In land resumption, what do you do in the case where only part of the land is subject to compulsory acquisition? For example, the widening of a road may only require part of the land to be resumed and the owners can still remain in their house, but with a reduced land area. Is it then fair to only pay market value for the proportion of the land which is resumed? Or should the owners be entitled to more compensation (proportionally) than if the whole house was subject to resumption?

An associated scenario is easement creation. The land isn’t bought, but rather the right to install utilities in the land is acquired. This reduces the land use to the owner and hence its value, and so the owner must be compensated somehow.