THE ISSUES ON APPEAL
15 It is not necessary, in my opinion, to consider any matters litigated, other than those I have identified. The first question is whether the respondents were entitled, according to relevant legal principles, to have damages assessed on the basis that the premises be demolished and re-erected, as his Honour found, rather than simply rectified. In his very frank submissions, Mr Margo acknowledged that there was evidence before the trial Judge on which he could have found that this was a proper case for demolition and re-construction. His main submission was, however, that when one viewed the whole of the evidence it was not reasonable for his Honour to come to that conclusion, and that a consideration of it should have led his Honour to the conclusion that damages should have been awarded based on rectification rather than demolition and reconstruction.
16 The parties accepted, correctly in my view, that the relevant legal principles are those stated by the High Court in Bellgrove v Eldridge (1954) 90 CLR 613. In that case there were defective foundations and the trial Judge held that in those circumstances demolition and rebuilding was reasonable and necessary to provide a building in conformity with the contract. With that conclusion the High Court agreed. In their joint judgment, Dixon CJ, Webb and Taylor JJ said, at page 617:
"In the present case, the respondent was entitled to have a building erected upon her land in accordance with the contracts and plans and specifications which formed part of it, and her damage is the loss which she has sustained by the failure of the appellant to perform his obligations to her. This loss cannot be measured by comparing the value of the building which has been erected with the value it would have borne if erected in accordance with the contract; her loss can, prima facie, be measured only by ascertaining the amount required to rectify the defects complained of and so give to her the equivalent of a building on her land which is substantially in accordance with the contract".
17 Their Honours considered that an owner is entitled to the reasonable cost of rectifying the departure or defect so far as that is possible, and that the measure of damages, subject to a qualification, is the difference between the contract price of the work or building contracted for and the cost of making it conform to the contract with certain associated damages.
18 At page 618 they continued:
"But the work necessary to remedy defects in a building and so produce conformity with the plans and specifications may, and frequently will, require the removal or demolition of some part of the structure. And it is obvious that the necessary remedial work may call for the removal or demolition of a more or less substantial part of the building. Indeed - and such was held to be the position in the present case - there may well be cases where the only practicable method of producing conformity with plans and specifications is by demolishing the whole of the building and erecting another in its place. In none of these cases is anything more done than that work which is required to achieve conformity and the cost of the work, whether it be necessary to replace only a small part, or a substantial part, or, indeed, the whole of the building is, subject to the qualification which we have already mentioned and to which we shall refer, together with any appropriate consequential damages, the extent of the building owner's loss".
19 Their Honours nextly stated the qualification:
"The qualification, however, to which this rule is subject is that, not only must the work undertaken be necessary to produce conformity, but that also, it must be a reasonable course to adopt … We prefer, however, to think that the building owner's right to undertake remedial works at the expense of a builder is not subject to any limit other than is to be found in the expressions "necessary" and "reasonable", for the expression "economic waste" appears to us to go too far and would deny to a building owner the right to demolish a structure which, though satisfactory as a structure of a particular type, is quite different in character from that called for by the contract. Many examples may, of course, be given of remedial work, which though necessary to produce conformity would not constitute a reasonable method of dealing with the situation and in such cases the true measure of the building owner's loss will be the diminution in value, if any, produced by the departure from the plans and specifications or by the defective workmanship or materials. As to what remedial work is both "necessary" and "reasonable" in any particular case is a question of fact. But the question whether demolition and re-erection is a reasonable method of remedying defects does not arise when defective foundations seriously threaten the stability of a house and when the threat can be removed only by such a course. That work, in such circumstances, is obviously reasonable and in our opinion may be undertaken at the expense of the builder".
20 Because of the way in which the parties, and particularly the appellant, chose to conduct the case, his Honour had before him only the reports of four expert engineers, none of whom was required for cross-examination. This Court has, on a number of occasions, remarked on the difficulties a Court confronts when asked to decide matters involving various types of expertise without the benefit of at least the principal expert witnesses being cross-examined.
21 Prima facie if there is no cross-examination of an expert, (and indeed most witnesses), there is no basis for a Judge not to accept the unchallenged evidence. I say "prima facie" because there are circumstances in which evidence in a report may be rejected or subject to criticism or doubt. This may occur where, for example, the report is ex facie illogical or inherently inconsistent; or where it is based on an incorrect or incomplete history; or where the assumptions on which it is founded are not established. However, in the absence of some such matters, there is no rational reason to not accept unchallenged evidence.
22 The reports of the respondents' two experts did not suffer from any of these deficiencies. Each recommended demolition and re-construction. Mr Margo put many submissions to this Court as to why that was an unreasonable response to the problem. However, the matters Mr Margo put by way of submission should, in my opinion, have been put to the witnesses. As a matter of fairness, they should have been given the opportunity of answering criticisms of their views. As experience in conducting litigation frequently shows, cross-examination, far from eroding the expressed views, often strengthens them as the expert explains in more detail the reasoning process.
23 Furthermore, the Court has the opportunity of hearing the expert and making an evaluation of his or her evidence.
24 Another consequence may well flow from the failure to cross-examine. In the present case the appellant did not challenge the respondents' experts views. In such circumstances one may ask why the appellant should have been allowed to call any contrary evidence. The lack of challenge meant, at least prima facie, that the appellant accepted the views propounded. To allow conflicting evidence to be called raised, to some extent, a false issue. However, no objection was taken to the tender of that evidence.
25 The only reasonable inferences to be drawn from the failure of Counsel for the appellant to cross-examine the respondents' experts are that his instructions were that their evidence was probably right; or that a calculated decision (perhaps influenced by the first point) was taken to try to argue the matter without attacking the evidence. In these circumstances, the appellant's claim now for a new trial has no attraction. Either the new trial would be conducted in the same way, in which event, for reasons I shall seek to show, the result should be the same, or the appellant would seek to conduct the new trial in the way in which I think it should have on the first occasion.
26 The remarks I have made about cross-examination apply equally to the failure to cross-examine the author of the Burswood Homes tender.
27 Mr Margo accepted the force of the criticism of the failure to cross-examine. However, he submitted that the same approach was taken by Counsel for the respondents. Undoubtedly there was no attempt by Mr Black to cross-examine those witnesses, but the fact was that in the absence of cross-examination of his witnesses there was no need for him to seek to advance the appellant's case by undertaking cross-examination.
28 I shall now examine the evidence of the experts.