Assessor: Sue Martin
Office Hours: Monday thru Friday, 8:30 a.m. to 5:00 p.m. We are closed the second Thursday of each month from 8:30 a.m. to 12:00 p.m. for staff work sessions and training.
Location: Columbia County Courthouse Annex, 230 Strand, Saint Helens, Oregon
Phone: 503-397-2240 Fax: 503-397-5153
Search for Assessment and Tax Data Online
Notice to Manufactured Home Owners
As of May 1, 2017, the Columbia County Assessor's Office will again be able to process applications for manufactured home ownership or situs changes. We will continue to provide certification that taxes have been paid for those who choose to process the change online though the Building Codes Division (BCD) of the Oregon Department of Business and Consumer Services (DCBS) website. Please visit mhods.oregon.gov for more information.
Publications and Presentations
Faced with continued budget shortfalls and limited resources, Columbia County Property Appraisers developed a more efficient method of inspections that increased productivity and morale while maintaining a safe work environment. This is a powerpoint presentation video narrated by the appraisal staff.
Written by Tom Linhares, retired director of Multnomah County Tax Supervising & Conservation Commission, and previous Columbia County Assessor
Short video presentation on the changes to Oregon's Property System since 1990 and the limitations of our current system.
The mission of the Columbia County Assessor's Office is to apportion the cost of supporting local public service districts, on behalf of the patrons of those districts, so no taxpayer is required to pay more or less than their fair share by annually producing an accurate and timely assessment roll that complies with Oregon Revised Statutes and Oregon Administrative Rules.