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A regional chlorine shortage has disrupted supplies. The Portland Water Bureau is monitoring the situation and evaluating our supplies and procedures. Get updates.

Chemical Treatment Tree Permits

Service
There are several options for applying including; online, mail, and in person.
  1. Introduction

    When Is a Permit Required?

    See Chemical Treatment Permits FAQ for more details. 

  2. Fill Out Application

    Call 503-823-TREE (8733) to request a paper Chemical Treatment Application

    Need Help Using Electronic Documents?

    Or download the forms below:

  3. Gather Materials

    Make sure to include:

    • Chemical Treatment Permit Application
    • A check made out to "City of Portland"
      • You can find the cost on the Fee Schedule below
    Fee Schedule (137.16 KB)
  4. Mail to:

    Urban Forestry
    1900 SW 4th Ave, Suite 5000
    Portland, OR97201
    United States

  1. Introduction

    When Is a Permit Required?

    See Chemical Treatment Permits FAQ for more details. 

  2. Fill Out Application

    Call 503-823-TREE (8733) to request a paper Street Tree Permit Application (non-removal)

    Need Help Using Electronic Documents?

    Or download the forms below:

  3. Bring in Application

    1900 SW Fourth Avenue
    First floor lobby
    Portland, OR 97201
    dangerEmergency Closure
    Emergency closure information
    Monday through Friday 8 a.m. to 3 p.m. except Thursdays 8 a.m. to noon