Upon cessation of the use which has given rise to an exemption hereunder, the county treasurer shall collect all taxes which would have been paid had the property not been exempt during the ten years preceding, or the life of such exemption if such be less, together with interest at the same rate and computed in the same way as that upon delinquent property taxes.

Additional tax payable at time of sale—Appeal of assessed values: RCW 84.36.812.