29 Confirmation that s 124 gives the Court a discretion to refuse relief is provided by the decision of the Court of Appeal in Warringah Shire Council v Sedevcic (1987) 63 LGRA 361. Here, Cripps CJ at first instance had found that the respondent's use of the premises as a shop was in breach of the EP&A Act, but refused, on discretionary grounds, to grant an injunction restraining that use. An appeal against this exercise of discretion was dismissed. Kirby P, at 365-367, set out a number of useful guidelines relevant to the exercise of the Court's discretion. They included the following:
(1) The discretionary power conferred on the Court by s 124 of the Act is wide. Relevantly to the present case, it is as wide as the discretion enjoyed by the Supreme Court in its equitable jurisdiction…..
(2) It is undesirable to endeavour, by drawing upon decisions in differing fact situations which have presented in earlier cases, to attempt to catalogue or classify all of the circumstances which will enliven the exercise of the discretion in cases yet to come. By the statute, the discretion is not fettered. It is not limited either to particular classes of cases or to limited or special cases.
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(4) In exercising the discretion, it must be kept in mind that the restraint sought is not, in its nature, the enforcement of a private right, whether in equity or otherwise. It is the enforcement of a public duty imposed by or under an act of parliament, by which parliament has expressed itself on the public interest which exists in the orderly development and use of the environment…..
(5) …..There is nothing in the Act by which the discretion is fettered or limited to "special cases", as Mahoney J, as he then was, pointed out in analogous circumstances in Blacktown Municipal Council v Friend (1974) 29 LGRA 192 (at 197). But the obvious intention of the Act is that, normally, those concerned in development and use of the environment will comply with the terms of the legislation. Otherwise, if unlawful exceptions and exemptions became a frequent occurrence, condoned by the exercise of the discretion under s 124, the equal and orderly enforcement of the Act could be undermined. A sense of inequity could then be felt by those complied with the requirements of the Act or who failed to secure the favourable exercise of the discretion under s 124.
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(8) The wide discretion has been described as an " adequate safeguard against abuse of a salutary procedure" : see Menzies J in Cooney v Ku-Ring Gai Municipal Council (1964) 114 CLR 582 at 605. It permits the court to soften, according to the justice of particular circumstances, the application of rules which, though right in the general, may produce an unjust result in the particular case. Sometimes this "softening " can be achieved by postponing the effect of injunctive relief….Sometimes that evidence will not achieve a just result…
(emphasis added)
30 Mahoney JA at 372 said "…the court has the power to refuse to enforce by injunction the prohibition of a use in an individual case. That discretion was, no doubt, maintained under the existing planning regime to permit the hardship which otherwise will result from the generality of a planning scheme being appropriately modified… But it should be understood that each case depends upon its own facts and particularly is this so where what is involved is the exercise of such a discretion as this" (emphasis added). Clarke AJA at 373 also emphasised that the exercise of the judicial discretion was governed by the facts of the particular case under consideration.