The common methods used are:
Share value: the apportionment for each unit is proportionate to a unit’s share value in relation to the total share value for the whole apartment
Average of the strata floor area and share value: the apportionment is according to the unit’s strata floor area in relation to the total strata floor area. The figures derived from the share value method and floor area method are then averaged by taking 50% of each method
General valuation: a value is estimated for a typical unit of each type. This valuation is on an individual market basis, ignoring collective sale potential, floor level, facing etc. The valuation of each typical type of unit would vary according to the floor area of each unit on the basis that the larger the unit, the lower the value per square foot. The apportionment for each unit would then be in proportion to that unit’s value in relation to the total value for the whole development
The combination of general valuation and share value method: a value is estimated for a typical unit of each type as in general valuation, and the total value is computed. This total value is then deducted from the sale price, and the balance is distributed to each unit according to that unit’s share value as a proportion of the total share value for the development.