Columbia County Courthouse

230 Strand Street, St. Helens, OR 97051 • Phone: (503) 397-7210 • Toll Free: (888) 397-7210

Columbia County

Forms and Publications

Many of the following links for publications and forms will direct you to the Oregon Department of Revenue site in order to ensure you have the most up-to-date versions.  If the link has been broken, please contact us and we will correct it.

Business Personal Property

Deferral Programs


Manufactured Structure Ownership/Situs Changes

As of January 27, 2017, the Columbia County Assessor's Office is no longer authorized to process applications for manufactured home ownership or situs changes, however, we will provide certification that taxes have been paid.  The Building Codes Division (BCD) of the Oregon Department of Business and Consumer Services (DCBS) has launched their new online software system, and will be responsible for processing applications.  Please visit for more information.

Forms can be downloaded from BCD.

Property Record Changes

Property Tax Appeals and Reviews

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