Large construction projects in India often fail due to a lack of understanding of scope, time, cost, and quality. This study focuses on how the cost element influences project success when all other factors are considered. By analyzing project accounts and applying benchmarking, the research aims to clarify the meaning of project success and improve project management practices. The findings emphasize the importance of considering cost factors and contract conditions to drive strategic cost decisions and enhance project profitability for both project owners and contractors.