Millhouse J. next dealt with the question of damages for severance and this he assessed at £48,016. He found, and the fact is not questioned, that it was essential to the plaintiff that it should continue to carry on its business on its existing site close to the retail shops with which it does much of its trade, and that the space left to it in that part of the building which it retained is insufficient to enable it to conduct its business as efficiently and profitably as it did before the resumption. The amount of £48,016 fixed by his Honour was arrived at by allowing the cost of constructing a new western wall to the building along the western boundary of the land retained, together with the cost of reinstating in the part of the building retained office and lavatory accommodation which had previously been in the resumed area and of making the necessary alterations to the water and electricity services, and the cost of various temporary structures necessary to enable these works to be done. It has not been suggested that the figure of £48,016 thus arrived at was not an amount proper to be included in the award of compensation but, at the trial and before us, it was contended on behalf of the plaintiff that a further sum should be included to make good damage to the plaintiff resulting from the fact that, as a result of the resumption, it had been deprived of 12,000 square feet of floor space. In support of this claim, evidence was led that consideration had been given by the plaintiff to plans to add two additional floors on the three-storied part of the building at its eastern end which would provide 20,000 square feet of floor space. It appeared that, by arrangement between the parties, plans had been prepared and tenders had been called in 1959 for doing that work and that the amount of the lowest tender was £126,033. The evidence was that to build additional floors to provide only 12,000 square feet of space would not be practicable since it would necessitate extensive alterations of the lower floors to carry the new floors. Accordingly the case for the plaintiff proceeded upon the basis that the percentage of the total cost of £126,033 which would represent the cost of providing 12,000 square feet of space would be 61.7%. The resultant figure would be £77,762. To that would have to be added 8⅔% representing the increase in the cost of building between the date of the tender and the date of trial, and to this again would have to be added 6% representing architect's fees, making the total estimated cost of providing 12,000 square feet of additional space £89,269. These figures and calculations were not disputed by counsel for the defendant. This part of the plaintiff's claim was rejected on the ground that no final decision had been made by the plaintiff to build the additional floors but, with all respect to his Honour, that was not a relevant fact in considering this issue. The plaintiff's claim was that it was entitled to have included in the compensation to be paid to it the amount required to make good the damage it had sustained by the diminution of its original floor space and that evidence of the cost of providing an equivalent area on the land retained provided a method whereby the amount of that damage might be assessed. Before us counsel for the defendant did not seek to support the reason which led his Honour to rule against this part of the plaintiff's claim. His submission was that it should not be allowed because it would mean that the plaintiff would be compensated twice for the same loss because this part of its claim was already covered by the amount of £35,500 awarded as being the value of the portion of the building on the land resumed. We would have been disposed to think that this submission would have been correct if the value placed by Mr. Shuttleworth upon the part of the building on the land resumed had been based upon replacement cost, although it may be that this does not follow. For example, in the Adelaide Fruit and Produce Exchange Company Case [1] it appeared that, in determining the value of the land resumed, the cost of replacement of the improvements on it, or some of them, had been taken into account. The learned trial judge had then awarded the plaintiff a further sum representing the cost of replacing those improvements upon the land retained. On appeal to this Court it was contended on behalf of the resuming authority that the plaintiff was recovering double compensation for the same loss, but the answer given by the Court was that "If, as it seems, the improvements upon the land retained were valued at a figure that would cover replacement cost, it may be that in the result the Company in receiving both replacement cost and the cost of replacing improvements upon the land retained will obtain an advantage, but if it be so this is the accidental consequence of the acceptance of the way in which the buildings were valued and the possibility affords no reason for denying the Company the damages for severance that the evidence and his Honour's findings thereon warrant" [2] . It should be mentioned that in this passage an error has crept in and that the words "land retained" where first used should read "land resumed". It is, however, unnecessary in the present case to consider what would have been the position had the value of the improvements on the land resumed been based upon replacement cost since this was not the case. In these circumstances his Honour rightly allowed, as part of the compensation, an amount representing the cost of building a new western wall on the land retained and of reinstating there the lavatories and office accommodation which had been in the part of the building which stood upon the land resumed, and this is not disputed. He should, however, have also taken into account, as part of the plaintiff's loss, the diminution of floor space caused by the resumption, and that unless replaced this loss of space would necessarily interfere with the conduct by it of its business. To take the cost of replacing on the land retained the floor space lost by the resumption seems to us, in all the circumstances, to provide a reasonable method whereby to measure the compensation payable for that loss, but in doing so the value placed upon the portion of the building on the land resumed must be deducted, otherwise the plaintiff, at the defendant's expense, would be able to provide upon the land retained the same accommodation as it had before the resumption and in addition have the £35,500 representing the value of the portion of the building which stood upon the land resumed. In the result, therefore, it is entitled, as part of its compensation, to £101,785, that figure being arrived at by adding together £48,016 and £89,269 and subtracting £35,500.