The industry had its beginnings in the post World War II era, when the huge demand for housing for returning GI’s overwhelmed the construction industry’s ability to deliver. Pre-fabricated modular housing was developed as a solution to this demand. Other countries with severe commercial building needs following the war also developed simplistic modular construction techniques. In the following decades, technological advances have increased the quality of those initial efforts, as well as opened the door to new applications of modular construction.