Abstract
Abstract: Despite the widespread integration of advanced technologies in construction projects, the construction sector's efficiency remains low, with persistent challenges related to waste, delays, resource use, and implementation. The objectives of the study are: (1) map research growth and productivity, (2) identify leading authors, Journals, and countries, and influential publications, and (3) reveal the conceptual structure and its evolution—particularly adoption-related constructs (factors, enablers, drivers, barriers, and critical success factors)—through integrated scientometric evidence. This research covers agile and lean construction research from 2005 to October 2025. The study adopted Bibliometrix in R and VOSviewer to analyze Scopus, WoS, and a merged de-duplicated dataset. Analysis revealed a clear dominance of lean construction research over agile project management, with the United States, the United Kingdom, and China emerging as the most significant contributors. Keyword co-occurrence indicates thematic linkages among project management, BIM, lean production, sustainability, and implementation-related issues, suggesting a shift toward a research agenda connecting process improvement, digitalization, sustainability, and adoption challenges. The merged database of 411 documents provided a broader view of lean and agile research. and reduced single-database bias. From a Sustainable Development Goals (SDGs) perspective, the findings are mainly associated with SDG 9 through innovation, infrastructure, and BIM-enabled digitalization, and with SDG 12 through resource efficiency, waste reduction, and responsible production. These SDG links are interpreted as literature-based thematic associations rather than direct empirical evidence of SDG achievement. The study provides a unified reference and highlights underexplored areas, particularly Lean–Agile integration, agile adoption in construction, and sustainability-oriented implementation pathways.