MissouriCRE S.M. Wilson building addition to Missouri primary school July 29, 2019 Share on Facebook Share on Twitter Share on LinkedIn Share via email S.M. Wilson & Co. has broken ground on Hallsville R-IV School District’s primary school addition and renovation project in Hallsville, Missouri. S.M. Wilson is serving as the construction manager for the 31,000-square-foot addition to the school. The project includes an eight-classroom second-grade addition, new gymnasium and storm shelter. Construction will be complete by the start of the 2020 school year. Klingner & Associates is the architect.