Abstract

The construction industry is pivotal for driving economic growth and infrastructure development in Nigeria. However, the sector has long struggled with quality issues such as structural defects, substandard materials, and poor workmanship, which lead to building failures, safety hazards, and economic losses. To address these challenges, a robust quality assurance (QA) framework encompassing the entire construction lifecycle is essential. This article provides a comprehensive analysis of the current state of QA practices in the Nigerian building sector, identifying key challenges and proposing strategies for improvement. It examines the roles of regulatory bodies, including the Standard Organization of Nigeria (SON), the Council for the Regulation of Engineering in Nigeria (COREN), and the Nigerian Building and Road Research Institute (NBRRI), in establishing standards, enforcing compliance, and promoting best practices. Additionally, the article explores various quality assurance models, such as ISO 9001, Six Sigma, Lean Construction, and Total Quality Management (TQM), evaluating their suitability for the Nigerian context. Furthermore, it outlines a framework for implementing an effective QA system that includes policy and regulation, institutional capacity building, construction approval processes, post-construction maintenance, and stakeholder participation. By addressing the shortcomings in the existing QA framework and adopting a collaborative approach involving all stakeholders, the Nigerian construction industry can enhance quality, ensure public safety, and bolster its economic competitiveness