Oregon Revised Statutes Revenue and Taxation § 312.270

(1) When a county acquires real property by foreclosure for delinquent taxes, the conveyance vests in the county title to the property, free from all liens and encumbrances except assessments levied by a municipal corporation for local improvements to the property.

(2) A private purchaser at resale of such property by the county acquires title free and clear of all assessments for local improvements levied by any municipal corporation.