32. Where a builder of an addition to a multiple unit residential complex makes a supply of the complex or an interest in it by way of sale that, but for this section, would be a taxable supply and, but for the construction of the addition, would be an exempt supply described in section 97,(1) the addition and the remainder of the complex are each deemed to be a separate property;
(2) the sale of the addition or interest in it is deemed to be a supply separate from the sale of the remainder of the complex or interest in it; and
(3) neither supply is incidental to the other.