Webinar Synopsis: This webinar centers on mass‑based carbon assessments—the greatest early‑stage leverage. Participants will learn to set initial carbon budgets, evaluate design choices, and compare scenarios with confidence. The session covers: CarbonSpace (a carbon assessment platform for the built environment) and why mass‑based thinking matters; creating very early‑stage assessments before BIM or material libraries; understanding how structure, façade types and geometry d