factual background
4 Until its liquidation commenced in 1994, Individual Homes Pty Ltd ("Individual Homes") was under the exclusive control of Mr & Mrs Martin, the plaintiffs below and the appellants in this Court. Individual Homes is the registered proprietor of a Crown Lease over land at 8 Grund Place, Kambah, in the Australian Capital Territory ("the property") that was granted on 23 October 1979. The house in which the Martins have lived since October 1979 is on the property, to which they claim to have made substantial improvements. The precise nature of the arrangements between the Martins and Individual Homes regarding their residence remains unclear. Notwithstanding the already lengthy litigation, at the time this appeal was heard, no court (or tribunal) had yet made any definitive finding of fact about these arrangements.
5 On 4 May 1994, upon the application of the Commonwealth Bank of Australia ("CBA"), the Chief Justice of the Supreme Court made orders for the compulsory winding up of Individual Homes pursuant to s 460(1) of the Corporations Law. Mr B A Taylor, the first respondent on this appeal, was appointed the company's liquidator. The Martins appealed. On 30 June 1994, a Full Court of this Court, by majority, made orders dismissing the "purported notice of appeal … as incompetent" and striking out a supplementary notice of appeal as an abuse of process. Subsequently, the High Court dismissed applications for special leave.
6 All subsequent proceedings have arisen essentially out of efforts by Individual Homes, in liquidation, to recover possession of the property from the Martins, who have, on most occasions, not had the benefit of legal representation. They were not represented on the hearing of this appeal, and Mr Martin spoke on behalf of himself and his wife.
7 After the order for winding up, Individual Homes (by its liquidator) sought to recover possession of the property upon the basis that the Martins were tenants at will, describing them as such in a notice to terminate dated 9 July 1994. Meanwhile, the Martins had initiated a second action in the Supreme Court, claiming that their entitlement to the property arose from two mortgages given by Individual Homes, as mortgagor, to each of them as mortgagees; that, upon the company's default, they had each lodged a caveat on the relevant certificate of title; and that Mr Martin had assumed adverse possession on 15 June 1989, and Mrs Martin, on 6 March 1990. Individual Homes (in liquidation) began a separate action, seeking orders for the removal of the caveats and for vacant possession of the property.
8 Both Supreme Court actions were heard together by Gallop J, who delivered judgment on 4 March 1997. His Honour gave judgment for Individual Homes, ordered that the caveats be removed, declared that the two alleged mortgages between Individual Homes and each of the Martins were void, and declared that the company was entitled to vacant possession of the property. Amongst other things, his Honour held that the mortgages upon which the Martins based their claim were "a ruse or device to defeat the rightful claims of the [Commonwealth Development Bank] and the CBA". His Honour further held that Mrs Martin was not the beneficial owner of the property, "but rather a creditor of the defendant pursuant to loans made by her to the defendant so that a 'proto-type' display home could be built".
9 On 24 April 1998, a Full Court of this Court (O'Loughlin, Whitlam and Finn JJ) dismissed most of the Martins' appeal against the decision of Gallop J, although it set aside his Honour's order declaring that Individual Homes was entitled to vacant possession. This was because of a submission, which had not been raised at first instance, that Individual Homes should be taken to have given the Martins a tenancy at will. The Court expressed the view that, if there were a tenancy at will, it would fall within the definition of "lease" in s 8(1) of the Landlord and Tenant Act 1949 (ACT). In this event, by virtue of that Act, Individual Homes would be obliged to bring proceedings for possession in the Magistrates' Court. The Court recognised, however, that the findings of the trial judge made it arguable that the Martins had, by their own acts, determined any such tenancy and, in consequence, they may have become tenants at sufferance. In order to recover possession from them as tenants at sufferance, Individual Homes would be obliged to maintain an action for ejectment in the Supreme Court. It was for these reasons that the Court held that it could not be "satisfied that the Supreme Court had jurisdiction to make an order for possession of the premises". The Martins' application for special leave was subsequently denied by the High Court.
10 For present purposes, it is unnecessary to set out in any detail the circumstances surrounding the numerous informations laid by Mr Martin against various people, including Mr Taylor, although Mr Martin mentioned them on the hearing of the appeal. The informations have all been stayed or dismissed. On 2 October 1992, a magistrate ordered that Mr Martin not file any further process in the Magistrates' Court without leave. That order culminated in a largely unsuccessful appeal to yet another Full Federal Court and a third unsuccessful application for special leave to the High Court.
11 Meanwhile, Individual Homes renewed its efforts to obtain possession of the property. By a letter dated 27 April 1998, it informed the Martins that it intended to take further steps, this time under the Landlord and Tenant Act. The company then gave a Notice to Quit dated 18 May 1998, purporting to terminate the claimed tenancy at will. The Martins did not deliver possession of the property to the company.
12 The Landlord and Tenant Act was repealed by the Residential Tenancies (Consequential Provisions) Act 1998 (ACT) on 25 May 1998 and replaced, in substance, by the Residential Tenancies Act 1997 (ACT) ("the RT Act"). The effect of this legislative change was to shift jurisdiction over certain tenancy disputes from the Magistrates' Court to the newly established Residential Tenancies Tribunal ("the RTT").
13 On 24 December 1998, Individual Homes applied to the RTT for a termination and possession order under s 47 of the RT Act. The Tribunal heard the application on 12 March 1999 and reserved its decision. On account of the subsequent proceedings (outlined below), as at the date when this appeal was heard, the Tribunal had not yet given its decision. The Martins submitted at the RTT hearing that the Tribunal lacked jurisdiction over the dispute. In an affidavit sworn on 31 March 1999, Mr Martin deposed that:
[T]owards the very conclusion of the hearing … [the Martins were] advised that the Tribunal would not refer the points of law, including the question of jurisdiction, raised by the plaintiffs to the ACT Supreme Court under sections 124 & 125 of the ACT Residential Tenancies Act 1997. The Tribunal's view was that the question of jurisdiction and points of law could, if desired, go on appeal after the decision of the Tribunal and or a Writ of Eviction of the Tribunal.
On 16 March 1999, shortly after the RTT hearing, the Martins filed an originating application in the Supreme Court, seeking what they described as "Rulings on … points of law" and naming Individual Homes and its liquidator as defendants. By notice of motion dated 23 March 1999, Individual Homes and its liquidator sought to have the Martins' application set aside. The primary judge heard the matter on 1 April 1999. In broad terms, the Martins submitted that the winding up of Individual Homes should be terminated; that the RTT had no jurisdiction over the property dispute; and that Individual Homes was not, in any event, entitled to possession until it had paid them the value of the improvements that they had allegedly made upon the property. Judgment was delivered on 27 May 1999. This is the subject of the present appeal. Briefly, the Martins' submissions were all rejected, save one. The primary judge found, as the Martins submitted, that the RTT had no jurisdiction over the alleged tenancy at will between them and Individual Homes.