· in November 2005, Bill confirmed that Veronica would be given an opportunity to purchase the property once the business was viable;
· in December 2007, Bill informed Veronica that upgrade works were required to obtain a fire certificate "to make sure that you can continue to operate at the property", and as a result, between January and March 2008, the lessees spent about $8,000 for this purpose, on wiring for emergency exit signs, fire extinguishers and roof maintenance.
28 As Mr Maltz, for the lessors, submits, none of those matters evinces a "clear and unequivocal" representation that the lessors would be permitted to remain for any particular term beyond the duration of the lease [see Legione v Hateley (1983) 152 CLR 406, 436-437 (Mason and Deane JJ); Woodhouse A C Israel Cocoa Ltd SA v Nigerian Produce Manufacturing Co Ltd [1971] 2 QB 23, 60 (Lord Denning MR); Low v Bouverie [1891] 3 Ch 82, 106 (Bowen LJ), 113 (Kay LJ)]. However, requirement that a representation (or assumption) must be clear if it is to found an estoppel, does not mean that it must be express, and a sufficiently clear representation (or assumption) may properly be implied from words, conduct or even silence. A promise may be definite, in the sense that there is a clear promise to do something, even though exactly what is promised is not precisely defined [Flinn v Flinn [1999] 3 VR 712, 738 (Brooking JA, Charles and Batt JJA concurring); see also Australian Crime Commission v Gray [2003] NSWCA 318, [184]-[200] (Ipp JA; Mason P and Tobias JA agreeing on this point)]. The requirement that a party should not be estopped on an ambiguity does not mean that the precise terms of the assumption or representation which founds the claimed estoppel must be entirely and unequivocally clear: an estoppel can arise even though the precise terms of the assumption or representation may be difficult to ascertain, so long as it is clear that there was an assumption, and its scope - although its full extent may be uncertain - is at least sufficient that it can be said that the defendant's conduct would involve a departure from it. It is not necessary that a representation (or assumption) be clear in its entirety, and it suffices that so much of it as is necessary to found the propounded estoppel satisfies the requirement: as Mason and Deane JJ explained in Legione v Hateley, a representation that a particular right will not be asserted for at least x days is not rendered, for the purposes of promissory estoppel, unclear or equivocal merely because the words used are equivocal as to whether the relevant period is x days, x plus one day or x plus two days, so that if what is said or done amounts to a clear and unequivocal representation that the particular right will not be asserted for a period of at least x days, a representation to that effect can be relied on to found an estoppel [Legione v Hateley, 438-439]. And as Tobias JA has observed, even if a representation is insufficiently precise to give rise to a contract, that does not necessarily disqualify the representation from founding an estoppel, much depending upon the circumstances in which the representation is made and the context against which it is to be considered, so that a representation will be sufficiently clear and unambiguous if it is reasonable for the representee to have interpreted it in a particular way which it is clearly capable of bearing and upon which it is reasonable for the representee to rely, and in such circumstances it would be unconscionable for the representor to deny responsibility for the detriment that arises because of that reliance. On the other hand, if it is not reasonable for the representee to rely on the meaning he attributes to the representation, then it cannot be unconscionable for the representor to deny responsibility for the detriment that the representee sustains because of that unreasonable reliance [Galaxidis v Galaxidis [2004] NSWCA 111, [93]-[94]].
29 Accordingly, it is not fatal for present purposes that the lessors cannot establish a precise expectation as to how long they would be permitted to remain. The essential question for present purposes is whether their expenditure was referable to an expectation, known to the lessors, that they would be permitted to remain in occupation until sometime beyond 1 August 2008.
30 There are not insignificant contra-indications. Bill denies the oral representations on which the lessees rely, and there are no contemporaneous records of them. However, that factual dispute cannot be resolved on an interlocutory application, and does not deny the existence of a seriously arguable case. Nor does the circumstance that Bill disputes that he understood that the lessees were under any misapprehension as to their true position, if on the present state of the evidence it is seriously arguable that he knew of their assumption.
