Avant-Garde Construction Enterprise is a seismic retrofit specialist serving homeowners and small apartment owners across the Greater San Francisco Bay Area. We inspect, design, and correct seismic retrofits so your home actually performs the way you think it will. After 20+ years in the field, we have yet to see a single “approved” retrofit fully comply with code and best practices. We provide independent crawl space inspections, written reports, and corrective retrofit work focused on real safety, not just paperwork.