Section 308A.321 - Withdrawal by assessor when use changed; notice; imposition of additional taxes; interest; penalty; exception(1) When land which has been classified and assessed under ORS 308A.300 to 308A.330 as open space land is applied to some use other than as open space land, except through compliance with ORS 308A.318(2), or except as a result of the exercise of the power of eminent domain, the owner shall within 60 days thereof notify the county assessor of such change in use. The assessor or assessors shall withdraw the land from classification and immediately shall give written notice of the withdrawal to the granting authority that classified the land; and additional real property taxes shall be imposed upon such land in an amount equal to the amount that would have been due under ORS 308A.318 if notice had been given by the owner as of the date of withdrawal, plus a penalty equal to 20 percent of the amount so determined.(2) If no notice is given as required by subsection (1) of this section, the assessor, upon discovery of the change in use, shall compute the amount of taxes, penalty and interest described in subsection (1) of this section, as though notice had been given, and shall add thereto an additional penalty equal to 20 percent of the total amount so computed, for failure to give such notice.(3) The limitation described in ORS 308A.318(2) applies only to the computation of taxes and interest, and not to the penalties described in subsections (1) and (2) of this section.(4) The provisions of subsections (1) and (2) of this section shall not apply in the event that the change in use results from the sale of a least 50 percent of such land classified under ORS 308A.300 to 308A.330 within two years after the death of the owner.