This standard of measurement is intended for application to buildings containing retail types of occupancies. Methodologies defined are relevant to both new and existing buildings, comprised of single or multiple stories that may be leased to one or multiple tenants. Although references are made to a development parcel this standard is not intended for application to site improvements other than buildings. The uniformity of the measurement of retail area established by this standard not only serves the interests of property owners, managers and tenants but also, because they are succinctly defined, may appeal to others like facility managers, brokers, and appraisers.