Coastal Georgia is frequently affected by natural disasters, including hurricanes and floods. Hurricane Helene revealed the vulnerability of coastal built infrastructure systems. Despite many buildings remaining physically intact during this storm, building systems experienced severe functionality loss due to prolonged service disruptions of essential utility systems, including water losses and power outages. This study assesses residential building systems functionality by connecting the physical performance of buildings with utility outages. The physical performance of residential buildings and infrastructure systems is modeled using the HAZUS model. Water and electrical power infrastructure systems recovery is then modeled by incorporating current infrastructure decision-making practices, and building functionality recovery is modeled through housing-level recovery. The proposed model is tailored and applied to Chatham County, Georgia, for a hurricane disaster scenario. The proposed model will benefit resilience-focused urban disaster risk planning and decision-making.
