The purpose of this study is to examine the importance of Contractor Selection Criteria (CSC) for construction projects. This study will cover Lagos and Federal Capital Territory, Abuja, Nigeria. Survey research design was used and the population of the study comprised of public client organisations and construction professionals. Stratified random sampling technique was used and data were collected using questionnaires. A total of 373 questionnaires were distributed using Cochran formula to generate the sample size. From the sample size calculated, 313 were from consulting firms and 60 from public clients’ organization. 290 questionnaires were retrieved and used for the analysis. It gives a response rate of 78%. Statistical Package for Social Science (SPSS) 21st version was used to analyse the data using frequency, percentage, relative importance index (RII) and t-test. The study showed that balance sheet statement, technical skills, past performance, provision of health and safety regulation and capacity of work handled were the most importance Contractor Prequalification Criteria (CPC). Record of past projects, capability of financial standing and consistency of rates were the significant Tender Evaluation Criteria (TEC). In conclusion, selection of competent contractor for construction projects must be based on “multi – criteria and not solely on “mono-criterion (price)”.
Key Words: Construction projects, Contractor selection, Multi–criteria, Prequalification, Tendering