A modular building is one that is built in a factory away from the site on which it eventually sits. Constructed in sections called modules, it is then shipped to its site on flatbed trucks and assembled there.
Modular buildings are used as homes, offices, schools and hospitals. Some are used as permanent buildings, while others can be relocated when necessary.
Modular, or prefabricated, buildings differ from mobile homes in that they must meet federal codes enacted by the Department of Housing and Urban Development. Modular buildings generally require less time to build than traditional buildings since fabrication takes place indoors, and they generate less waste during the process, making them a greener option.