Deployment of a computer program including a global NOI audit model together with standards, procedures, documentation, and reporting requirements in interactive, digital form to a plurality of audit firms operating independently of each other and having a reporting relationship with an investment entity. The program is adapted for receiving audit data from a respective audit firm in connection with an associated real estate property and for generating an associated respective Current NOI audit report. The specific fields and screen arrangements, together with interactive instructions and definitions of the program require that each audit firm identify a consistent set of input parameters and apply them in a consistent way, as driven by the global audit model, thereby assuring computation and transmission of structurally consistent Current NOI audit reports to the investment entity, wherein the Current NOI calculations have been developed by substantially identical audit practices, procedures and assumptions. Using the same program, the investment entity then calculates and stores an Underwriting NOI set of values corresponding to each Current NOI report for the purpose of investment evaluation. The program generates a consolidated report of both Current and Underwriting NOI values for all of the plurality of audit firms so that the investment entity can effect a uniform analysis of all investment properties under consideration.