31 The strongest matter against the lessees entertaining any relevant assumption, or the lessors knowing of it, is the lease itself, which was negotiated after the February 2000 representation - it was executed on 18 April 2001 - and apart from the option term said nothing as to any further right of occupation. At least on one view, it gave content to the concept of "a long enough lease to ensure that the business is viable" referred to in the representation. Indeed, Veronica said that it was because of Bill's representations - to the effect that the lessees could stay in occupation until the business was making enough money to provide a decent living for all the family - that they agreed on a four-year lease with a four-year option.
32 However, there are also indicia that the parties did not regard their relationship as being exclusively or strictly governed by the formal lease terms. One important instance of this is that the lessees remained in occupation after the first four years without any formal exercise of the option. Another is that arrangements in respect of payment of rent departed from those prescribed by the lease and were varied, from time to time, by Bill in his managerial role.
33 Moreover, the ongoing expenditure on the property and business, as late as early 2008, and very considerably in excess of that contemplated at the time of the original lease, provides the strongest basis for concluding that the lessees had an expectation of being able to remain in the premises after expiry of the lease on some basis. That expenditure is not easily explicable on any basis other than an expectation of a continuing opportunity to enjoy its benefit, which is inconsistent with exclusion from the property in the short term. The quantum of expenditure, and the circumstance that it was incurred not only at the outset, but also later, are suggestive of an assumption on the part of the lessees that they would be permitted to remain, notwithstanding the expiry of the formal lease. The lessees incurred additional expenditure in 2004 and 2005, apparently with the encouragement of the lessors, in the context of Veronica questioning whether - in the light of Bill's deteriorating health, the ever-increasing expenditure required to fund the business, and an alternative employment opportunity offered to her with Westpac - she should continue to invest money in the business, and Bill representing that she should as they were almost ready to commence production, and would require only a further $10,000 for that purpose. The conversation of December 2007 in relation to the fire certificate, which contemplated continued operation of the business by the lessees from the property, tells significantly in favour of such an assumption. And as to the lessors' role in creating the expectation, until his illness, Bill was involved in the business in a managerial role, and it was he who requested and authorised much of the relevant expenditure and made the representations on which the lessees rely.
34 It is unnecessary to conclude whether the evidence could support an expectation that the lessees would be able to remain indefinitely, in the sense that they might gain an equity to remain permanently [cf Plimmer v Mayor of Wellington (1884) 9 App Cas 699; Ward v Kirkland [1967] Ch 194; Crabb v Arun District Council; Hill v AWJ Moore & Co Ltd (1990) 5 BPR 11,359]. Ms Paraska, who appeared for the lessees, more or less accepted that they could not reasonably have expected to be permitted to remain forever - a position that is consistent with their apparent contemplation that they would be given an opportunity to purchase the property, suggestive that absent a purchase their rights were not permanent. However, they also seem to have contemplated that, before the occasion for purchase arrived, they would be afforded enough time for the business to become "viable". On the basis of the matters to which I have referred, including the role of Bill in encouraging and implementing their expenditure, it is seriously arguable that the lessees entertained an expectation in the creation of which the lessors were implicated - to the effect that they would be permitted to remain, at least until there had been a reasonable opportunity for them to recoup the benefit of their expenditure, or if that proved impractical until an orderly removal of the business to appropriate alternative premises could take place, and that it would be unconscionable for the lessors to exclude them before then; and that, in the events which have transpired, that time has not yet arrived. While such an expectation is in a sense an imprecise one, it is not beyond the ability of the law to give content to the concept of a reasonable opportunity to recoup their investment.
35 Mr Maltz invoked the principle that where interlocutory relief will practically determine the final outcome of the case, the Court will review more closely than otherwise the relative strengths of the competing cases. [Kolback Securities Ltd v Epoch Mining NL (1987) 8 NSWLR 533]. However, this is not such a case. Granting relief will not practically determine the issue finally: it will remain for a final hearing to determine whether or not the lessees were entitled to remain and if so for how long, which might extend beyond the time of a final hearing; if it eventuates that they are not entitled to remain at all, or until the final hearing, the lessors will be entitled to invoke their undertaking as to damages; if interlocutory relief is declined, that will make it practically impossible to restore them to possession, but they would retain alternative remedies. This is not the type of case that McLelland J had in mind in Kolback Securities.