The obligations secured by the equitable mortgage
28What were the obligations whose performance was secured by the equitable mortgage? As the primary judge observed, and as Mr Lockhart SC who with Mr Colquhoun appeared for the Bank very properly conceded, this was not an "all monies" mortgage. It secured the repayment of the particular amounts on the date agreed between the parties by reference to the "Offer Documents". That is to be read as a reference to the separate letters, each described as "Our Offer Document", to each of Mr Clowes and Ms Moore, each dated 1 May 2002, and each of which referred to a "Reducible Mortgage Loan". True it is that there was also a reference to a "Plain & Simple Home Loan", but there was no such loan in 2002, and no reliance was placed upon the happenstance that some three years later a separate loan agreement answering that description was entered into between the same parties.
29There was an infelicity in the form of the Offer Documents, which referred to a "1st registered mortgage" over the Double Bay flat, wording which proceeded on the false premise that a registered mortgage could be granted over that flat. But on no view could the incorrect language in the First Loan deny effect to the clear and correctly drafted language of the mortgaging clause in the Mortgage and Charge entered into one week later.
30The next question, chronologically, is whether the new obligation to repay a further advance of $20,000 with interest which arose in December 2002 was secured by the equitable mortgage. The Bank advanced no claim based on equitable rectification, or estoppel by convention. On the primary way it put its case, its claim was and is confined to contract.
31The contractual document accepted by the Borrowers referred to "Security for the loan", as reproduced above. Once again, there was a defect in the documents. There was not, nor could there ever be, any mortgage over real property at 7/43 xxxxx Avenue Double Bay, let alone a "first ranking" mortgage as stated in the letter of offer, or a "Prime 1st registered mortgage" as stated in the "Continued Reliance and Extension of Security" form.
32The question is whether the objective intention of the parties manifested in the documents they executed was such as to extend the scope of the existing equitable mortgage so that it secured the obligation to repay the additional $20,000 advanced pursuant to the Second Loan.
33In support of that proposition, the Bank makes essentially three points. First, it says that the references to a first registered mortgage over the apartment are a legal nonsense, such that they can readily be construed as references to the mortgage of the parcel of shares which gave the right to use and occupy that apartment. Secondly, it says that at the very least the words are ambiguous, and should be construed to bear that meaning. The Bank prays in aid established principles of construction: that words should be construed so as to avoid making commercial nonsense: Zhu v Treasurer (NSW) [2004] HCA 56; (2004) 218 CLR 530 at [82]; that words should not be construed pedantically or in a manner prone to defeat the evident commercial purpose: Franklins Pty Ltd v Metcash Trading Ltd [2009] NSWCA 407; (2009) 76 NSWLR 603 at [19], and that where there is ambiguity, a construction should be preferred which avoids consequences which are capricious, unreasonable, inconvenient or unjust: Australian Broadcasting Commission v Australasian Performing Right Association Ltd (1973) 129 CLR 99 at 109. Thirdly, it adds that the same language in the documentation for the First Loan supported an equitable mortgage; the same result should be given to the similarly inaccurate language in the Second and Third Loans.
34In my view, the Bank's submission should be accepted because of the Bank's first point. In my opinion this is a clear case where the literal meaning of the contractual words is an absurdity, and it is self-evident what the objective intention is to be taken to have been. Where both those elements are present, as here, ordinary processes of contractual construction displace an absurd literal meaning by a meaningful legal meaning. As this Court observed in Westpac Banking Corporation v Tanzone Pty Ltd [2000] NSWCA 25; (2000) 9 BPR 17,521 at [21], the principle is premised upon absurdity, not ambiguity, and is available even where, as here, the language is unambiguous.
35The applicable principles are conveniently found in Noon v Bondi Beach Astra Retirement Village Pty Ltd [2010] NSWCA 202 at [46], where Giles JA said, with the agreement of Macfarlan JA:
"The process of construction may bring a marked divergence from the text. In Wilson v Wilson [1854] EngR 513; (1854) 5 HL Cas 40 'John' was read as 'Mary' in a will. In Fitzgerald v Masters [1956] HCA 53; (1956) 95 CLR 420 'inconsistent' was read as 'consistent' in a contract for sale. As a recent illustration in McHugh Holdings Pty Ltd v Newtown Colonial Hotels Pty Ltd [2008] NSWSC 542; (2008) 73 NSWLR 53 'lessor' was read as 'lessee' in a lease. This is often because a mistake is obvious on the face of the instrument and in Chartbrook Ltd v Persimmon Homes Ltd [2009] UKHL 38; [2009] 1 AC 1101 Lord Hoffmann, with whom Lords Hope, Rodger and Walker and Baroness Hale relevantly agreed, accepted that there must be a clear mistake on the face of the instrument and it must be clear what correction ought to be made in order to cure the mistake. But in Fitzgerald v Masters at 437 it was explained 'the rejection of repugnant words, the transposition of words and the supplying of omitted words' is a consequence of 'the rule that the intention of the parties is to be ascertained from the instrument as a whole and that this intention when ascertained will govern its construction'. Ascertaining the intention of the parties, of course, is in accordance with the principles of contract construction abovementioned."
