To limit the probability that the energy model calculation method will not accurately and appropriately account for the gross wall area and area of fenestration and doors in a manner that is consistent with the basis of the prescriptive requirements, which could lead to the energy model calculations not conforming to the energy performance level of the reference house, which could lead to overestimation of the building energy target, which could lead to excessive use of energy, which could lead to an unacceptable effect on the environment.