Tally

Tally LCA (now called tallyLCA) is a Life Cycle Assessment application that integrates directly into Autodesk Revit, enabling architects and engineers to calculate environmental impacts of building material selections in real-time during the design process. Originally developed by KieranTimberlake and now managed by Building Transparency, Tally allows users to conduct whole-building LCA assessments by automatically extracting material quantities from BIM models. The tool evaluates multiple environmental impact categories and enables comparative analysis of different design options to support certification requirements and carbon reduction strategies.