The management of Construction Supply Chain has a profound effect on profitability and project expectations in terms of cost, time, and quality and risk reduction. Large numbers of suppliers involved in project delivery and complexities of business processes have also necessitated the studying of Construction Supply chain management systems in the Construction Industry. However, there is limited research on the construction supply chain in Nigeria. To address this, a questionnaire survey was conducted in Lagos State to identify construction supply chain management systems in use. In total, 100 questionnaires were administered randomly to selected medium and large-sized firms with a response rate of 54%. The data was analysed using frequency distribution and Relative Importance Index. From the analysis of results, personal relationship was revealed as the most commonly used systems with 63.0%. It was also found that, 42.6% of respondents are discouraged by lack of trust for suppliers and that long-term relationship between contractor and supplier is the most likely systems of improving contractors-suppliers relationships.