Prefabricated Buildings and Quality Since the prefabricated building takes place in a controlled manufacturing environment and follows the specified conditions and standards, the subassemblies of the building will be built in a uniform quality. Structures built on the job site depend on varying skill levels and the programs of independent contractors. All of this contributes to the craftsmanship and overall quality of the given structure. With prefabrication, each subassembly is done by an experienced team with multiple quality controls throughout the entire process in a weatherproof factory. Some components of the building have been built using precision machinery equipment to more..