Assessment & Taxation

The responsibilities of the Department of Assessment and Taxation include appraisal and assessment of property; collection of property taxes for all taxing entities; recording documents, land plats, issuing marriage licenses, records retention and administration of Elections.

Passport Office Closure Notice

The office is relocating to 161 NW Adams Ave, Hillsboro, OR 97124.  During the transition to the new location, the passport office will be closed March 16th through March 21st.

Please Note:

Due to increased passport applicants, we are now accepting a limited number of applications per hour.  If you arrive at our office and we have reached our capacity for that hour, we will schedule you for a later return time.  We do not accept phone scheduling at this time.


The GIS/Cartography section has moved to 231 W. Main Street, Hillsboro, OR 97124.

Adams Annex


Assessment and Taxation will be moving during the month of March, 2017.

    • March 7 - Administration Staff
    • March 17-20 - Tax Roll and Administration, Tax Collections, and Recording
    • March 20-24 - Appraisal

During this time, offices will continue to be open and services to the public will be limited. Please call in advance to ascertain that services are available. Thank you for your understanding.

Adams Crossing

Manufactured Structures Important Notice

At this time, Washington County is unable to process manufactured home ownership transfers on behalf of the State of Oregon's Department of Consumer and Business Services (DCBS).

For information about where and how you can process ownership transfers, please see the DCBS Oregon Building Codes Division website at or contact them at:1535 Edgewater St. NW, Salem, OR 97304; telephone: (503) 373-1309.

Property Tax Statement

Many of you will be receiving your annual Property Tax Statement on or before October 25, 2016.  Payment for taxes are due on or before November 15, 2016.  Two drop boxes are located in the Adams Crossing Building, 161 NW Adams Ave., Hillsboro.  These boxes are available October 26th through November 15th.  The 24 hour drop box site is located at the rear of the building; the other drop box site is available Monday through Friday 8:30 am - 5:00 pm, located in the Adams Crossing Building lobby outside Room 102.

For general tax questions, please see Property Tax Questions.  If you are looking for specific tax data relevant to your property, please call our office at 503-846-8741.

Payments must be POSTMARKED on or before November 15, 2016.  Please return the lower portion of your tax bill(s) with payment in the enclosed envelope.  You may also send payments directly to:

Property Tax Payment Center
PO Box 3587
Portland, OR 97208-3587


Washington County
Assessment & Taxation 161 NW Adams Avenue, Suite 103
Hillsboro, OR 97124

Pay Taxes Online