TY - CONF TI - Evaluation categories to measure the lean adoption for organizations C1 - Singapore, Singapore C3 - Proceedings of the 34th Annual Conference of the International Group for Lean Construction (IGLC 34) SP - 1145 EP - 1155 PY - 2026 DO - 10.24928/2026/0221 AU - Hirata, Nozomi James AU - Leicht, Robert AU - Messner, John AD - PhD Candidate, Department of Architectural Engineering, The Pennsylvania State University, University Park, PA, USA, njh5734@psu.edu, orcid.org/0009-0006-7121-2838 AD - Professor, Department of Architectural Engineering, The Pennsylvania State University, University Park, PA, USA, rml167@psu.edu, orcid.org/0000-0001-6705-8141 AD - Charles and Elinor Matts Professor, Department of Architectural Engineering, Director, Computer Integrated Construction (CIC) Research Group, The Pennsylvania State University, University Park, PA, USA, jim101@psu.edu, orcid.org/0000-0002-7957-1628 ED - Hamzeh, Farook ED - Poshdar, Mani ED - Garcia-Lopez,, Nelly P. AB - There have been several assessment tools developed to evaluate the adoption of lean in construction industry organizations, but there is no generally accepted approach to consistently measure the adoption. Further, the existing models lack structure and use limited reference to the existing models outside of the construction domain. Some models have also excluded the involvement of industry experts in the development and evaluation process. Capability maturity models have been found to be a valuable approach for self-assessment, continuous improvement, and benchmarking. This study aims to formally identify categories for lean organization adoption as a foundational step to create a maturity model to evaluate the lean maturity of an organization. The authors found a total of 214 different categories in the literature and subsequently grouped, removed, and refined them with assistance from lean experts. This analysis yielded a total of 33 potential categories. These categories were then rated by industry experts to determine their inclusion in the maturity model. Future work will include developing a model, validating it, and disseminating the maturity model to the community. KW - Lean construction KW - continuous improvement/Kaizen KW - standardization KW - organization maturity. PB - T2 - Proceedings of the 34th Annual Conference of the International Group for Lean Construction (IGLC 34) DA - 2026/06/22 CY - Singapore, Singapore L1 - http://iglc.net/Papers/Details/2520/pdf L2 - http://iglc.net/Papers/Details/2520 N1 - Export Date: 19 June 2026 DB - IGLC.net DP - IGLC LA - English ER -