Exploring the potential of lean sustainable construction 4.0: a reflexive analysis

The construction industry faces a fundamental crisis due to historically low productivity and its significant contribution to carbon emissions and waste. To address these critical issues across environmental, economic, and social dimensions, this research utilizes a reflexive analysis and philosophical synthesis of the intersection of Lean Construction (LC), Construction 4.0, and Sustainable Construction, resulting in the emerging framework “Lean Sustainable Construction 4.0” (LSC4.0). The aim is to clarify the conceptual and philosophical feasibility of this integration. The main contribution demonstrates that Lean Construction and Sustainable Construction are not opposing domains but are instead mutually enhanced by the intelligence of Construction 4.0, which acts as the epistemological tool for quantifying and predicting value and ecological impact. The discussion emphasizes conceptual synergy, the ontological and epistemological implications (redefining the built object as a cyber-physical system), the challenges in establishing LSC4.0, and the future research directions (maturity models and ethical frameworks) to support the comprehensive transformation of the sector.