The subtraction method of valuation (determining improved value and deducting value of improvements) remains impermissible for determining land value of the subject land under s 6A(1) of the Valuation of Land Act 1916, including for heritage-restricted land under s 14G. The assumptions in ss 6A(2) and 14G(1) operate only for the limited purpose of identifying highest and best use, not to displace the fundamental assumption in s 6A(1) that improvements had not been made. However, two of three judges expressed the view that the Toohey's principle is no longer sustainable given the statutory amendments, signalling potential for High Court reconsideration.
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