Despite several studies suggesting the strategic and competitive advantages that organisations could gain through Information Technology (IT)-enabled strategies; there is no precisely defined model for evaluating IT business value (ITBV). Attempts to quantify ITBV have led to inconsistencies and paradoxes. Some of these equivocal results are attributed to the lack of theoretically structured framework in the previous studies. This paper presents a methodology for evaluating the ITBV in construction industry by adopting three paradigms of process-based view, microeconomics-based view, and resource-based view as the theoretical framework to model the relationship between IT and the performance of engineering and construction firms. The ITBV is modelled using a non parametric technique known as data envelopment analysis (DEA). DEA identifies the surface that represents the most efficient data points in terms of maximum output produced using minimum input. The output variables are parameters that measure the project performance of the organisations, while the input variables measure the level of usage of IT and organisational complimentary resources. An empirical test of the model is illustrated, thereby eliminating some of the difficulties associated with parametric approach to evaluating ITBV. © 2010 Faculty of Construction and Land Use, The Hong Kong Polytechnic University.