The statutory scheme
9 Section 55 of the Acquisition Act provides that the amount of compensation to which a person is entitled must be assessed having regard only to specified matters, one of which is "the market value of the land on the date of its acquisition": s 55(a). That concept is further defined in s 56 which provides:
56 Market value
(1) In this Act:
market value of land at any time means the amount that would have been paid for the land if it had been sold at that time by a willing but not anxious seller to a willing but not anxious buyer, disregarding (for the purpose of determining the amount that would have been paid):
(a) any increase or decrease in the value of the land caused by the carrying out of, or the proposal to carry out, the public purpose for which the land was acquired, and
(b) any increase in the value of the land caused by the carrying out by the authority of the State, before the land is acquired, of improvements for the public purpose for which the land is to be acquired, and
(c) any increase in the value of the land caused by its use in a manner or for a purpose contrary to law.
10 Reference to authority and principle may be of assistance in understanding the statutory purpose underlying a provision such as s 56(1) and may give guidance as to its application in particular circumstances. Thus, in a general sense, it is appropriate to note that it constitutes a statement of the Pointe Gourde principle: see 63 NSWLR 407 at [31]. Nevertheless, as the Chief Justice has recently explained in Leichhardt Council v Roads & Traffic Authority (NSW) [2006] NSWCA 353 the focus of attention must be on the language of s 56(1).
11 The introduction to sub-s 56(1) encapsulates the well-understood principle that the market value of land is the amount that would have been paid if sold at the time of acquisition, by a willing but not anxious seller to a willing but not anxious buyer. To apply that principle one must first identify relevant characteristics of the land. The critical characteristic in the present case is the zoning, which imposes a legal constraint on possible development and hence market value.
12 At the time of acquisition, the land was zoned industrial under the Leichhardt Local Environmental Plan 2000 ("the 2000 LEP"). That zoning had taken effect on 22 December 2000. Prior to that, a small parcel of the land was zoned residential, but the bulk of the land was zoned "waterfront industrial 4(c)" under the Leichhardt Planning Scheme Ordinance, created under the Local Government Act 1919 (NSW).
13 At the hearing of the present appeal, something was sought to be made of differences between the waterfront industrial zoning and the industrial zoning under the 2000 LEP. As a matter of form, the earlier Ordinance had adopted the approach that any purpose was permissible with consent, other than those identified as impermissible. The 2000 LEP took the reverse approach, identifying those uses which were permissible. The change in substance, which may well have been inadvertent, was that the new industrial zoning under the 2000 LEP appeared to preclude the limited activity which had been carried out by Caltex on the land immediately prior to the commencement of the 2000 LEP, although existing use rights may have allowed a continuation of those activities. However, nothing turns on either of the changes in the form or substance of the zoning: the critical question is whether the Court below was correct to proceed on the basis that, for the purpose of the hypothetical sale, the land should be treated as zoned residential.
14 The bulk of the land was not zoned residential at the date of acquisition, nor had it been zoned residential at any relevant time. It was common ground that the land would have had a higher value, if it had been zoned residential. Thus, if the maintenance of the industrial zoning by the Council formed part of "the carrying out of or the proposal to carry out" the public purpose for which the land was acquired, it was contended that the difference in value between the land with a residential zoning and the land with an industrial zoning was "caused by" that action of the Council and was to be disregarded, pursuant to s 56(1)(a).
15 The principles expounded in Housing Commission of New South Wales v San Sebastian Pty Ltd (1978) 140 CLR 196 continue to provide assistance in understanding the scope of this provision. The statutory provision in issue in that case, s 124 of the Public Works Act 1912 (NSW), required the value of resumed land to be assessed "without reference to any alteration in such value arising from the establishment of … public works upon or for which such land was resumed". Despite semantic differences, there is conceptual coherence between "the establishment of public works" and "the carrying out of the public purpose". Each provision requires the valuer to disregard any alteration in value. The element of connection in the Public Works Act was identified by the words "arising from", whereas the Acquisition Act uses the term "caused by". The latter term may require a more direct causal connection, but that is not critical for the present case.
16 The language of s 56(1)(a), not unlike that of former s 124, focuses on the carrying out of the public purpose and the proposal to carry it out. These are the matters which may have a relevant effect on market value. They may need to be distinguished from public opinion as to the desirability of the land for that purpose. They connote a degree of immediacy in the activity relied on as affecting the public purpose. There will be matters of degree and judgment involved in assessing particular circumstances, with the benefit of hindsight, knowing the purpose "for which the land was acquired".
17 However, dicta in San Sebastian should not be treated as some abstract statement of legal principle, divorced from the circumstances of the case. Thus, the claim for compensation in that case was brought by a landowner which had submitted development applications which sought to develop land in accordance with the zoning prescribed on 16 July 1971, which had not been determined, prior to the resumption on 18 July 1975. There had been no change in the zoning at the date of resumption: see p 201, par 17. It is clear from the statement of factors relied upon by the principal valuer as demonstrating a depressed market value, that the primary considerations taken into account were the negotiations between Commonwealth, State and local arms of government, which had commenced in December 1972: p 203, par 24 and par 11. When Jacobs J later noted that it was appropriate to treat "the whole subject matter of the establishment of the particular public work" as including "even urging by outside bodies that the public work should be established" he was referring to the imposition of 'green bans' by the Builders' Labourers' Federation in about February 1973. These were referred to among the "other factors" depressing value relied upon by the valuers, at p 203, par 25: see p 213. The relevance of action, whether formal or informal, taken by one or other arms of government acting in common purpose with the resuming authority and the effect of public urging to the same end, is one thing, whereas urging in favour of a purpose, resisted by the resuming authority, is quite another. Further, the context of the comments in San Sebastian regarding such urging, was a consideration of factors affecting market value and thus the factors which would affect the hypothetical seller and buyer.
18 As was noted in the first appeal, s 56(1)(a) does not in terms permit the judicial valuer to have regard to an increase in value which has not accrued at the date of acquisition. Of course, the value of land may reflect potentialities which have not been realised. A proposal to carry out the public purpose for which the land is later acquired may be seen as likely to prevent that realisation, and hence diminish the value of the land. That decrease must be disregarded. This concept was articulated by the High Court in Queensland v Murphy (1990) 95 ALR 493 at 496:
"One purpose of this principle is to ensure that a resuming authority does not employ planning restrictions to destroy the development potential of the land and then assess compensation for its resumption on the basis that the destroyed potential had never existed: Melwood Units Pty Ltd v Commissioner of Main Roads [1979] AC 426 at 434."