Helping Build the Future from the Ground Up
JSA has been one of South Dakota’s leading Civil Engineering and Land Surveying Firms since 1984. Conveniently located in Sioux Falls, we serve the surrounding area from southwest Minnesota to northwest Iowa.
JSA builds future communities for where we live and work. If you need long term engineering services or surveys that enhance productivity and provide accurate data, the team at JSA is composed of skilled engineers, land surveyors, and AutoCAD technicians that always provide more than the expected. Learn More.