Means of appraising a building by simply multiplying its square foot cost by the total amount of square feet in the structure being evaluated. Two or more buildings may then be compared by analyzing their total square foot costs.

With regard to appraisal; it is the use of exterior dimensions when comparing the cost to build a similar structure or improvement of the same quality.

A valuation method based upon the total area of the structure in square feet. This method involves determining the ground floor area, taking into account construction grade and quality, type of dwelling (ranch, colonial, etc.), and the kind of construction material in use. Once determined, the base replacement cost can be calculated, additional features added, location modifiers applied, and a final valuation determined.