“3.3.2 Retrospective and projected valuations Valuers may sometimes be asked to provide an opinion of value on a specified date in the past when market conditions will probably have been significantly different from those at the date of instruction. This situation can arise, for example, in valuations for taxation purposes or those used as evidence in a court case. If the valuation is an audit of another valuer’s work, the valuer will need to work with the evidence used in the valuation subject to the audit. In other cases, the valuer should consider the following. • Comparable evidence should only be used if it would have been available to a valuer on the date of valuation. • Viewed with the benefit of hindsight, comparable evidence can be much clearer than it would have appeared to a valuer at the date of valuation. The valuer valuing retrospectively needs to place themselves in the position of someone reviewing the available evidence on the valuation date, and then make a judgement on the extent and nature of the evidence that could reasonably be expected to have been available at the time.”
“If rent of comparable premises had been agreed on the day after the relevant date, I cannot see that such an agreement would be of no relevance whatever to what the market rent was at the relevant date itself. If the lapse of time before the agreement for comparable premises becomes greater then, as the arbitrator said, the evidence will become progressively unreliable as evidence of rental values at the relevant date. The same is no doubt true of rents agreed some time before the relevant date; but nobody suggested to me that those should be excluded….”
“The clear acceptance in Melwood of the potential relevance of post valuation date transactions has not in our judgment been rendered of no application in claims for compensation under the 1961 Act by the recent insertion of section 5A”
“… evidence of a post valuation event may be relied on to establish an objective fact as at the valuation date. Thus, a comparable may provide evidence of what the hypothetical vendor and purchaser will in fact have agreed. That an actual vendor and an actual purchaser have agreed a price on a property that is comparable with the reference property is undoubtedly capable of constituting evidence of what would have been agreed in the hypothetical transaction for the reference property itself. It is this evidential function that was accepted in Melwood… Of course the degree to which a comparable transaction will assist in determining the price of the reference property will depend on how similar the factors that are material to the valuation were at, respectively, the date of the transaction and the date of valuation and on whether adjustments can satisfactorily made for such differences as there were…”
“There is no single accepted practice for measurement of residential property for valuation purposes… If reference to property area is required then the alternative approaches are [gross external area], [gross internal area], [net sales area] or [effective floor area] The basis of those areas should be stated in the valuer’s report.”
“Expert witnesses would not generally be expected to… include comments that are in the nature of advocacy submissions about an opposing expert’s evidence. You may find yourself at greater risk of slipping into ‘advocacy mode’ at the rebuttal stage of presentation of evidence, when the focus of your evidence shifts from explanation of your own opinion to a more critical role in dealing with the expert witness report of your counterpart.”