36In the same case, Young JA referred at [179] to Brereton J's decision in Saxby Soft Drinks Pty Ltd v George Saxby Beverages Pty Ltd [2009] NSWSC 1486; (2009) 14 BPR 27,213 in which the word "shorter" was read as "longer".
37This principle is distinct from rectification in equity. As Lord St Leonards said in Wilson v Wilson (1854) 5 HL Cas 40 at 66-67; 10 ER 811 at 822:
"Now it is a great mistake if it is supposed that even a Court of Law cannot correct a mistake, or error, on the face of an instrument: there is no magic in words. If you find a clear mistake, and it admits of no other construction, a Court of Law, as well as a Court of Equity, without impugning any doctrine about correcting those things which can only be shown by parol evidence to be mistakes - without, I say, going into those cases at all, both Courts of Law and of Equity may correct an obvious mistake on the face of an instrument without the slightest difficulty."
38True it is that that principle requires a very strong level of conviction that a mistake has been made. To use the language of Dixon CJ and Fullagar J in Fitzgerald v Masters [1956] HCA 53; (1956) 95 CLR 420 at 426-427, it must be "clearly necessary in order to avoid absurdity or inconsistency", and, as this Court said in Miwa Pty Ltd v Siantan Properties Pty Ltd [2011] NSWCA 297 at [18], the test of absurdity is not easily satisfied. But that demanding test is in my view satisfied in this case. The principle is not confined to linguistic errors such as "inconsistent" being read as "consistent" or "shorter" being read as "longer". The principle extends to obvious conceptual errors, such as "lessor" being read as "lessee" as in McHugh Holdings Pty Ltd v Newtown Colonial Hotel Pty Ltd [2008] NSWSC 542; (2008) 73 NSWLR 53, or words denoting a mortgage of company title flat being read as a mortgage of the shares in the company which entitle their owner to that flat. In all those cases, it is perfectly clear what legal meaning is to be given to the literally absurd words.
39It follows in my view that the words "first ranking mortgage ... over 7/43 xxxxx Avenue Double Bay" where they appear in the letter of offer, and the words "Prime 1st registered mortgage over 7/43 xxxxx Avenue Double Bay NSW 2028" where they appear in the "Continued Reliance and Extension of Security" form executed by the Borrowers on 18 December 2002 are in each case to be construed as referring to the mortgage which the Borrowers had previously given over the Shares which entitled them to use and occupy that flat, being the only mortgage that was capable of being given in respect of that flat. The execution of that form by the Borrowers satisfied the condition precedent in the Second Loan, and validly extended the existing equitable mortgage to secure the new obligations incurred by them pursuant to that Loan. To that extent, it follows that the appeal must be allowed.
40The letter of offer in respect of the Third Loan contained identical language as to the "Security for the loan" and the condition precedent that "Continued Reliance and Extension Form to be Executed" as had appeared in the Second Loan. However, this time the Continued Reliance and Extension Form is not in evidence. The Bank adduced no secondary evidence of the form, or any searches for it, nor did it adduce any evidence beyond the contractual documents and drawing down of funds of the circumstances in which the Third Loan was entered into. As noted above, the Borrowers did not appear at trial or on appeal.
41The appropriate inference to be drawn in those circumstances, as Mr Lockhart candidly conceded, is that notwithstanding the condition precedent, the Bank proceeded to advance the Third Loan without obtaining an extension of the existing mortgage. That is something the Bank was entitled to do; the condition precedent was after all for its benefit.
42That presents a difficulty for the Bank. At the time of the Third Loan, the Bank had the benefit of an equitable mortgage to secure the repayment of the First Loan, which had been extended to secure the repayment of the Second Loan. The Bank's letter of offer stated that it was the execution of the Continued Reliance and Extension form which "extends the effect of the security which HomeSide Lending now holds so that it also secures all further obligations which arise under this contract for the security provider." The construction propounded by the Bank requires a conclusion that that statement was incorrect, and that the existing mortgage would extend to the Third Loan merely upon acceptance of its terms, even if the form were not executed by the Borrowers.
43However, for the following reasons I have reached the view that the Bank's construction is correct. The first is that the signing page makes it plain that the borrowers acknowledged that "each security you have given ... which is referred to under "Security" extends to the resulting loan agreement between you and us". Those words are unambiguous. The second is that those words are not buried in small print in the general conditions; they are on the signing page, a page the Borrowers must be taken to have seen, and they are identified as three of the five important consequences of the signing and return of the document. The third is that there is no necessary contradiction between the condition precedent waived by the Bank and the acknowledgement; the execution of the form was no doubt desirable in order to strengthen the Bank's position, but there is no sound basis to conclude that its absence was fatal to the extension of the security to the Third Loan. As Mr Lockhart put it, the provision for the execution of the "Continued Reliance and Extension Form" may be said to have reflected a "belt and braces" approach on the part of the Bank. The fourth is that this was a refinancing of an existing indebtedness, secured by a mortgage over the shares; there is nothing in the context to suggest that the Bank was refinancing the existing secured indebtedness, and indeed providing an additional $100,000 to the Borrowers, but this time without the benefit of any security whatsoever.
44Notwithstanding the series of errors all of which, so far as the evidence discloses, are attributable to the Bank, in the course of the borrowings in this case, this is not a case where there is anything to be discerned other than an objective intention for the Third Loan to be secured by the existing equitable mortgage over the parcel of shares.