MANKATO, MINN. — I&S Group announced that 2013 is its 40th year in business. The firm has grown from humble beginnings in the basement of the founder’s home, to more than 125 employees in six offices and three states.

I&S Group was formed in 1973 by Ken Surprenant and Gene Isakson to provide engineering services to southern Minnesota. After Isakson moved on to other opportunities, Ken and his wife, Mary Jo, stayed the course, and over the next 40 years the company has grown to provide a full suite of design services with clients throughout the country.

In January 2012, Kuehl & Payer, Ltd., a firm based out of northern Iowa, merged with I&S Group. The original vision of Ken Surprenant — to provide civil engineering services to the southern Minnesota area — has expanded to providing full architectural, engineering, surveying, and environmental services throughout the United States.

I&S Group, Inc. provides Architecture; Interior Design; Structural, Mechanical, Electrical, and Civil Engineering; Land Surveying; Environmental Services; Landscape Architecture; and Community Resource Planning services.