Optimization of Quality Performance in Building Projects Through Lean Construction Practices

This paper examined reported evidence on Lean Construction practices and quality performance in selected residential building projects. The source report describes 100 respondents and a 40-item questionnaire with Cronbach’s alpha of 0.976. It reports a strong positive Lean–Quality correlation (r = 0.852, p < 0.01) and a regression R² of 0.785. LPS (β = 0.641) and JIT (β = 0.261) are identified as the more influential reported predictors, while VM was not statistically significant as a direct predictor. Descriptive findings show comparatively high ratings for early defect identification and timely corrective action, but a lower score for final client/statutory compliance (mean = 3.68). Value engineering at planning/design has the lowest selected implementation mean (3.65), making it a practical area for improvement. Overall, stronger planning reliability, work-readiness controls, material-flow coordination, early value engineering, workforce training, and final-stage documentation are recommended. Further publication should include the complete regression output, raw-data reproducibility details, and formal diagnostics. The study supports a strong association between Lean practices and quality outcomes, while causal claims require longitudinal or experimental evidence.

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