The primary difference is the method by which the home is built and assembled—which often leads to significant differences in cost and timelines. A prefabricated home is built in panels in a climate-controlled warehouse and shipped to the build location, where final assembly occurs on-site. Because most of the build takes place in a controlled environment, costs are more predictable, weather delays are not a factor, and construction typically moves faster. Contrary to popular belief, prefab construction does not mean lower quality. The same materials and techniques are used in both prefab and on-site builds. Once assembled on your property, your prefab home will have the same durability and longevity as any other home. An on-site build, on the other hand, is completed entirely at your property from start to finish. While on-site builds may give you greater visibility into the project and process, they also involve more variables, as weather, local material availability, and costs can significantly impact your build.