CSM Construction and Restoration services St. Louis, Illinois and Lake Ozark. We are a “Go anywhere, anytime company” with experience dealing with a variety of local regulations, agencies, and cultures. We serve a diverse array of clients, large and small. Our management has over 150 years of combined experience in emergency service, disaster restoration, mold remediation, consulting, engineering and general contracting. We are a full-service company. We are often found at the scene of today’s headlines. After the media and cameras have gone home, CSM is busy putting lives and communities back together.