Chemical Treatment Tree Permits

When Is a Permit Required?

See Chemical Treatment Permits FAQ for more details. 

• Street trees: A permit is required for chemical treatment.
• Private trees: No permit is required for chemical treatment.

Fill Out Application

Need Help Using Electronic Documents?

Submit application via Development Hub, by mail or in-person

1.  log-in, or create an account to get started. 
2. Select Urban Forestry as type of Permit 
3. Select Other - Lights, Attachments, Chemical Application
4. Type of work is Right of Way 
5. Follow the next steps

Go to Development Hub

For mail or in-person:

Development Services Center

1900 SW Fourth Avenue
First floor lobby
Portland, OR 97201

See here for current hours.