

The purpose of the Tree Code is to preserve the wooded character of the City of Lake Oswego and to protect trees as a natural resource of the City by:

  • Regulating the removal of trees;
  • Encouraging and assisting property owner in managing large forested properties; and
  • Prescribing preventative protection measures to avoid damage to trees during site development.

News & Announcements

Tree Care and Maintenance

The City’s contract arborist prepares tree maintenance and care articles quarterly that contain seasonal tips and advice on caring for your trees. The topic for Winter 2020 is Tree Planting: To Stake or Not to Stake? More seasonal tree care topics are also available in the Tree Care and Maintenance Archives link below the article.

Read More about Tree Care and Maintenance
Tree Code Frequently Asked Questions

Find answers to many frequently answered questions.

Read More about Tree Code Frequently Asked Questions
Contact Information

Until further notice, the Permit Center is closed to walk-in customers. Please email Trees@lakeoswego.city or call 503-635-0290 and ask for the Planner on Duty if you have questions.

Submitting a Tree Removal or Tree Protection Application

Please email a pdf copy of your tree application to Trees@lakeoswego.city. After processing the application, staff will contact you by phone to collect credit card payment for the permit fee. Currently we are accepting payment by credit or debit card only.

Returning Yellow Type II Notice Signs 

After you have received your Type II tree permit, please return your yellow tree signs to our drop off location in the parking garage below City Hall. As you pull into the garage, there is a blue recycling bin on your right side (east) that you can drop your sign in. Thank you for returning your sign for reuse!

Quick Links
Application FormsPending Type II Permits