239. For the purposes of subdivision 5, except sections 243.1, 252 and 253.1, where in any period beginning on the later of(1) the day a registrant last acquired particular property, and
(2) the day any provision of subdivision 5 that applies in respect of any change in use of property was last applicable in respect of the property,and ending at any time after that day, any change in the use of the property is insignificant, the use of the property is deemed not to have changed in that period.
For the purposes of this section, a change in the use of property from use primarily for one purpose to use primarily for another purpose is not insignificant, but any other change in the use of property that is a change of less than 10 % of the total use of the property is insignificant.
1991, c. 67, s. 239; 1993, c. 19, s. 193.