Bay Area Seismic Engineering and Construction | San Francisco Bay Area BASEC is an established engineering and construction firm with headquarters in Oakland, California. BASEC provides complete in-house solutions from design to construction. BASEC was selected as the principle investigator by the state of California Seismic Safety Commission after the Northridge earthquake to make code change recommendations for URM Buildings. Basecearthquake.com~Site InfoWhoisTrace RouteRBL Check