Comparative Analysis of Construction Project Outcomes: Supervised Vs. Unsupervised Execution
Abstract
This study presents a comparative analysis of construction project outcomes under supervised and unsupervised execution in Anambra State, Nigeria. Using a quantitative and qualitative research approach, data were collected from 194 fully registered construction professionals to evaluate key performance indicators such as project quality, cost efficiency, time management, and safety compliance. The findings reveal that supervised projects consistently outperform unsupervised ones, with higher adherence to engineering standards, better budget discipline, timely completion, and improved safety compliance. In contrast, unsupervised projects exhibited substandard workmanship, frequent cost overruns, delays, and increased safety violations. The study underscores the importance of supervision in ensuring successful project execution and recommends mandatory supervision policies, stronger regulatory frameworks, professional training programs, and digital monitoring technologies to enhance construction outcomes in Nigeria. These findings contribute to the growing discourse on construction project management and the need for stricter oversight in the Nigerian building industry.
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