This thesis develops a parametric design framework that accelerates seismic assessment and retrofit design for vulnerable reinforced concrete buildings in Türkiye, while integrating recycled construction and demolition (C&D) waste as a structural resource. It addresses the gap between slow, building-by-building retrofit practices and the large volumes of concrete and brick rubble typically landfilled during urban transformation. The novelty lies in a dual-track system that couples a structural assessment workflow with a material recovery process within one parametric framework, closing the loop between retrofit demand and locally sourced material supply.

Methodologically, survey-based building data feeds a Grasshopper model that directly generates geometry, calculates seismic loads, and performs Karamba3D structural analysis against Turkish and European codes, while recycled aggregates are processed into modular retrofit components such as column jackets and shear walls. A case study confirmed that, even under conservative material assumptions, the resulting retrofit achieves sufficient capacity gains, demonstrating a faster, typology-based, resource-aware retrofit workflow for rapid vulnerability screening.