Mir Bros Unit Constructions Pty Ltd v Roads & Traffic Authority of New South Wales

Mir Bros Unit Constructions Pty Ltd (the owner) appealed to the Court of Appeal of New South Wales against a decision of the Land and Environment Court concerning compensation payable for the compulsory acquisition of land by the Roads & Traffic Authority of New South Wales (the Authority). The dispute centred on the assessment of compensation under the *Land Acquisition (Just Terms Compensation) Act 1991* (NSW).

The primary legal issues before the Court of Appeal were whether the Land and Environment Court erred in its application of the "before and after" method of valuation, specifically in failing to adequately consider the potentiality of the land for subdivision. Further issues included whether the valuation had regard to the owner's use of the land for development and subsequent holding, the impact of the severance on the residue, and whether compensation could be awarded for the loss of potential development rights, including the purchase of additional floor space and lost economies of scale.

The Court of Appeal, comprising Spigelman CJ, Handley JA, and Tobias JA, affirmed the decision of the Land and Environment Court. The Court held that the "before and after" method was appropriately applied and that the valuation had regard to the relevant factors. It was determined that the potentiality for subdivision was considered, but its weight was a matter for the valuer. The Court also found that compensation for the loss of potential development rights, such as purchasing equivalent floor space or lost economies of scale, was not permissible under the Act, as these represented speculative future profits rather than actual loss. The value of the residue was also considered, and it was found that any increase in its value was properly accounted for.

The appeal was dismissed, and Mir Bros Unit Constructions Pty Ltd was ordered to pay the costs of the Roads & Traffic Authority of New South Wales.