Assessor's Office

UPDATE July 6, 2020:  Columbia County is open to the public on an appointment basis.  In-person services must adhere to all the current face covering and social distancing requirements during the pandemic.  Our office continues to be available by phone, 503-397-2240, and email,, during our regular business hours.

Sue Martin, Columbia County AssessorWelcome from Columbia County Assessor Sue Martin

Thank you for visiting the webpage of the Columbia County Assessor.  Please know that my staff and I are committed to using a proven foundation to establish fair and equitable property values in the county.  Your property taxes are vitally important to the economic health and sustainability of Columbia County.  Please feel free to contact us about any concern you have about property assessment or your eligibility for available property tax relief programs.

About the Assessor's Office

The Columbia County Assessor is an elected official whose role is to establish a fair and equitable real market value on all real property and business personal property for tax purposes in accordance with Oregon Property Tax Laws.  The assessor is responsible for the administration of all property tax data records and maintains accurate parcel ownership data based upon recorded property transactions at the Columbia County Clerk's Office.

The major duties of the Assessor are locate and identify each property; inventory, classify, value and calculate the tax on each property; prepare and certify the annual assessment roll for the county; and respond to all property value appeals.

Property Records Online

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Assessors quick links
General Information
County Assessor
Sue Martin
Phone Numbers
Fax: 503-397-5153
Emergencies: Dial 911
230 Strand St.
Columbia County Courthouse Annex
St. Helens,

Monday - Friday
8:30 a.m. to 5:00 p.m.
We are available by phone and email, or by appointment only. Please allow 1 full business day for a response. Thank you for your patience.