8 Thus, where the registered proprietor wishes to refinance an existing first mortgage, there may be a strong case on the balance of convenience to permit it to do so, at least where that course will not prejudice or derogate from the caveator's claim. But it is always a highly relevant consideration whether the removal of the caveat will derogate from the caveator's claim, and it is a rare case indeed, if there is any, where a valid caveat will be removed for reasons of balance of convenience, if to do so would have an adverse effect on the priority of the caveator's claim [Custom Credit Corp Ltd v Ravi Nominees Pty Ltd (1992) 8 WAR 42 (Owen J); Buchanan v Crown & Gleeson [10]; Oceanview v Balaz, [11]. If the priority of the caveator's interest would be adversely affected by the removal of the caveat, it is at least ordinarily inappropriate to remove the caveat having regard to considerations of the balance of convenience [Custom Credit v Ravi, 50; Buchanan v Crown & Gleeson, [11]; Oceanview v Balaz, [11]. At least, ordinarily speaking, if the removal of the caveat would have the practical effect of deferring the priority of the caveator's equitable interest, its removal ought not be countenanced. One reason for this is that to do so is practically to prefer unsecured rights over the proprietary rights of the caveator.
9 In the present case, there is evidence - which is not contested - that in its present condition the subject property is worth about $1.23 million, and is subject to a registered first mortgage securing a sum of about $265,000 and a further secured interest of about $30,000, leaving an equity of some $935,000. The plaintiff's case is that they (she and her late husband) have advanced something in the order of $650,000, and that that advance, on one approach or another, would bear interest of, say, 7 percent per annum, which would exceed $300,000. Although the plaintiff puts her case on several different bases, some of which would attribute to her an interest of a greater amount, it suffices for the purpose of this application to observe that, on the approach I have just set out - which is probably the least generous to the plaintiff of the various analyses that she advanced - her interest would exceed $950,000 and thus exceed the remaining equity in the property.