TY - CONF TI - Ecofix- a PyRevit prototype for a Lean and sustainable renovation decision support tool C1 - Singapore, Singapore C3 - Proceedings of the 34th Annual Conference of the International Group for Lean Construction (IGLC 34) SP - 438 EP - 448 PY - 2026 DO - 10.24928/2026/0141 AU - Bharadwaj, Narmada AU - Ramani, Prasanna Venkatesan AU - Ali, Mushrifa AU - Sureshkumar, Saran Somapalli AU - Tumma, Harshitha AD - Masters Student, School of Civil Engineering, VIT University, Vellore, India,narmada.bharadwaj2024@vitstudent.ac.in AD - Associate Professor, School of Civil Engineering, VIT University, Vellore, India, prasanna.venkatesan@vit.ac.in, orcid.org/0000-0002-6924-9520 AD - Doctoral Research Scholar, School of Civil Engineering, VIT University, Vellore, India, mushrifa.ali2023@vitstudent.ac.in, orcid.org/0009-0000-3444-5874 AD - Masters Student, School of Civil Engineering, VIT University, Vellore, India, saran.ss2024@vitstudent.ac.in AD - Masters Student, School of Civil Engineering, VIT University, Vellore, India, tumma.harshitha2024@vitstudent.ac.in ED - Hamzeh, Farook ED - Poshdar, Mani ED - Garcia-Lopez,, Nelly P. AB - Renovation and adaptive reuse offer sustainable alternatives in the construction industry, but are underused due to a lack of integrated decision support tools, which can aid during the design stage. This paper presents Ecofix, a prototype developed using PyRevit, which acts as an integrated sustainable renovation decision support tool inside Autodesk Revit environment. This tool is developed using Python, and it assists designers and engineers to evaluate various retrofit, demolition, demolition with rebuild, retain, and new build scenarios using lean and sustainable design principles. This tool automatically extracts the material and quantity data from Revit, calculates and gives a comparative report for retrofit, demolition, rebuild, reuse, retain and new build. It takes carbon dioxide equivalent, cost, and time required to complete the work based on the quantity selected by the user into account. Ecofix aligns with lean and green by embedding waste-free decision support inside Revit. This tool eliminates lean wastes (information transfer, time, over-processing) by automatically taking Revit quantities and ranking retrofit, demolish, rebuild, and retain options by carbon dioxide equivalent, cost and time. The prototype enables Set-Based Design and material waste elimination through salvage/reuse quantification, prioritising lowest-carbon scenarios while maximising circular economy benefits. KW - Sustainability KW - lean and green KW - set-based design KW - renovation decision support KW - and digitalisation and lean. 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/2462/pdf L2 - http://iglc.net/Papers/Details/2462 N1 - Export Date: 19 June 2026 DB - IGLC.net DP - IGLC LA - English ER -