Quandel was established in 1882 in Minersville, Schuylkill County, Pennsylvania, and is presently under the leadership of fifth-generation management. Our services include construction management, general construction, design-build services, engineering, and development. In addition to our corporate headquarters in Harrisburg, Pennsylvania, we also have offices in Minersville, Wormleysburg, Pottsville, Scranton, Hershey, and Bethlehem, Pennsylvania, and Abingdon, Maryland.