San Jose, CA Earthquake Safety: Non-Ductile Concrete Retrofit (2026)

Non-ductile concrete buildings (pre-1980 reinforced concrete frames lacking modern seismic detailing) collapse catastrophically in major earthquakes, as seen in Northridge 1994. Cities like Los Angeles and West Hollywood have adopted mandatory retrofit ordinances; San Jose has not, citing a smaller inventory and reliance on voluntary upgrades. California AB-2681 (2018) requires cities to inventory potentially vulnerable buildings, and San Jose's Office of Emergency Management cooperates with Cal OES on data collection. Building owners are encouraged to commission a Tier 1 ASCE 41-17 evaluation, particularly for concrete-frame structures over three stories built before 1980. Retrofits typically include shotcrete shear walls, fiber-reinforced polymer wraps, or steel bracing.