Abstract: A method of optimizing computer-implemented building design, includes the following: defining one or more options for each building component; providing an energy use intensity versus cost optimization value for each option for a plurality of metrics; selecting a subset of the plurality of metrics applicable to each option; defining a metric vector for each metric through connecting the energy use intensity versus cost optimization value for each option; arranging each metric vector on a coordinate grid with an equal angle between each metric vector; constructing a two-dimensional polygon on an XY-plane by interconnecting for all the metric vectors the energy use intensity versus cost optimization value for each option; providing a performance value for each option for each metric vector based on a percentage the metric vector the associated option represents; and representing a fitness factor for each option as a function of each of the plurality of metrics.