Improved IT products and services are continually being introduced around the world. However, although an increasingly common approach in many industries, little is known of the characteristics of flexible IT infrastructure associated with its successful construction industry implementation. To rectify this situation, this study aimed to identify the critical success factors (CSFs) involved in the delivery of Information Technology Infrastructure Flexibility (ITIF) to the construction industry. An initial list of 38 potential factors divided into technical, people, and management dimensions and associated elements were identified by literature review and preliminary interviews with seven Malaysian companies representing a variety of construction industry participants and IT experts. This was followed by a main study comprising a questionnaire survey of 211 construction industry practitioners in Malaysia. Eighteen critical factors contributing to successful ITIF delivery are identified. Of these, two CSFs of hybrid skill and willingness to change appear to be unique to the Malaysian construction industry. Further research is recommended to assess the opinions of a wider variety of experienced practitioners to validate the findings and its applicability in the Malaysian context and beyond.