Oregon Revised Statutes Cities § 223.565

(1) The owner, or legal representatives of the owner, or the successor in interest of the owner, or any person having a lien by judgment or mortgage, or owner of a tax lien, on any property sold by virtue of ORS 223.520 may redeem it upon conditions provided in this section. Redemption of any real property sold for a delinquent final assessment or lien under the provisions of ORS 223.505 to 223.590 may be made by paying to the treasurer, at any time within one year from the date of the certificate of sale, the purchase price and 10 percent thereof as penalty, and interest on the purchase price at the rate of 10 percent per annum, from the date of the certificate. Where redemption is made by the holder of a tax lien the holder may have such redemption noted upon the record of the lien in like manner and with like effect as prescribed in this section. Such redemption shall discharge the property so sold from the effect of the sale and, if made by a lien creditor, the amount paid for the redemption shall thereafter be deemed a part of the judgment, mortgage or tax lien, as the case may be, and shall bear like interest, and may be enforced and collected as a part thereof.

(2) Anyone applying or seeking to redeem property sold under the provisions of ORS 223.505 to 223.590 must pay or offer to pay the sum necessary in lawful money of the United States.

(3) When an individual purchases real property at a foreclosure sale under ORS 223.505 to 223.590, if, with the approval of the local government, that purchaser incurs costs for maintaining or improving the property during the period allowed for redemption and if the property is subsequently redeemed, the treasurer may return all or part of the penalty paid by the person redeeming the property to the purchaser as provided by charter or ordinance of the local government.