Question to the HM Treasury:

To ask the Chancellor of the Exchequer, how the Valuation Office Agency obtains data on plot sizes of the (a) curtilage and (b) square area of a dwelling.

The VOA refers to scaled plans and maps when determining the plot size or ‘curtilage’ of a dwelling.

The square area of a dwelling may be calculated by direct measurement of the actual property. The VOA will also use scaled plans and may refer to the dimensions of a ‘house type’ when dealing with new housing developments, which comprise multiple dwellings of the same design.