(1) Whenever the assessor discovers or receives credible information, or if the assessor has reason to believe that any real or personal property, including property subject to assessment by the Department of Revenue, or any buildings, structures, improvements or timber on land previously assessed without the same, has from any cause been omitted, in whole or in part, from assessment and taxation on the current assessment and tax rolls or on any such rolls for any year or years not exceeding five years prior to the last certified roll, the assessor shall give notice as provided in ORS § 311.219.

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(2) Property or the excess cost of property, after adjustment to reflect real market value, shall be presumed to be omitted property subject to additional assessment as provided in ORS § 311.216 to 311.232 whenever the assessor discovers or receives credible information:

(a) That the addition of any building, structure, improvement, machinery or equipment was not reported in a return filed under ORS § 308.285 or 308.290; or

(b) That the cost as of January 1 of any building, structure, improvement, machinery or equipment reported in a return required by the assessor under ORS § 308.285 or 308.290 exceeds the cost stated in the return.

(3) If the tax collector discovers or receives credible information or if the tax collector has reason to believe that any property subject to taxation has been omitted from the tax roll, the tax collector shall immediately bring this to the attention of the assessor by written notice. [Formerly 311.207; 1999 c.21 § 28; 1999 c.500 § 4; 2003 c.46 § 27]