Property calculation is the process of determining the value of a property. It involves measuring the AREA of the property, calculating the value of the land and buildings, and taking into account any other factors that may affect the value. The term AREA in this context refers to the total AREA of the property, which is usually measured in square feet or meters. Property calculation is an important part of the real estate industry, as it helps to determine the value of a property for sale or rent.